Brake System (WABCO ABS) General Description .................................................... Components ................................................. Dignosis ........................................................ On-Vehicle Inspection And Adjustment ....... Specifications ............................................... Rear Brake Assembly BR -3 BR -14 BR -16 BR -20 BR -22 Vacuum Assisted Hydraulic Brake Brake Pedal Components ............................................ Removal ...............
000F ........................................................ 0010 ........................................................ 0011 ........................................................ 0017 ........................................................ 0018 ........................................................ 0019 ........................................................ 001A ........................................................ 001B ........................................................ 001C ...........
General DESCRIPTION BRAKE SYSTEM The service brakes are internally expanding type hydraulic brakes acting on all wheels. The brakes for the front wheels are 2-leading type and those for the rear wheels are duo-servo or dual 2-leading type. diaphragm pushes the push rod as it moves from right to left. The push rod thus pushes the master cylinder piston, generating high fluid pressure from low pedal depression force. The brake booster gives faster hydraulic pressure buildup.
SUDBR9017L 2. When fluid leaks are caused in front brake system In this case, depression of the brake pedal to push the push rod does not develop hydraulic pressure as the brake fluid leaks from the front brake system. Therefore, the primary piston compresses the primary return spring and the retainer pushes the secondary piston, which then pressurizes brake fluid in space between the secondary piston and cylinder body, thus generating hydraulic pressure in the rear brake system only.
Rear Wheel Brake Dual 2-leading Brake Wheel Cylinder The wheel cylinders are installed at front and rear and the pistons extend in both upward and downward directions to push the shoes from both directions. The shoes are held down to the backing plate by shoe hold down pins and the return springs mounted on the shoes causing contraction of the shoe and wheel cylinder piston when the brake is released. During both forward and reverse operation of the vehicle, the shoes work as leading shoes.
2. Dual 2-leading type : rear brake EMTBR5009A Brake Fluid Level Sensor The brake fluid level sensor installed in the brake fluid tank senses the brake fluid level in the tank. When the fluid level drops to a preset level, the sensor operates to turn on the warning lamp in the cluster to warn low brake fluid level.
Exhaust Brake SUDBRA015L The exhaust brake system, as an assistant function of the service brake, comprises of the exhaust brake device installed at the middle portion of the exhaust pipe and the intake shutter installed at the intake manipulate to reduce the intake air noise. When the exhaust brake device close the butterfly valve, the pressure inside of the pipe increases. This increased pressure influences to the piston to get the braking force. At that time, the intake shutter is also closed.
2. At releasing Intake Shutter When the exhaust brake is operating, the intake shutter(A) reduces the amount of the intake air through the intake manipulate so as that the exhaust pressure is operated to the piston effectively. As a result, the noise will be reduced and the brake will be more effective. If the exhaust brake switch, the clutch switch and the accelerator switch are OFF, the 3-way magnetic valve closes the circuit to the vacuum tank and opens the atmosphere circuit.
2. At releasing If the exhaust brake switch is OFF, the electric current flowing through the coil is shut down. Due to the spring tension, the plunger will be pushed so as to close the way to vacuum tank while the way to the atmosphere pressure and the brake chamber.
LOAD SENSING PROPORTIONING VALVE SUDBRA021L 1. LSPV assembly 2. Bleeder screw 3. Bracket 4. Lever assembly 5. Sensor spring 6. Spring guide 7. Adjusting nut 8. Operating lever 9.
Construction LSPV is consist of sensor part and pressure controller part. 1. Sensor part It consists of spring, operating lever, link. It senses the height of vehicle with varying according to the amount loads 2. Pressure controller part It consists of valve stem mechanism for proportioning control of sensor force. SUDBR9036L Service and Inspection of the LSPV Check the LSPV as below when replace the sensor spring, valve body assembly or reinstall the rear axle, rear spring.
PARKING BRAKE GENERAL SUDBRA022L 1. Parking brake lever assembly 2. Cam lever 3. Parking brake drum 4. Adjusting nut 5. Parking brake cable The parking brake installed behind the transmission is an internal expansion type acting on the propeller shaft. It controls propeller shaft rotation to work as a parking brake. The control is wire mechanical type; brake shoes are pressed via a wire to control the propeller shaft.
Parking Brake Proper When the lever at the driver's seat is pulled, the cam lever is actuated via a wire cable and resultant cam rotation causes the brake shoes to expand and be forced against the brake drum. The braking force is thus obtained by friction between the shoes and drum. When the lever is released, the cam lever returns to the initial position and the braking force is released by the brake shoe return springs.
COMPONENTS(LHD) SUDBRA001L 1. Vacuum tank 2. Vacuum hose 3. Brake booster 4. Master cylinder 5. Reservoir tank 6. A.B.
COMPONENTS(RHD) SUDBRA002L 1. Brake booster 2. Master cylinder 3. Brake pedal 4. Parking brake lever 5. Vacuum tank 6. Exhaust brake 7.
Diagnosis Symptom Causes Remedy Remark Irregular Braking The air pressures of tire are different. Adjust the air pressure of tire. Force The sizes of the right and left tires are different Replace the tire. . The adjustment of the wheel bearing is defectiAdjust (Check the wheel bearing) ve. The sizes of the right and left wheel bases are Check and adjust the loosening the U-bdifferent. olt or damages on center bolt. The wheel alignment is defective.
Symptom Causes Remedy Low Braking Fo- The clearance between the brake pedal and flRefer to the item for decreasing the clearce oor is 45mm or more. (at Pressure-600mmHg, rance between the brake pedal and floor. Pressure 50kg) The lining contact is defective. Adjust with being installed not being disassembled. (Temperature should be 100 °C or less) The surface of the lining is contaminated by th- If it is contaminated by oil or grease, thee oil, grease or water. n replace it.
Symptom Causes Remedy Remark The drum is ove- The outlet of the brake master cylinder is clog- If the booster operating rod is not properrheated. ged. ly adjusted, adjust the pedal clearance of the rod clevis to 10~15mm. The brake does not return. Check the burst of the return spring, the bearing lubricant, the stop lamp switch adjustment. If needed, adjust. The booster is defective. Replace The vertical surface of the back plate is scratc- If the surface is too rough, replace. hed.
Symptom Causes Brake makes n- Brake shoe contacting is defective. oises. Remedy Adjust the lining with being installed not being disassembled (Temperature should be 100°C or less) Lining is deformed. Replace the lining. Replace the drum if it has hardened surface. Drum has hardened surface. Replace. Shoe is deformed. Replace. Back plate is deformed or installed improperly. Replace or adjust Front bearing is loosened.
Diagnosis (Parking brake) Symptom Causes Remedy Remark Parking brake d- Operating When pulling the parking brake wi- Adjust the shoe clearance and cable. oes not work. mechanis- th 30kg, there is no lever stroke clm has a p- earance and shoe clearance. roblem. The locking status between the le- Adjust the Ratchet pull lock status. Replver lock latch and Ratchet pull is i- ace it mproper. Wire is broken or elongated. Replace the cable.
3. Step on the brake pedal several times. Pressing the brake pedal at half, loosen the air bleeder screw to evacuate the air with the brake oil. And then, pressing the pedal until it reaches to the floor, tighten the air bleeder screw. Release the pedal. There procedures should be repeated until any air bubble is not shown in the brake oil. KMTBR5519A 4. Tighten the bleeder screw Tightening Torque for the bleeder Screw Front: 6.9~8.8Nm(0.7~0.9kgf.m, 5.1~6.5lb-ft) Rear : 6.9~8.8Nm(0.7~0.9kgf.m, 5.1~6.
Specifications Front Wheel Brake (Drum Type) Item Specifications Brake type 2-leading Brake Wheel cylinder Inner diameter 31.75mm Brake drum Inner diameter 320mm Brake lining Width x Thickness (mm) 85 x 10(Standard), 110 x 11(Option in case of HD72,78) Front wheel Brake (Disk Type) Item Specifications Cylinder diameter Ø 76 mm Effective radius 118 mm Disk outer diameter Ø 304 mm Disk inner diameter Ø 164 mm Pad thickness 12.5 mm Pad effective thickness 10.
Exhaust Brake Item Specification Control System Combination of Electric and Vacuum Type Exhaust Brake Valve Type Butterfly Valve Exhaust Brake Cham- Diaphragm Effective Diameter ber With Installing Spring Tension N(kg) Rod Tensile Force 76.2mm 90~110 (9.18~11.22) 142.1(14.5): Vacuum Pressure-400mmHg Spring Tension 125~153 (12.78~15.62) Rod Tensile Force 103(10.
SERVICE STANDARDS Description Brake pedal Nominal value, mm (Basic diameter in [ ]) Limit Correction and (mm) remarks Bushing to collar clearance [16]0.02 to 0.26 Brake pedal play 3-8 Adjust Stop lamp switch installation clearance 0 to 1 Replace Brake Primary and secondary piston to cylinder body clearance master cylinder Primary retainer assembly Free length Secondary spring deterioratio- Free length n Front Brake drum drum bBrake lining rake Return spring 0.038 ~ 0.145 0.
Description Nominal value, mm (Basic diameter in [ ]) Exhau- Power chamber air tightness [15 seconds after applicatio- -63 kPa (-475 mmHg) or st brak- n of -67 kPa (-500 mmHg) negative pressure] more e Valve to body clearance when butterfly valve is fully clos- 0.1 to 0.
SERVICE STANDARDS (Parking brake) Description Brake drum I.D. Nominal value, mm (Basic diameter in [ ]) Limit (mm) Correction and remarks 180 181 190 192 Correct to limit, replace when limit is reached. 230 232 Squareness 0.05 or less Concentricity 0.1 or less Cylindricity 0.1 or less Static rotation imbalance 0.49 N.cm(50 gf.cm) or less Brake lining thickness Model with M2S5 T/M 10 ~ 11 Brake shoe clearance Model with M2S5 T/M 0.25 to 0.
Vacuum Assisted Hydraulic Brake Brake Pedal Component SUDBRA003L 1. Clevis pin 2. Hose connector 3. Grommet 4. Master cylinder 5. Booster 6. Pedal assembly 7.
Removal 1. Loosen the steering column assembly mounting bolt. Pull down the steering column. 2. Loosen the bolt(A), Remove the instrument panel(B). KMTBR5527A 2. Install the brake light switch. 3. Install the booster and the master cylinder. KMTBR5003A 3. Remove the master cylinder (Refer to the BR-"Master cylinder") 4. Remove the BR-"Booster") brake booster (Refer to the 5. Remove the brake light switch. 6. Remove the shaft bolt(A) connected to the bracket.
Engine B(mm) C(mm) Non A- D4DD, D4GA BS The others 280±2 140±4 273±3 140±4 ABS D4DD, D4GA 280±2 140±4 The others 273±2 140±4 Gap between the brake pedal and the floor. 1. After cranking the engine, check if the gap between the floor and the pedal is more than 45mm by pressing the pedal with 50kg. Free play clearance of the Brake pedal 1. Setting the brake pedal to the original position, check if the free play(B) clearance is 5mm at least by pressing the pedal(A).
Brake Booster Components SUDBRA005L 1. Clevis pin 2. Hose connector 3. Grommet 4. Master cylinder 5. Booster 6. Pedal assembly 7.
Removal 1. Loosen the bolt for mounting of the steering column assembly. Put the steering column down. 4. Loosen the 2 bolts for mounting the master cylinder. Disassemble the reservoir hose and the brake tube. Remove the master cylinder. 2. Loosen the bolt(A), Remove the instrument panel(B). KMTBR5524A KMTBR5003A 3. Taking out the brake hose linking between the brake oil and the master cylinder, evacuate the brake oil.
Installation 1. Insert the clevis pin (A) into the brake pedal. Fix the split pin firmly. KMTBR5004A 2. Tighten the booster mounting nut (C) to the pedal support member (B). 3. Connect the vacuum hose to the booster. 4. Assemble the master cylinder to the booster. Connect the reservoir hose and the brake tube. 5. Assemble the instrument panel. Install the steering column. - CAUTION After installing the brake booster, adjust the height of the brake pedal and the free play clearance.
Inspection There are two methods for inspecting the booster. The one is not to use the tester, the other is to use a simple tester for inspecting the characteristics. These two methods can be performed on vehicle. Before the inspection, check if the brake pipe and the hose are connected tightly or damaged. KMTBR5525A EMTBR5020A • CAUTION Be careful that a sharpen material does not intrude into the check valve. • Check at the opened state and at the closed state of the valve.
Test for temporarily operating of Booster The followings are for checking the general functions of the booster. • CAUTION If the booster has problem, it should be replaced in assembly because it can not be disassembled for repair. 1. Method without tester After checking the following three-items, if they are all normal, then most functions of booster would be normal. If one of following items has a problem, the booster may have been damaged.
2. Method for test using a simple tester As shown in following figures, connect the vacuum gauge, the pressure gauge and the stepping (foot pressing) power gauge. Test in the following sequence. If it lease one of two among the gauges shows abnormal valve, the following components may have a problem.
Brake Master Cylinder Components SUDBRA006L 1. Circlip 2. Guide bush 3. O-ring 4. Vacuum seal 5. Primary piston 6. Plunger Washer 7. Recup seal 8. Retainer ass’y 9. L-type seal 10. Secondary piston 11. Recup seal 12. Secondary Spring 13. Reservoir seal 14. Adaptor Pipe Fitting 15. Cylinder pin 16. Washer 17. Bolt 18.
Removal 1. Loosen the steering column assembly mounting bolt. Put down the steering column. 2. Loosen the bolt(A), Remove the instrument panel(B). 4. Remove the tubes connecting to the front brake and the rear brake. 5. Remove the 2 of master cylinder bracket nuts connecting to the booster. KMTBR5003A 3. Take out the brake hose installed between the brake oil tank and the master cylinder. Evacuate the brake oil. Take out the clutch hose of the clutch master cylinder. Evacuate the brake oil.
Installation 3. Install the master cylinder at the booster. 1. After assembling the secondary piston assembly(A), fix it with the cylinder pin. 4. Connect the two brake tubes. Connect the two brake tubes to the reservoir tank. CAUTION Clear the inside of the cylinder or piston with the brake oil or alcohol. When assembling, apply the brake oil at piston and seal. 5. After installing the master cylinder, perform the air bleeding. SUDBR9022L 2. Assemble the primary piston assembly(C).
Load Sensing Proportioning Valve(L.S.P.V) COMPONENTS SUDBRA007L 1. LSPV assembly 2. Bleeder screw 3. Bracket 4. Lever assembly 5. Sensor spring 6. Spring guide 7. Adjusting nut 8. Operating lever 9.
Removal 1. Remove the brake tube(A) connecting to the LSP valve. KMTBR5557A 2. Remove the LSP valve mounting bolt and nut. Service and Inspection of the LSPV 1. Check the LSPV as below when replace the sensor spring, valve body assembly or reinstall the rear axle, rear spring.
Front Brake Assembly Disc Brake Components SUDBRA008L 1. Brake disc 2. Hub 3. Bearing 4. Clow washer 5. Nut 6. Nut cab 7. Cottor pin 8. Grease cap 9. Sleeve plug 10. Sleeve bolt 11. Sleeve boot 12. Sleeve 13. Piston seal 14. Caliper bridge 15. Caliper housing 16. Piston 17. Boot 18. Retaining ring 19. Retaining pin 20. Brake pad 21.
Removal 1. Parking the car, remove the front tire. (Refer to the PA-"Front Axle") 4. Remove the pad and the spacer(A) from the caliper housing. 2. After taking off the clip(A), remove the retaining pin(B). KMTBR5535A 5. Loosen the bolt. Remove the flexible hose(A) from the caliper. KMTBR5533A 3. Remove the pad spring(A). CAUTION Fix the hose to prevent the brake oil from flowing out.
6. After loosening the 4 bolts(A), remove the bridge from the caliper housing. Installation 1. Install the pad to the caliper housing with being the warning indicator to the lower portion. CAUTION Do not contaminate the surfaces of the pad and disk with oil and dust. 2. Install a new pad spring and a new retaining pin(A). KMTBR5537A 7. Loosing the fixing bolt(A) of the caliper housing, remove the housing. KMTBR5533B 3. After inserting the retaining ring, install the clip. 4.
5. Install the bridge(A) to the caliper housing. Disassembly 1. Using a driver, remove the retaining ring(A). KMTBR5537A 6. Install the flexible hose(A). KMTBR5539A CAUTION • When installing, be careful that the hose is not twisted. • 2. Using a driver, remove the cylinder boot. If the brake oil is leaked, clear it perfectly. KMTBR5540A KMTBR5536A 7. Assemble the clip, the retaining pin, the pad spring and the pad. 8. Install the front wheel. 3.
KMTBR5541A 4. Remove the piston seal(A) using a driver. KMTBR5544A KMTBR5542A Reassembly 1. Clear the piston and the cylinder with the brake oil. 4. Assemble a new cylinder boot(A) to the caliper cylinder along to the direction as shown in figure. CAUTION Insert the boot correctly into the cylinder groove. 2. Insert a new piston seal(A) into the caliper cylinder groove. KMTBR5545A KMTBR5543A 3. Assemble the piston to the cylinder boot careful that the piston(A) is not twisted.
5. Assemble a new retaining ring(A) to the cylinder boot. CAUTION Be careful that the boot is not damaged. Inspection Check the Caliper Pad 1. Remove the front wheel 2. Check the pad thickness. Reference Value 12.5mm Limit Value 2.0mm KMTBR5546A 6. Assemble a new dust boot(A) to the caliper housing(B). Install a bushing at the dust boot. Check if the bushing can slip slightly. KMTBR5548A Check the Disk 1.
3. Replace the front disk 1) Disassemble the disk from the axle hub. 2) Loosening the 10 bolts, disassemble the axle lower part and the disk. 3) Install a new disk to the axle hub. SUDBR7502D 4) Install the axle hub to the steering knuckle. 2. Check the disk vibration 1) Before checking the disk vibration, firstly check the clearance of the wheel bearing. 2) Using a dial gauge, check the disk vibration at the 10mm position from the disk to outside.
Drum Brake Components SUDBRA009L 1. Return spring 2. Shoe hold down cup 3. Shoe hold down spring 4. Shoe hold down pin 5. Shoe and lining assembly 6. Rivet 7. Lining 8. Shoe 9. Pipe 10. Rubber 11. Connector 12. Wheel cylinder assembly 13. Cover 14. Backing plate 15.
Removal 1. Parking the car, remove the front tire. (Refer to the PA-"Front Axle"). 3. Remove the washer (A), the outer bearing (B) and the hub knuckle (C) from the knuckle (D). CAUTION When removing the wheel and tire (A), be careful that the hub bolt (B) is not damaged. KMTBR5008A 4. Remove the shoe hold down spring and the shoe hold down pin. Removing the return spring, remove the shoe and lining assembly. KMTBR5006A 2. After removing the wheel cap (A), remove the split pin (B) and the lock nut (C).
Replacement Wheel Cylinder 1. After running 64,000km, check if the inside of the adjuster piston and the wheel cylinder have rusts. Check that the dust boot is damaged. Check that the piston cup has been worn, cracked and swelled. After checking, if needed, replace the damaged parts. 2. Loosening the screw, disassemble the adjuster piston. KMTBR5554A 3) When performing the riveting, at the 0.4mm position of the side end surface, the shoe lining gap should be 0.3mm or less.
Installation 1. After assembling the wheel cylinder assembly, install the shoe return spring. 2. Install the shoe hold down spring. EMTBR5029A 3. Apply the grease at each part. 4. For installing the drum brake, refer to the PA-"Front Axle.
Parking Brake System Components SUDBRA010L 1. Return Spring 2. Return Spring 3. Shoe Guide Plate 4. Strut Spring 5. Adjuster Spring 6. Shoe Hold Pin 7. Spring Seat 8. Hold Spring 9. Spring Seat 10. Adjuster 11. Shoe Assembly 12. Strut 13. Parking Brake Cable 14. Shoe Assembly 15. Parking Brake Lever 16. Cable 17.
3. Remove the front propeller shaft(A). Removal 1. Make an alignment marking(C) to the flange yoke (A) of the front propeller shaft and the parking brake drum(B). Remove the tightening nut (D) of the propeller shaft. KMTBR5023A 4. Remove the parking brake cable clip (A). KMTBR5021A 2. Remove the tightening bolt (A) of the center bearing bracket. KMTBR5568A 5. Using a companion flange puller, remove the companion flange from the main shaft.
6. Using a socket wrench, remove the flange bolt. Remove the shoe and lining assembly. Installation 1. Install the shoe and lining assembly(B) to the back plate(A). • EMTBR5041A CAUTION Do not contaminate the lining surface with foreign materials. • The outer diameter of the lining should be Ø180. • Apply the grease at the following portions. - Contacting surface between the back plate and the shoe. - Contacting surface between the shoe and the anchor pin.
3. Aligning the align markings(C) of the rear axle companion flange (A) and the flange yoke (B) of the rear propeller shaft, install the tightening bolt (D) of the propeller shaft. 5. Aligning the align marking (C) of the flange yoke (A) of the front propeller shaft and that of the parking brake drum (B), install the tightening nut (D) of the propeller shaft. Tightening Torque : 98~117 Nm(10~12 kgf.m, 72.3~86.7 lb-ft) : P3 59~69 Nm(6~7 kgf.m, 43.3~50.6 lb-ft) : P2 Tightening Torque : 98~117 Nm(10~12 kgf.
Method for adjusting the Lining gap. 3. Returning the out cable. Tighten the nut (B) near the nut (A) with the specified torque. 1. Turn the adjuster to the shoe expansion direction until the shoe contacts the drum. Tightening Torque: 38.2~50Nm(3.9~5.1kgf.m, 28.2~36.9lb-ft) 2. Turn the adjust to the reverse direction of the shoe expansion direction with 8~10 notch. 4. After the initial adjusting of the cable, check the following items.
Rear Brake Assembly Drum Brake Components SUDBRA011L 1. Shoe hold down cup 2. Shoe hold down spring 3. Shoe hold down pin 4. Return spring 5. Shoe and lining assembly 6. Rivet 7. Lining 8. Shoe 9. Pipe 10. Rubber NOTICE Use alcohol, brake fluid, or other vegetable oil to clean rubber parts. When alcohol is used, do not immerse for more than 30 seconds. 11. Wheel cylinder assembly 12. Cover 13. Backing plate 14.
EMTBR5064A Removal 1. Place the wooden blocks (A) at the front and rear sides of the front wheel. CAUTION When removing the wheel and tire (B), be careful that the hub bolt (B) is not damaged. 4. After taking off the hub bolt (A), remove the axle shaft (B). KMTBR5010A 2. Loosen the wheel nut. Lift up the axle with the garage jack (A) and support the frame stand (B).
6. Loosening the lock nut tightening bolt (A), remove the lock washer (B). CAUTION Be careful that the outer hub bearing(C) is not torn off. 9. Remove the shoe hold down spring and the shoe hold down pin. Remove the return spring. Remove the lining assembly. KMTBR5015A 7. Using the special tool (09527-47000), remove the lock nut (A). EMTBR5029A Replacement Wheel Cylinder 1. After running 64,000km, check if the inside of the adjuster piston and the wheel cylinder have rusts.
Lining 1. Using a drill machine, drill the joining part of the shoe side rivet. Remove the lining. 4) After checking that the brake drum and the lining are contacted, if there is any defective, modify it with the brake lining grinder. • CAUTION Lining should be replaced in a kit. • Use the same size of the lining • Do not contaminate the lining surface with oil or grease. • When replacing the lining, clean the space between teeth of pulse-ring without damage of pulse-ring tooth.
Installation 1. After assembling the wheel cylinder assembly, install the shoe return spring. 2. Install the shoe hold down spring. EMTBR5029A 3. Apply the grease at each part. 4. Inject the recommended grease at the inside of the wheel hub (A). Recommended Grease: RETINAX 0434 of Hankook Shell Oil Co., Ltd RETINAX 0419 of Hankook Shell Oil Co., Ltd KO-GW02 of CheonMa Mineral Oil Co., Ltd KMTBR5017A 5. Install the rear wheel hub (B) and the outer bearing (C) at the axle housing (A).
Exhaust Brake Component location - D4GA engine SUDBRA016L 1. Front exhaust pipe 2. Exhaust brake assembly 3. Muffler 4. Manual transmission 5. Parking brake-drum 6.
Component(1) - D4GA engine SUDBRA017L 1. Vacuum tank 2. Magnetic valve 3. Exhaust brake unit 4.
Component(2) - D4GA engine SUDBRA018L 1. Cover 2. Clevis 3. Power chamber 4. Exhaust brake valve CAUTION Never do not disassemble the power chamber.
Component (1) - Except D4GA engine SUDBRA012L 1. Vacuum tank 2. Magnetic valve 3. Exhaust brake unit 4.
Component (2) - Except D4GA engine [Exhaust brake unit] SUDBRA013L 1. 2. 3. 4. Cover Clevis Power chamber Exhaust brake valve CAUTION The power chamber is non-disassembly type. Do not attempt to disassemble.
Replacement [Except D4GA engine] [D4GA engine] 1. Remove the vacuum pipe(B) connected to the exhaust brake unit(A). 1. Remove the vacuum pipe(B) connected to the exhaust brake unit(A). KMTBR5579A SUDBR8559D 2. Remove the mounting bolt connected to the front exhaust pipe. Remove the exhaust brake unit(A). 3. The installation is the reverse order of the removal. The mounting bolt(Front exhaust pipe - exhaust brake unit) : 44.1~58.8 Nm(4.5~6 kgf.m , 32.5~43.4 lb-ft) 2.
Disassembly Reassembly [D4GA engine] [D4GA engine] 1. Remove the exhaust brake cover(A). 1. Open the butter fly valve completely. Then adjust the adjusting bolt(B) and tighten the lock nut for fixing the lever(A). 2. Remove the clevis(B). 3. Remove the power chamber(C). SUDBR8026D CAUTION Never do not disassemble the power chamber. SUDBRA019L 2. Fixing the rod of the power chamber in the state of press-in with 2~4 mm, tighten the lock nut(A). [Except D4GA engine] 1. Remove the power chamber (A).
[Except D4GA engine] 1. With opening the butterfly valve, adjust the adjusting bolt(B) to fix the lever(A) and tighten the lock nut. SUDBRA020L 4. Tighten the mounting bolt like as below order when installing the exhaust brake. EMTBR5034A 2. Fixing the rod of the power chamber in the state of press-in with 2~4mm, tighten the lock nut(A). SUDBR8030D NOTICE Tighten the bolts like as picture. It doesn't matter wherever you start to tighten the bolt.
3. Adjust the adjusting bolt(A) so as that the gap between the body is 0.1~0.4mm, when the butterfly valve is fully closed due to the -650~-750mmHg of the vacuum pressure applied to the power chamber. And then tighten the lock nut. Check that the opening and closing of the brake valve is smoothly working when the power chamber is applied the vacuum pressure of -400~-600mmHg or atmospheric pressure. 2. 3-way Magnetic Valve 1) Check for air tightness 1.
2) Operating Inspection 1. Applying the -750mmHg vacuum pressure to the vacuum tank side valve, check that the valve is working at the voltage of 22V or less. EMTBR5038A 2. Closing the exhaust brake unit side valve with a plug and applying the 1kg/cm² air pressure to the atmosphere side valve, check that the valve is working at the voltage of 22V or less.
ABS ABS specification Item 24V Modulator Operating voltage range On-board voltage Operating temperature range 20~32 V 24 V -40°~ 85°C Motor relay On-board voltage On-board current DC24V 17.5 A DESCRIPTION How Hydraulic ABS Works Overview ABS wheel sensors detect wheel speeds. The sensors generate signals that are transmitted to an ECU. If the wheels start to lock, the ECU signals the modulator assembly to regulate the brake pressure of each locking wheel.
SYSTEM LAYOUT SUDBR9002L The ABS modulator assembly may be mounted in any orientation as long as the modulator is below the master cylinder and above the wheel cylinders. SYSTEM COMPONENTS The following components make up WABCO E Version HABS. Electronic Control Unit (ECU) The electronic control unit (ECU,A) processes sensor signals and generates solenoid valve commands to reduce, maintain or reapply brake pressure.
Modulator Assembly Sensor Spring Clip The modulator assembly contains brake fluid. Handle the modulator assembly with appropriate care. Do not expose the modulator assembly to impact loads or excessive vibrations. • It holds the wheel speed sensor in close proximity to the tooth wheel. Do not blow compressed air into the hydraulic ports. Mishandling the modulator assembly may lead to component damage and system failure.
Sensor Extension Cables • Two-wire cable with molded-on connector. • It connects the wheel speed sensor to the ECU. If the ABS indicator lamp comes on and stays on after the ignition is turned ON and the vehicle is driven in excess of four mph (6 km/h), there may be an active fault in the hydraulic ABS.
Using Blink Code Diagnostics Follow the steps listed in table A to use blink code diagnostics. Table A: Identifying E Version Hydraulic ABS Blink Codes Troubleshooting with Blink Code Diagnostics Mode Procedure Diagnostics Step I. Turn ignition on. System Response Possible responses: 1. ABS indicator lamp comes on No recognizable active faults in the ABS. No action momentarily then goes out, required. indicating System O.K. 2.
Clear Step V. ABS indicator lamp flashes eight Turn ignition ON. times. Clear faults from memory: Ground the 12th pin of Data Link Connector for at least three seconds, then release. Eight flashes not received. All stored faults successfully cleared. Turn ignition OFF. Turn ignition ON. The indicator lamp will stay on. This is because the ECU is looking for wheel speed. Drive the vehicle at a speed of four mph (6 km/h). Once the ECU senses wheel speed, the lamp will go off.
Trouble shooting and testing Blink code SUDBR9009L
SUDBR9010L
E Version Hydraulic(Add-on) ABS Blink Codes Use the information in Table B to identify a fault and check for correct volt or ohm measurements and repair the fault. List of fault codes Table B : E Version Hydraulic(Add-on) ABS Blink Codes 1st digit : Component being faulty 2nd digit : Detailed location of the fault or detailed description of the fault. Table B fault code (1st digit ) fault code (2nd digit) Fault number Repair Instruction 1 No Failure 1 No Failure - - 2 Sensor: Airgap 1 RHF 1 2.
fault code (1st digit ) fault code (2nd digit) Fault number Repair Instruction 7 Power Amplifier: Open circuit 1 RHF IV 27 1.1 7 Power Amplifier: Open circuit 2 RHF OV 28 1.1 7 Power Amplifier: Open circuit 3 LHF IV 29 1.1 7 Power Amplifier: Open circuit 4 LHF OV 30 1.1 7 Power Amplifier: Open circuit 5 RHR IV 31 1.1 7 Power Amplifier: Open circuit 6 RHR OV 32 1.1 7 Power Amplifier: Open circuit 7 LHR IV 33 1.1 7 Power Amplifier: Open circuit 8 LHR OV 34 1.
fault code (1st digit ) fault code (2nd digit) Fault number Repair Instruction 12 Pole Wheel 3 LHF 86 2.4 12 Pole Wheel 4 RHR 87 2.4 13 Brake Chatter 1 RHF 90 2.7 13 Brake Chatter 2 LHR 91 2.7 13 Brake Chatter 3 LHF 92 2.7 13 Brake Chatter 4 RHR 93 2.7 14 System 1 valve relay can't switch off 55 1.1 14 System 2 valve relay can't switch on 56 11.1 14 System 3 reference ground connection 57 11.2 14 System 5 ABS warning light bulb 59 12.
DTC Troubleshooting NOTICE A:enabled B:disabled C:Selective switched off D:temporary selective switched off E:Selective switch off only during cycling F:Control functions permanently disabled at this wheel end * Refer to 88 page about "Repair Instruction". System reaction SPN SID Main controller, safety cont - 254 roller FMI Repair 254 12 1.1 General act ABS EBD ions Brake ABS brake valve B power supply switched off B ON ON Sensor front right Airgap 2 2 1 2.1 / 2.
System reaction SPN SID FMI 3 3 13 2.2 Airgap 1 1 1 Impedance 1 1 Pole wheel 1 No trigger at all 1 Tire combination Repair General act ABS EBD ions Brake ABS take over sp- C eed from other rear wheel A OFF ON 2.1 / 2.4 C A OFF ON 5 2.5 C A OFF ON 1 7 2.4 C A OFF ON 1 8 2.1 / 2.3 / 2.4 / 2.5 / 2.6 C A OFF ON Inlet valve actuation time not 254 plausible (75 % switch on time within 5 minutes) 254 9 2.1 / 2.4 / 2.5 / 1.
System reaction SPN SID FMI Shorted to ubat 49 49 3 Open circuit 49 49 Shorted to ground 49 Repair 1.1 General act ABS EBD ions Brake ABS brake valve B power supply switched off B OFF ON 5 C A OFF ON 49 6 C A OFF ON brake valve B power supply switched off B OFF ON Power amp. inlet valve front left Shorted to ubat 42 42 3 1.
System reaction SPN SID FMI Shorted to ubat 51 51 3 Open circuit 51 51 Shorted to ground 51 Repair 1.1 General act ABS EBD ions Brake ABS brake valve B power supply switched off B OFF ON 5 C B OFF ON 51 6 C B OFF ON Power amp. endurance brake relay Shorted to ubat 13 13 3 15.1 A A OFF ON Open circuit 13 13 5 15.2 A A OFF ON Shorted to ground 13 13 6 15.
System reaction Engine retarder if configured SPN SID FMI 231 9 231 Repair 8.2 General act ABS EBD ions A A Brake OFF ABS ON Driveline retarder if configured OFF Exhaust retarder if configured - Engine ECU, engine hours (EH_R) if configured - Multiple failures System reaction SPN SID FMI Repair Brake General act ABS EBD Warning ions Lamp ABS Sensor failures at both rear According to DTC codes axle wheel ends Refer to repair instructions of DTC.
Repair Instruction R.I. Number R.I. SubNumber 1 ECU 1 2 Replace ECU. Sensor / Tone ring combination 1 Check airgap (range 0.2 -1.7 mm). Check bearing play and tone ring run out. Eliminate root cause for airgap extension and push sensor back in afterwards. Check tone ring for damage (missing teeth, corrosion). Replace tone ring if necessary. 2 Check tire size is within released range. Check number of teeth on tone ring. 3 Check J1939 communication with engine controller.
R.I. Number R.I. SubNumber 1 13 Instruction Check wiring and connections of the ABS warning lamp relay. Replace relay if necessary. Use break-out-box. Without ECU the voltage has to be measured. The voltage level shall be equivalent to battery voltage. Current-measurement with Pin 21/31 short to battery voltage. Brake-Warning Lamp relay 1 15 Check wiring and connections of the brake warning lamp relay. Replace relay if necessary. Use break-out-box. Without ECU the voltage has to be measured.
CONNECTOR CONFIGURATIONS SUDBR9011L
FULL CIRCUIT DIAGRAM SUDBR9012L INSPECTION Check voltage as follows. Standard Testing 1. Turn ignition ON. Test Equipment: Volt-Ohm Meter (VOM) 2. Check for the correct voltage. Use of a VOM with automatic polarity sensing is recommended. This eliminates the concern of the polarity of the meter leads during voltage measurements. System Requirements and Component Tests Tire Size Range For correct hydraulic ABS operation, front and rear tire sizes must be within 16% of each other.
Sensor Adjustment On steering axles, the sensor is typically accessible on the in-board side of the steering knuckle. connector, or at the pins on the ECU connector, as follows. 1. Turn ignition OFF. On drive axles, the sensor is typically accessible on the in-board side of the rear axle spindle. 2. To measure resistance at the pins on ECU connector, disconnect the ECU connector from the ECU. To adjust the sensor, push the sensor in until it contacts the tooth wheel.
NOTICE Use DOT 3 or DOT 4 hydraulic brake fluid. Refer to the vehicle specifications to determine which fluid to use. CAUTION Hydraulic brake fluid is a caustic substance. Contact with hydraulic brake fluid can cause skin irritation. Do not let hydraulic brake fluid touch any painted surfaces, as it will remove the paint. Hydraulic brake fluid may also damage certain non-metal surfaces. Do not let fluid get on brake pads, shoes, rotors or discs. 1.
ABS Modulator REMOVAL INSTALLATION CAUTION The modulator assembly contains hydraulic brake fluid, a caustic substance. Remove the valve carefully so that fluid does not leak and cause skin irritation or damage to components. 1. Position the old ECU onto the new modulator valve. Apply gentle pressure to seat the ECU. Motor connector must achieve full depth onto the housing. The gap between the modulator and the ECU must not exceed 0.08-inch (2 mm).
Wheel Speed Sensor DESCRIPTION Installation Sensor Lube Specification 1. Connect the sensor cable to the chassis harness. WABCO specifications call for a sensor lubricant with the following characteristics. 2. Install the fasteners used to hold the sensor cable in place. Lube must be mineral oil-based and contain molydisulfide. It should have excellent anti-corrosion and adhesion characteristics and be capable of continuous function in a temperature range of –40° to 300°F (–40° to 150°C). 3.
Installation 1. Connect the new sensor cable to the chassis harness. 2. Press the sensor spring clip into the sensor bracket, located on the rear axle, until it stops. Verify that the tabs are on the inboard side. 3. Apply a WABCO-recommended lubricant to the sensor. 4. Push the sensor completely into the spring clip until it contacts the tooth wheel. 5. Reattach the sensor cable to the cable clamps or clips. 6. Fasten the sensor cable every 12 inches(305mm).
ABS Control Module(ABS ECU) REMOVAL WARNING To prevent serious eye injury, always wear safe eye protection when you perform vehicle maintenance or service. CAUTION Hydraulic brake fluid is a caustic substance. Contact with the hydraulic brake fluid can cause skin irritation. Do not let hydraulic brake fluid touch any painted surfaces, as it will remove the paint. Hydraulic brake fluid may also damage certain non-metal surfaces. Do not let fluid contact brake pads, shoes, rotors or discs.
INSTALLATION CAUTION Excessive force in positioning the ECU onto the modulator will damage the ECU housing. Do not force the ECU into position. Use a gentle, even pressure when positioning the ECU. 1. Position the ECU onto the modulator valve. Apply gentle pressure to seat the ECU. Motor connectors must achieve full depth into the housing. The gap between the modulator and ECU must not exceed 0.08-inch (2 mm). 2.
SCHEMATIC DIAGRAMS ABS CONTROL SYSTEM (1) - HD65, 72, 78 SUDBR9026L
ABS CONTROL SYSTEM (2) - HD65, 72, 78 SUDBR9027L
ABS CONTROL SYSTEM (3) - HD65, 72, 78 SUDBR9028L
ABS CONTROL SYSTEM (4) - HD65, 72, 78 SUDBR9029L
ABS CONTROL SYSTEM (5) - HD65, 72, 78 SUDBR9030L
DTC Chart Number DTC Description 1 0000 Internal error 2 0001 Sensor Right Hand Front(Airgap) 3 0002 Sensor Left Hand Rear(Airgap) 4 0003 Sensor Left Hand Front(Airgap) 5 0004 Sensor Right Hand Rear(Airgap) 6 0009 Input Valve Right Hand Front(Short To Ubatt/Uvent) 7 000A Output Valve Right Hand Front(Short To Ubatt/Uvent) 8 000B Input Valve Left Hand Front(Short To Ubatt/Uvent) 9 000C Output Valve Left Hand Front(Short To Ubatt/Uvent) 10 000D Input Valve Right Hand Rear(Short
Number DTC Description 35 002F Input Valve Left Hand Rear(Short To Ground) 36 0030 Output Valve Left Hand Rear(Short To Ground) 37 0032 Endurance Brake Relay(Short To Ground) 38 0033 Brake Light Relay(Short To Ground) 39 0037 Valve Relay(Can't Switch Off) 40 0038 Valve Relay(Can't Switch On) 41 0039 Reference Ground Connection 42 003B ABS Warning Light Bulb 43 003C Brake Warning Light Bulb 44 003D High Voltage 45 003F Sensor Right Hand Front(Tire Combination) 46 0040 Se
Number DTC Description 70 0059 Pull Up Down Failure 71 005A Sensor Right Hand Front(Signal Disturbed) 72 005B Sensor Left Hand Rear(Signal Disturbed) 73 005C Sensor Left Hand Front(Signal Disturbed) 74 005D Sensor Right Hand Rear(Signal Disturbed)
0000 Internal error COMPONENT LOCATION SUDWAB9001L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes • Replace ECU. ABS disabled MONITOR SCAN TOOL DATA 2. Turn the ignition ON. 1. Connect scan tool to the self-diagnosis connector. 3. Monitor the service data on the scan tool.
COMPONENT INSPECTION VERIFICATION OF VEHICLE REPAIR 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 2. Drive the vehicle with approx. 15km/h or higher. 3. Turn the ignition ON. Leave the engine OFF. 4. Connect the scan tool and check the diagnostic trouble codes by using self-diagnosis. 5. Using the scan tool erase the diagnostic trouble codes stored in the HECU. 6.
0001 Sensor Right Hand Front(Airgap) COMPONENT LOCATION SUDWAB9002L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
3. Drive the vehicle straight at a constant speed in the normal road surface. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis 4. Monitor the data "Wheel speed RHF" parameter on the scan tool. ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. SUDWAB9008L 5. Is the data measured within specification? 3.
Vehicle Repair” procedure. VERIFICATION OF VEHICLE REPAIR ▶ Adjust it after checking the air gap between wheel sensor and rotor and go to "Verification of Vehicle Repair” procedure. After a repair, it is essential to verify that the fault has been corrected. Right Hand Front Wheel Sensor Inspection 1. Turn the ignition OFF. 2. Disconnect the right hand front when sensor connector. 3. Measure the resistance between positive (+) and negative (-) of the right hand front wheel sensor (C30).
0002 Sensor Left Hand Rear(Airgap) COMPONENT LOCATION SUDWAB9048L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
3. Drive the vehicle straight at a constant speed in the normal road surface. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis 4. Monitor the data "Wheel speed LHR" parameter on the scan tool. ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. SUDWAB9008L ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. 5.
Repair” procedure. Left Hand Rear Wheel Sensor Inspection 1. Turn the ignition OFF. 2. Disconnect the left hand rear connector (C37). 3. Measure the resistance between terminal positive (+) and terminal negative (-) of the left hand rear wheel sensor (C37). ■ Specification: 830 ~ 2100 Ω (At 20℃) 4. Is the resistance measured within specification? VERIFICATION OF VEHICLE REPAIR After a repair, it is essential to verify that the fault has been corrected. 1.
0003 Sensor Left Hand Front(Airgap) COMPONENT LOCATION SUDWAB9049L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
3. Drive the vehicle straight at a constant speed in the normal road surface. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis 4. Monitor the data "Wheel speed LHF" parameter on the scan tool. ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. SUDWAB9008L 5. Is the data measured within specification? TERMINAL & CONNECTOR INSPECTION 1.
COMPONENT INSPECTION VERIFICATION OF VEHICLE REPAIR Left Hand Front Wheel Sensor Inspection After a repair, it is essential to verify that the fault has been corrected. 1. Turn the ignition OFF. 2. Disconnect the left hand front connector (C31). 3. Measure the resistance between terminal positive (+) and terminal negative (-) of the left hand front wheel sensor. ■ Specification: 830 ~ 2,100 Ω (At 20℃) 4.
0004 Sensor Right Hand Rear(Airgap) COMPONENT LOCATION SUDWAB9050L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
3. Drive the vehicle straight at a constant speed in the normal road surface. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis 4. Monitor the data "Wheel speed RHR" parameter on the scan tool. ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. SUDWAB9008L 5. Is the data measured within specification? TERMINAL & CONNECTOR INSPECTION 1.
COMPONENT INSPECTION VERIFICATION OF VEHICLE REPAIR Right hand rear Wheel Sensor Inspection After a repair, it is essential to verify that the fault has been corrected. 1. Turn the ignition OFF. 2. Disconnect the right hand rear connector (C36). 3. Measure the resistance between terminal positive (+) and terminal negative (-) of the right hand rear wheel sensor (C36). ■ Specification: 830 ~ 2100 Ω (At 20℃) 4.
0009 Input Valve Right Hand Front(Short To Ubatt/Uvent) COMPONENT LOCATION SUDWAB9002L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS disabled 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
000A Output Valve Right Hand Front(Short To Ubatt/Uvent) COMPONENT LOCATION SUDWAB9002L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS disabled 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
000B Input Valve Left Hand Front(Short To Ubatt/Uvent) COMPONENT LOCATION SUDWAB9049L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS disabled 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
000C Output Valve Left Hand Front(Short To Ubatt/Uvent) COMPONENT LOCATION SUDWAB9049L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS disabled 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
000D Input Valve Right Hand Rear(Short To Ubatt/Uvent) COMPONENT LOCATION SUDWAB9050L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS disabled 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
000E Output Valve Right Hand Rear(Short To Ubatt/Uvent) COMPONENT LOCATION SUDWAB9050L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS disabled 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
000F Input Valve Left Hand Rear(Short To Ubatt/Uvent) COMPONENT LOCATION SUDWAB9048L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS disabled 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
0010 Output Valve Left Hand Rear(Short To Ubatt/Uvent) COMPONENT LOCATION SUDWAB9048L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS disabled 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
0011 Endurance Brake Relay(Short To Ubatt/Uvent) COMPONENT LOCATION SUDWAB9003L GENERAL DESCRIPTION DTC DESCRIPTION The Endurance Brake Relay (DBR) is a device with which ABS ECU forcefully disengages any third brake applied by the driver, such as a supplementary brake like endurance brake, during the operation of ABS, and is installed in vehicles of 2.5t or larger where both the endurance brake and ABS are applied.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When short to the control circuit of DBR relay is detected Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes • • The ABS function works normally.
deterioration, or damage. 3. Has a problem been found? ▶ Repeat "Component Inspection" procedure several times. VERIFICATION OF VEHICLE REPAIR ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. ▶ Go to “Signal Circuit Inspection” procedure. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 2.
0017 Sensor Right Hand Front(Impedance) COMPONENT LOCATION SUDWAB9002L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed RHF" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. 5.
Signal (-) Open Inspection Right Hand Front Wheel Sensor Inspection 1. Disconnect the HECU connector and the wheel speed sensor connector. 1. Turn the ignition OFF. 2. Turn the ignition ON. Leave the engine OFF. 2. Disconnect the right hand front when sensor connector. 3. Measure the resistance between the terminal 30 of HECU harness connector (C60) and the terminal 2 of wheel speed sensor harness connector (C30). 3.
0018 Sensor Left Hand Rear(Impedance) COMPONENT LOCATION SUDWAB9048L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed RHF" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. 5.
Signal (-) Open Inspection Left Hand Rear Wheel Sensor Inspection 1. Disconnect the HECU connector and the wheel speed sensor connector. 1. Turn the ignition OFF. 2. Turn the ignition ON. Leave the engine OFF. 3. Measure the resistance between terminal positive (+) and terminal negative (-) of the left hand rear wheel sensor (C37). 3. Measure the resistance between the terminal 23 of HECU harness connector (C60) and the terminal 2 of wheel speed sensor harness connector (C37).
0019 Sensor Left Hand Front(Impedance) COMPONENT LOCATION SUDWAB9049L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed RHF" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. 5.
Signal (-) Open Inspection VERIFICATION OF VEHICLE REPAIR 1. Disconnect the HECU connector and the wheel speed sensor connector. After a repair, it is essential to verify that the fault has been corrected. 2. Turn the ignition ON. Leave the engine OFF. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Measure the resistance between the terminal 29 of HECU harness connector (C60) and the terminal 2 of wheel speed sensor harness connector (C31).
001A Sensor Right Hand Rear(Impedance) COMPONENT LOCATION SUDWAB9050L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed RHF" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. 5.
Signal (-) Open Inspection VERIFICATION OF VEHICLE REPAIR 1. Disconnect the HECU connector and the wheel speed sensor connector. After a repair, it is essential to verify that the fault has been corrected. 2. Turn the ignition ON. Leave the engine OFF. 1. Connect the scan tool and perform the self diagnosis.Check diagnostic trouble codes. 3. Measure the resistance between the terminal 27 of HECU harness connector (C60) and the terminal 2 of wheel speed sensor harness connector (C36).
001B Input Valve Right Hand Front(Open Circuit) COMPONENT LOCATION SUDWAB9002L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS function temporarily disabled for concerned wheel. 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
001C Output Valve Right Hand Front(Open Circuit) COMPONENT LOCATION SUDWAB9002L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS function temporarily disabled for concerned wheel. 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
001D Input Valve Left Hand Front(Open Circuit) COMPONENT LOCATION SUDWAB9049L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS function disabled for concerned wheel 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
001E Output Valve Left Hand Front(Open Circuit) COMPONENT LOCATION SUDWAB9049L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS function temporarily disabled for concerned wheel. 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis.Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4. Connect the scan tool and check the diagnostic trouble codes by using self-diagnosis.
001F Input Valve Right Hand Rear(Open Circuit) COMPONENT LOCATION SUDWAB9050L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS function temporarily disabled for concerned wheel. 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
0020 Output Valve Right Hand Rear(Open Circuit) COMPONENT LOCATION SUDWAB9050L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS function temporarily disabled for concerned wheel. 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
0021 Input Valve Left Hand Rear(Open Circuit) COMPONENT LOCATION SUDWAB9048L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS function temporarily disabled for concerned wheel. 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
0022 Output Valve Left Hand Rear(Open Circuit) COMPONENT LOCATION SUDWAB9048L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS function temporarily disabled for concerned wheel. 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
0023 Endurance Brake Relay(Open Circuit) COMPONENT LOCATION SUDWAB9003L GENERAL DESCRIPTION DTC DESCRIPTION The Endurance Brake Relay (DBR) is a device with which ABS ECU forcefully disengages any third brake applied by the driver, such as a supplementary brake like endurance brake, during the operation of ABS, and is installed in vehicles of 2.5t or larger where both the endurance brake and ABS are applied.
DTC DETECTING CONDITION Item Detecting Condition DTC Strategy Signal monitoring Enable Conditions Ignition ON Threshold Value When the ABS relay control circuit is open Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes Possible Cause • • • The ABS function works normally. • Poor contact of connector and wiring damage. Open of power of control circuit. Defective DBR relay. SPECIFICATION 200 ~ 450Ω (At 20℃) ABS relay coil resistance 3.
COMPONENT INSPECTION VERIFICATION OF VEHICLE REPAIR 1. Turn the ignition OFF. 2. Disconnect the DBR relay connector (M15). After a repair, it is essential to verify that the fault has been corrected. 3. Measure the resistance between terminals 3 and 5 of DBR relay component. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. ■ Specification: DBR relay coil resistance: 200 ~ 450 Ω (At 20℃) 2.
0024 Brake Light Relay(Open Circuit) COMPONENT LOCATION SUDWAB9004L GENERAL DESCRIPTION DTC DESCRIPTION Stop lamp relay is a relay that controls brakes, etc. HECU continues to monitor the relay control signals, such as brakes. In case of a short-circuit being detected in relay control lines such as brakes, HECU determines it as a failure and outputs a fail code.
DTC DETECTING CONDITION Item Detecting Condition DTC Strategy Signal monitoring Enable Conditions Ignition ON Threshold Value When the brake light relay control circuit is open Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes Possible Cause • • • Poor contact of connector and wiring damage. Open of power of control circuit. Defective brake light control relay. SPECIFICATION 200 ~ 450 Ω (At 20℃) Brake light relay coil resistance MONITOR SCAN TOOL DATA 1.
deterioration, or damage. 3. Has a problem been found? ▶ Replace the relay and go to "Verification of Vehicle Repair” procedure. ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. ▶ Repeat "Component Inspection" procedure several times. VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. CONTROL CIRCUIT INSPECTION Short to Control Power Inspection 1. Turn the ignition OFF. 2. Disconnect the brake light relay (M102) and HECU connector (C60). 3.
0029 Input Valve Right Hand Front(Short To Ground) COMPONENT LOCATION SUDWAB9002L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS function temporarily disabled for concerned wheel. 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
002A Output Valve Right Hand Front(Short To Ground) COMPONENT LOCATION SUDWAB9002L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS function temporarily disabled for concerned wheel. 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
002B Input Valve Left Hand Front(Short To Ground) COMPONENT LOCATION SUDWAB9049L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS function temporarily disabled for concerned wheel. 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
002C Output Valve Left Hand Front(Short To Ground) COMPONENT LOCATION SUDWAB9049L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS function temporarily disabled for concerned wheel. 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
002D Input Valve Right Hand Rear(Short To Ground) COMPONENT LOCATION SUDWAB9050L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS function temporarily disabled for concerned wheel. 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
002E Output Valve Right Hand Rear(Short To Ground) COMPONENT LOCATION SUDWAB9050L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS function temporarily disabled for concerned wheel. 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
002F Input Valve Left Hand Rear(Short To Ground) COMPONENT LOCATION SUDWAB9048L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS function temporarily disabled for concerned wheel. 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
0030 Output Valve Left Hand Rear(Short To Ground) COMPONENT LOCATION SUDWAB9048L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS function temporarily disabled for concerned wheel. 4.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
0032 Endurance Brake Relay(Short To Ground) COMPONENT LOCATION SUDWAB9003L GENERAL DESCRIPTION DTC DESCRIPTION The Endurance Brake Relay (DBR) is a device with which ABS ECU forcefully disengages any third brake applied by the driver, such as a supplementary brake like endurance brake, during the operation of ABS, and is installed in vehicles of 2.5t or larger where both the endurance brake and ABS are applied.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When short to the control circuit of ABS relay is detected Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes • • The ABS function works normally. • Poor connection of connector and wiring damage. Short to ground of control circuit. Defective ABS control relay.
deterioration, or damage. 3. Has a problem been found? ▶ Replace the relay and go to "Verification of Vehicle Repair” procedure. ▶ Repeat "Component Inspection" procedure several times. ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. ▶ Go to “Signal Circuit Inspection” procedure. CONTROL CIRCUIT INSPECTION Control Short to Ground Inspection 1. Turn the ignition OFF. 2. Disconnect the DBR relay connector (M15) and HECU connector (C60). 3.
0033 Brake Light Relay(Short To Ground) COMPONENT LOCATION SUDWAB9004L GENERAL DESCRIPTION DTC DESCRIPTION Stop lamp relay is a relay that controls brakes, etc. HECU continues to monitor the relay control signals, such as brakes. In case of a short-circuit being detected in relay control lines such as brakes, HECU determines it as a failure and outputs a fail code.
DTC DETECTING CONDITION Item Detecting Condition DTC Strategy Signal monitoring Enable Conditions Ignition ON Threshold Value When the brake light relay control circuit is short Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes Possible Cause • • • The ABS function works normally. • Poor contact of connector and wiring damage. Short to ground of control circuit. Defective brake light relay.
deterioration, or damage. 3. Has a problem been found? ▶ Replace the relay and go to "Verification of Vehicle Repair” procedure. ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. ▶ Repeat "Component Inspection" procedure several times. VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. CONTROL CIRCUIT INSPECTION Short to Control Power Inspection 1. Turn the ignition OFF. 2. Disconnect the brake light relay (M102) and HECU connector (C60). 3.
0037 Valve Relay(Can't Switch Off) COMPONENT LOCATION SUDWAB9001L GENERAL DESCRIPTION DTC DESCRIPTION HECU supplies the battery voltage to all solenoid valves through the valve relay controlled by ECU. All solenoid valves and valve relay are installed in HECU. HECU determines whether the switch that operates the valve relay is turned on/off while the power to the system is on. If the switch OFF does not work, a fail code is output.
5. Is the voltage measured within specification? ▶ Go to “Ground Circuit Inspection” procedure. ▶ Check the fuse 30A. If it is burnt, replace it. When the fuse is normal, check open of terminal 17 of ABS control module harness connector and short to ground. Repair it if there is any problem and go to “Verification of Vehicle Repair” procedure. GROUND CIRCUIT INSPECTION 1. Turn the ignition OFF. 2. Disconnect the HECU connector (C60). 3.
0038 Valve Relay(Can't Switch On) COMPONENT LOCATION SUDWAB9001L GENERAL DESCRIPTION DTC DESCRIPTION HECU supplies the battery voltage to all solenoid valves through the valve relay controlled by ECU. All solenoid valves and valve relay are installed in HECU. HECU determines whether the switch that operates the valve relay is turned on/off while the power to the system is on. If the switch ON does not work, a fail code is output.
5. Is the voltage measured within specification? ▶ Go to “Ground Circuit Inspection” procedure. ▶ Check the fuse 30A. If it is burnt, replace it. When the fuse is normal, check open of terminal 17 of ABS control module harness connector and short to ground. Repair it if there is any problem and go to “Verification of Vehicle Repair” procedure. GROUND CIRCUIT INSPECTION 1. Turn the ignition OFF. 2. Disconnect the HECU connector (C60). 3.
0039 Reference Ground Connection COMPONENT LOCATION SUDWAB9001L GENERAL DESCRIPTION DTC DESCRIPTION It is used as a ground connection to find out the basic value of the ground connection of HECU. If the difference between the ground connection of HECU and that of the reference is more than -1.6 V and smaller than 1.0 V, a fail code is output.
problem, replace the HECU and go to "Verification of Vehicle Repair” procedure. ▶ Repair open between the reference ground of ABS control module harness connector and chassis ground and check poor contact. If there is any problem repair poor contact. And go to "Verification of Vehicle Repair” procedure. VERIFICATION OF VEHICLE REPAIR After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 2.
003B ABS Warning Light Bulb COMPONENT LOCATION SUDWAB9005L GENERAL DESCRIPTION DTC DESCRIPTION The ABS warning light, which is installed in the dashboard, is turned on to notify the driver when ABS control is malfunctioning and requires repairing. HECU outputs a fail code when the ABS warning light is not turned on.
DTC DETECTING CONDITION Item Detecting Condition DTC Strategy Signal monitoring Enable Conditions Ignition ON Threshold Value ABS warning lamp does not work. Diagnosis Time 5,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes Possible Cause • • • The ABS function works normally. • Poor connection of connector and wiring damage. Open of control circuit. Defective ABS warning lamp relay. SPECIFICATION ABS warning lamp relay coil resistance MONITOR SCAN TOOL DATA 1.
COMPONENT INSPECTION 1. Turn the ignition OFF. ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. 2. Disconnect the ABS warning lamp relay connector (M101). 3. Measure the resistance between terminals 3 and 5 of ABS warning lamp relay component. ▶ Go to “Signal Circuit Inspection” procedure. CONTROL CIRCUIT INSPECTION Control Circuit inspection 1. Turn the ignition OFF. 2. Disconnect the HECU connector (C60). 3. Turn the ignition ON. Leave the engine OFF. 4.
003C Brake Warning Light Bulb COMPONENT LOCATION SUDWAB9004L GENERAL DESCRIPTION DTC DESCRIPTION The BRAKE warning light, which is installed in the dashboard, is turned on to notify the driver when the vehicle is abnormal and requires repairing. HECU outputs a fail code when the break warning light is not turned on even though the vehicle is in the conditions in which the light should be on.
DTC DETECTING CONDITION Item Detecting Condition DTC Strategy Signal monitoring Enable Conditions Ignition ON Threshold Value ABS warning lamp does not work. Diagnosis Time 5,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes Possible Cause • • • The ABS function works normally. • Poor connection of connector and wiring damage. Open of control circuit. Defective brake warning lamp relay. SPECIFICATION Brake warning lamp relay coil resistance MONITOR SCAN TOOL DATA 1.
COMPONENT INSPECTION 1. Turn the ignition OFF. ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. 2. Disconnect the brake warning lamp relay connector (M102). 3. Measure the resistance between terminals 3 and 5 of brake warning lamp relay component. ▶ Go to “Signal Circuit Inspection” procedure. CONTROL CIRCUIT INSPECTION Control Circuit inspection 1. Turn the ignition OFF. 2. Disconnect the HECU connector (C60). 3. Turn the ignition ON. Leave the engine OFF. 4.
003D High Voltage COMPONENT LOCATION SUDWAB9006L GENERAL DESCRIPTION DTC DESCRIPTION The battery voltage of a normal vehicle fluctuates between 23.5 V and 28.5 V. Particularly, the voltage fluctuation is closely related to the pump and solenoids related to ABS, and HECU monitors such a battery voltage change. DTC DETECTING CONDITION Item Detecting Condition DTC Strategy Signal monitoring Enable Conditions Ignition ON Threshold Value Voltage is higher than 32 V in 24 V HECU.
▶ Check the corrosion and degradation of alternator B+ cable terminal and replace the cable as necessary. TERMINAL & CONNECTOR INSPECTION 1. Many malfunctions in the electrical system are caused by poor harness, and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage. 2. Thoroughly check connectors for looseness, poor connection, bent, corrosion, contamination, deterioration, or damage. 3.
003F Sensor Right Hand Front(Tire Combination) COMPONENT LOCATION SUDWAB9002L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
MONITOR SCAN TOOL DATA COMPONENT INSPECTION 1. Start the engine. Check Tire Size 2. Connect the scan tool to the connector. Select the service data. self-diagnosis 1. Turn the ignition OFF. 2. Check tires and wheel size. 3. Drive the vehicle straight at a constant speed in the normal road surface. 4. Monitor the data "Wheel speed RHF" parameter on the scan tool. ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 5. Is the data measured within specification? 3.
0040 Sensor Left Hand Rear(Tire Combination) COMPONENT LOCATION SUDWAB9048L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed LHR" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L 5. Is the data measured within specification? TERMINAL & CONNECTOR INSPECTION 1.
COMPONENT INSPECTION VERIFICATION OF VEHICLE REPAIR 1. Turn the ignition OFF. After a repair, it is essential to verify that the fault has been corrected. 2. Check tires and wheel size. 3. Are tires installed within specification? ▶ Go to next procedure. 1. Connect the scan tool and perform the self diagnosis.Check diagnostic trouble codes. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 3. Drive the vehicle under conditions noted in failure records.
0041 Sensor Left Hand Front(Tire Combination) COMPONENT LOCATION SUDWAB9049L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed LHF" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L 5. Is the data measured within specification? TERMINAL & CONNECTOR INSPECTION 1.
COMPONENT INSPECTION VERIFICATION OF VEHICLE REPAIR 1. Turn the ignition OFF. After a repair, it is essential to verify that the fault has been corrected. 2. Check tires and wheel size. 3. Are tires installed within specification? ▶ Go to next procedure. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 3. Drive the vehicle under conditions noted in failure records.
0042 Sensor Right Hand Rear(Tire Combination) COMPONENT LOCATION SUDWAB9050L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed RHR" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L 5. Is the data measured within specification? 2.
Check the Number of Teeth on Tone Rings VERIFICATION OF VEHICLE REPAIR 1. Turn the ignition OFF. After a repair, it is essential to verify that the fault has been corrected. 2. Check the number of teeth on right hand rear tone ring. 3. Is the number of tone wheel correct? 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. ▶ Go to "Verification of Vehicle Repair” procedure.
0043 Pump Motor Does Not Switch On COMPONENT LOCATION SUDWAB9001L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition DTC Strategy Signal monitoring Enable Conditions Ignition ON Threshold Value When the pump motor in HECU does not work Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes • MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the Possible Cause self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS disabled 4. Check the pump motor for operation when activating the actuator.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. 2. Drive the vehicle with approx. 15km/h or higher. 3. Turn the ignition ON. Leave the engine OFF. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool.
0044 Pump Motor Does Not Switch Off COMPONENT LOCATION SUDWAB9001L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition DTC Strategy Signal monitoring Enable Conditions Ignition ON Threshold Value When the pump motor in HECU will not stop Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes • MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the Possible Cause self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS disabled 4. Check the pump motor for operation when activating the actuator.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
0045 Pump Motor Does Not Turn COMPONENT LOCATION SUDWAB9001L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition DTC Strategy Signal monitoring Enable Conditions Ignition ON Threshold Value When the pump motor in HECU does not work Diagnosis Time 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes • MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the Possible Cause self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS disabled 4. Check the pump motor for operation when activating the actuator.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
0046 Pump Motor Supply Voltage Missing COMPONENT LOCATION SUDWAB9001L GENERAL DESCRIPTION DTC DESCRIPTION HECU supplies the battery voltage to all solenoid valves through the valve relay controlled by ECU. All solenoid valves and valve relay are installed in HECU. HECU monitors the incoming system power, and if the pump motor does not function due to no power, it outputs a fail code.
▶ Go to "Ground Circuit Inspection" procedure. ▶ Check the fuse 30A. If it is burnt, replace it. When the fuse is normal, check open circuit between terminal (+) of battery and terminal 16 of HECU connector (C60) and short to ground. Repair if there is any problem and go to “Verification of Vehicle Repair” procedure. GROUND CIRCUIT INSPECTION 1. Turn the ignition OFF. 2. Disconnect the HECU connector (C60). 3.
0047 Pump Motor Relay Voltage Missing COMPONENT LOCATION SUDWAB9001L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition DTC Strategy Signal monitoring Enable Conditions Ignition ON Threshold Value When the pump motor in HECU does not work Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes • MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the Possible Cause self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS disabled 4. Check the pump motor for operation when activating the actuator.
VERIFICATION OF VEHICLE REPAIR ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Turn the ignition ON. Leave the engine OFF. 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool. 4.
0049 Sensor Right Hand Front(No Trigger At All) COMPONENT LOCATION SUDWAB9002L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed RHF" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L 5. Is the data measured within specification? 3.
Vehicle Repair” procedure. VERIFICATION OF VEHICLE REPAIR ▶ Adjust it after checking the air gap between wheel sensor and rotor and go to "Verification of Vehicle Repair” procedure. After a repair, it is essential to verify that the fault has been corrected. Right Hand Front Wheel Sensor Inspection 1. Turn the ignition OFF. 2. Disconnect the right hand front when sensor connector. 3. Measure the resistance between positive (+) and negative (-) of the right hand front wheel sensor (C30).
004A Sensor Left Hand Rear(No Trigger At All) COMPONENT LOCATION SUDWAB9048L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed LHR" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. 5.
Repair” procedure. Left Hand Rear Wheel Sensor Inspection 1. Turn the ignition OFF. 2. Disconnect the left hand rear connector (C37). 3. Measure the resistance between terminal positive (+) and terminal negative (-) of the left hand rear wheel sensor (C37). ■ Specification: 830 ~ 2100 Ω (At 20℃) 4. Is the resistance measured within specification? VERIFICATION OF VEHICLE REPAIR After a repair, it is essential to verify that the fault has been corrected. 1.
004B Sensor Left Hand Front(No Trigger At All) COMPONENT LOCATION SUDWAB9049L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed LHF" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L 5. Is the data measured within specification? TERMINAL & CONNECTOR INSPECTION 1.
COMPONENT INSPECTION VERIFICATION OF VEHICLE REPAIR Left Hand Front Wheel Sensor Inspection After a repair, it is essential to verify that the fault has been corrected. 1. Turn the ignition OFF. 2. Disconnect the left hand front connector (C31). 3. Measure the resistance between terminal positive (+) and terminal negative (-) of the left hand front wheel sensor. ■ Specification: 830 ~ 2,100 Ω (At 20℃) 4.
004C Sensor Right Hand Rear(No Trigger At All) COMPONENT LOCATION SUDWAB9050L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed RHR" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L 5. Is the data measured within specification? TERMINAL & CONNECTOR INSPECTION 1.
COMPONENT INSPECTION VERIFICATION OF VEHICLE REPAIR Right hand rear Wheel Sensor Inspection After a repair, it is essential to verify that the fault has been corrected. 1. Turn the ignition OFF. 2. Disconnect the right hand rear connector (C36). 3. Measure the resistance between terminal positive (+) and terminal negative (-) of the right hand rear wheel sensor (C36). ■ Specification: 830 ~ 2100 Ω (At 20℃) 4.
004D J1939 Internal Error COMPONENT LOCATION SUDWAB9001L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes • Replace ECU. ABS disabled MONITOR SCAN TOOL DATA 2. Turn the ignition ON. 1. Connect scan tool to the self-diagnosis connector. 3. Monitor the service data on the scan tool.
COMPONENT INSPECTION VERIFICATION OF VEHICLE REPAIR 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 2. Drive the vehicle with approx. 15km/h or higher. 3. Turn the ignition ON. Leave the engine OFF. 4. Connect the scan tool and check the diagnostic trouble codes by using self-diagnosis. 5. Using the scan tool erase the diagnostic trouble codes stored in the HECU. 6.
004E J1939 Bus COMPONENT LOCATION SUDWAB9001L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes • Replace ECU. ABS disabled MONITOR SCAN TOOL DATA 2. Turn the ignition ON. 1. Connect scan tool to the self-diagnosis connector. 3. Monitor the service data on the scan tool.
COMPONENT INSPECTION VERIFICATION OF VEHICLE REPAIR 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 2. Drive the vehicle with approx. 15km/h or higher. 3. Turn the ignition ON. Leave the engine OFF. 4. Connect the scan tool and check the diagnostic trouble codes by using self-diagnosis. 5. Using the scan tool erase the diagnostic trouble codes stored in the HECU. 6.
004F J1939 Message COMPONENT LOCATION SUDWAB9001L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes • Replace ECU. ABS disabled MONITOR SCAN TOOL DATA 2. Turn the ignition ON. 1. Connect scan tool to the self-diagnosis connector. 3. Monitor the service data on the scan tool.
COMPONENT INSPECTION VERIFICATION OF VEHICLE REPAIR 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 2. Drive the vehicle with approx. 15km/h or higher. 3. Turn the ignition ON. Leave the engine OFF. 4. Connect the scan tool and check the diagnostic trouble codes by using self-diagnosis. 5. Using the scan tool erase the diagnostic trouble codes stored in the HECU. 6.
0050 Inlet Valve(Right Hand Front) Actuation Time Unplausible COMPONENT LOCATION SUDWAB9002L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value .When the HECU detects malfunction in the control system.Air gap : 0. 2~1.7 mm Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS disabled 4.
Vehicle Repair” procedure. VERIFICATION OF VEHICLE REPAIR After a repair, it is essential to verify that the fault has been corrected. ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. 2. Drive the vehicle with approx. 15km/h or higher. 3. Turn the ignition ON. Leave the engine OFF. 4. Connect the scan tool and check the diagnostic trouble codes by using self-diagnosis. 5. Using the scan tool erase the diagnostic trouble codes stored in the HECU. 1.
0051 Inlet Valve(Left Hand Rear) Actuation Time Unplausible COMPONENT LOCATION SUDWAB9048L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system.Air gap : 0.2 ~1.7 mm Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS disabled 4.
Vehicle Repair” procedure. VERIFICATION OF VEHICLE REPAIR After a repair, it is essential to verify that the fault has been corrected. ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. 2. Drive the vehicle with approx. 15km/h or higher. 3. Turn the ignition ON. Leave the engine OFF. 4. Connect the scan tool and check the diagnostic trouble codes by using self-diagnosis. 5. Using the scan tool erase the diagnostic trouble codes stored in the HECU. 1.
0052 Inlet Valve(Left Hand Front) Actuation Time Unplausible COMPONENT LOCATION SUDWAB9049L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system.Air gap : 0.2 ~1.7 mm Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS disabled 4.
Vehicle Repair” procedure. VERIFICATION OF VEHICLE REPAIR After a repair, it is essential to verify that the fault has been corrected. ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. 2. Drive the vehicle with approx. 15km/h or higher. 3. Turn the ignition ON. Leave the engine OFF. 4. Connect the scan tool and check the diagnostic trouble codes by using self-diagnosis. 5. Using the scan tool erase the diagnostic trouble codes stored in the HECU. 1.
0053 Inlet Valve(Right Hand Rear) Actuation Time Unplausible COMPONENT LOCATION SUDWAB9050L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system.Air gap : 0.2 ~1.7 mm Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA 1. Connect the connector. scan tool to the self-diagnosis 2. Turn the ignition ON. • Replace ECU. ABS disabled 4.
Vehicle Repair” procedure. VERIFICATION OF VEHICLE REPAIR After a repair, it is essential to verify that the fault has been corrected. ▶ Go to “Signal Circuit Inspection” procedure. COMPONENT INSPECTION 1. Start the engine. 2. Drive the vehicle with approx. 15km/h or higher. 3. Turn the ignition ON. Leave the engine OFF. 4. Connect the scan tool and check the diagnostic trouble codes by using self-diagnosis. 5. Using the scan tool erase the diagnostic trouble codes stored in the HECU. 1.
0054 Pole Wheel Right Hand Front(Cyclic Failure) COMPONENT LOCATION SUDWAB9002L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed RHF" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. 5.
Repair” procedure. VERIFICATION OF VEHICLE REPAIR 1. Turn the ignition OFF. After a repair, it is essential to verify that the fault has been corrected. 2. Check the number of teeth on right hand front tone ring. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Is the number of teeth normal? 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool.
0055 Pole Wheel Left Hand Rear(Cyclic Failure) COMPONENT LOCATION SUDWAB9048L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed LHR" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. 5.
Repair” procedure. VERIFICATION OF VEHICLE REPAIR 1. Turn the ignition OFF. After a repair, it is essential to verify that the fault has been corrected. 2. Check the number of teeth on left hand rear tone ring. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Is the number of teeth normal? 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool.
0056 Pole Wheel Left Hand Front(Cyclic Failure) COMPONENT LOCATION SUDWAB9049L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed LHF" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. 5.
Repair” procedure. VERIFICATION OF VEHICLE REPAIR 1. Turn the ignition OFF. After a repair, it is essential to verify that the fault has been corrected. 2. Check the number of teeth on left hand front tone ring. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Is the number of teeth normal? 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool.
0057 Pole Wheel Right Hand Rear(Cyclic Failure) COMPONENT LOCATION SUDWAB9050L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed RHR" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. 5.
Repair” procedure. VERIFICATION OF VEHICLE REPAIR 1. Turn the ignition OFF. After a repair, it is essential to verify that the fault has been corrected. 2. Check the number of teeth on right hand rear tone ring. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Is the number of teeth normal? 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool.
0058 Clamp Transistor Failure COMPONENT LOCATION SUDWAB9001L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes MONITOR SCAN TOOL DATA • Replace ECU. ABS disabled 3. Monitor the service data on the scan tool. 1. Connect scan tool to the self-diagnosis connector. 2. Turn the ignition ON.
COMPONENT INSPECTION VERIFICATION OF VEHICLE REPAIR 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 2. Drive the vehicle with approx. 15km/h or higher. 3. Turn the ignition ON. Leave the engine OFF. 4. Connect the scan tool and check the diagnostic trouble codes by using self-diagnosis. 5. Using the scan tool erase the diagnostic trouble codes stored in the HECU. 6.
0059 Pull Up Down Failure COMPONENT LOCATION SUDWAB9001L GENERAL DESCRIPTION DTC DESCRIPTION The Antilock Brake System (ABS) prevents the skid phenomenon that may occurs during a sudden brake while the vehicle is driving or when there is snow or water on the road.
DTC DETECTING CONDITION Item Detecting Condition Possible Cause DTC Strategy Signal monitoring • Enable Conditions Ignition ON Threshold Value When the HECU detects malfunction in the control system Diagnosis Time Below 1,000 ms Fail Safe Fuel Cut No Fuel Limit Yes MIL Yes • Replace ECU. ABS disabled MONITOR SCAN TOOL DATA 2. Turn the ignition ON. 1. Connect scan tool to the self-diagnosis connector. 3. Monitor the service data on the scan tool.
COMPONENT INSPECTION VERIFICATION OF VEHICLE REPAIR 1. Start the engine. After a repair, it is essential to verify that the fault has been corrected. 2. Drive the vehicle with approx. 15km/h or higher. 3. Turn the ignition ON. Leave the engine OFF. 4. Connect the scan tool and check the diagnostic trouble codes by using self-diagnosis. 5. Using the scan tool erase the diagnostic trouble codes stored in the HECU. 6.
005A Sensor Right Hand Front(Signal Disturbed) COMPONENT LOCATION SUDWAB9002L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed RHF" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. 5.
Repair” procedure. VERIFICATION OF VEHICLE REPAIR 1. Turn the ignition OFF. After a repair, it is essential to verify that the fault has been corrected. 2. Check the number of teeth on right hand front tone ring. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Is the number of teeth normal? 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool.
005B Sensor Left Hand Rear(Signal Disturbed) COMPONENT LOCATION SUDWAB9048L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed LHR" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. 5.
Repair” procedure. VERIFICATION OF VEHICLE REPAIR 1. Turn the ignition OFF. After a repair, it is essential to verify that the fault has been corrected. 2. Check the number of teeth on left hand rear tone ring. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Is the number of teeth normal? 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool.
005C Sensor Left Hand Front(Signal Disturbed) COMPONENT LOCATION SUDWAB9049L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed LHF" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. 5.
Repair” procedure. VERIFICATION OF VEHICLE REPAIR 1. Turn the ignition OFF. After a repair, it is essential to verify that the fault has been corrected. 2. Check the number of teeth on left hand front tone ring. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Is the number of teeth normal? 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool.
005D Sensor Right Hand Rear(Signal Disturbed) COMPONENT LOCATION SUDWAB9050L GENERAL DESCRIPTION DTC DESCRIPTION The wheel sensor is crucial for HECU to calculate the speed of the vehicle and determine whether the wheel is in 'Lock' mode or not. For example, in case of a front-wheel drive vehicle, the signal of the rear wheel speed is used as a reference value for the speed of the vehicle. If there occurs the difference in speed between the front and rear wheels, ABS control is performed.
4. Monitor the data "Wheel speed RHR" parameter on the scan tool. MONITOR SCAN TOOL DATA 1. Start the engine. 2. Connect the scan tool to the connector. Select the service data. self-diagnosis ■ Specification: Normal if its speed is nearly in accordance with the speed in the gauge. 3. Drive the vehicle straight at a constant speed in the normal road surface. SUDWAB9008L ▶ Repair as necessary and then go to “Verification of Vehicle Repair” procedure. 5.
Repair” procedure. VERIFICATION OF VEHICLE REPAIR 1. Turn the ignition OFF. After a repair, it is essential to verify that the fault has been corrected. 2. Check the number of teeth on right hand rear tone ring. 1. Connect the scan tool and perform the self diagnosis. Check diagnostic trouble codes. 3. Is the number of teeth normal? 2. Clear the diagnostic trouble codes (DTCs) stored in the ECM by using the scan tool.
