Can OBD2 & 1 The Easiest And Best Way To Troubleshoot OBD2 and OBD1 Vehicles! E
Table of Contents Title Page No. INTRODUCTION What is OBD? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . YOU CAN DO IT! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SAFETY PRECAUTIONS Safety First! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ABOUT THE TOOL Battery Installation / Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction WHAT IS OBD? WHAT IS OBD? The OBD2 & 1 Tool is designed to work on most Chrysler, Ford, GM and Toyota OBD1 systems and all OBD2 compliant vehicles. One of the most exciting improvements in the automobile industry was the addition of on-board diagnostics (OBD) on vehicles, or in more basic terms, the computer that activates the vehicle’s “CHECK ENGINE” light. OBD 1 was designed to monitor manufacturer-specific systems on vehicles built from 1981 to 1995.
You Can Do It! EASY TO USE - EASY TO VIEW - EASY TO DEFINE Easy To Use . . . . ■ Connect the Tool to the vehicle’s test connector. ■ Turn the ignition key "On.” ■ Press the POWER/LINK button. Easy To View . . . . ■ The Tool retrieves stored codes, as well as Freeze Frame data and I/M Readiness status (OBD2 systems only). ■ Codes, I/M Readiness status and Freeze Frame data are displayed on the Tool’s LCD display screen. System status is indicated by LED indicators. Easy To Define . . . .
Safety Precautions SAFETY FIRST! SAFETY FIRST! To avoid personal injury, instrument damage and/or damage to your vehicle; do not use the CAN OBD2 Tool before reading this manual. This manual describes common test procedures used by experienced service technicians. Many test procedures require precautions to avoid accidents that can result in personal injury, and/or damage to your vehicle or test equipment.
Safety Precautions SAFETY FIRST! To prevent damage to the on-board computer when taking vehicle electrical measurements, always use a digital multimeter with at least 10 megOhms of impedance. Fuel and battery vapors are highly flammable. To prevent an explosion, keep all sparks, heated items and open flames away from the battery and fuel / fuel vapors. DO NOT SMOKE NEAR THE VEHICLE DURING TESTING. Don't wear loose clothing or jewelry when working on an engine.
About the Tool BATTERY INSTALL / REPLACEMENT / ADJUSTMENTS/SETTINGS & DTC LIBRARY BATTERY INSTALLATION / REPLACEMENT Replace batteries when the battery symbol is visible on display and/or the 3 LEDS are all lit and no other data is visible on screen. 1. Locate the battery cover on the back of the Tool. 2. Slide the battery cover off (use your fingers). 3. Replace batteries with three AA-size batteries (for longer life, use Alkaline-type batteries). 4. Reinstall the battery cover on the back of the Tool.
About the Tool ADJUSTMENTS/SETTINGS AND DTC LIBRARY ■ Unit of Measure: Sets the Unit of Measure for the Tool’s display to USA or metric. Adjustments and settings can be made only when the Tool is NOT connected to a vehicle. To enter the MENU Mode: 1. With the Tool OFF, press and hold the UP button, then press and release the POWER/LINK button. ■ The adjustments and setting MENU displays. 2. Release the UP button.
About the Tool ADJUSTMENTS/SETTINGS AND DTC LIBRARY ■ If you entered a “Manufacturer-Specific” DTC (DTCs that start with “P1” and some “P3”): - The “Select Manufacturer” screen displays. - Use the UP and DOWN buttons, as necessary, to highlight the appropriate manufacturer, then press the ENTER/LD button to display the correct DTC for your vehicle. If a definition for the DTC you entered is not available, an advisory message shows on the Scan Tool’s LCD display. 4.
About the Tool ADJUSTMENTS/SETTINGS AND DTC LIBRARY ■ The Select Language screen displays. ■ The currently selected Language is highlighted. display 2. Press the UP or DOWN button, as necessary, to highlight the desired display language. 3. When the desired display language is highlighted, press the ENTER/FF button to save your changes and return to the MENU. Setting the Unit of Measure 1.
Tool Controls CONTROLS AND INDICATORS CONTROLS AND INDICATORS 11 10 7 8 6 9 1 3 2 4 5 16 12 13 14 15 Figure 1. Controls and Indicators See Figure 1 for the locations of items 1 through 16, below. 1. ERASE button - Erases Diagnostic Trouble Codes (DTCs), and “Freeze Frame” data from your vehicle’s computer, and resets Monitor status. (“Freeze Frame” data and Monitor status are applicable to OBD2 systems only.) 2.
Tool Controls CONTROLS AND INDICATORS 4. ENTER/FREEZE FRAME button - When in MENU mode, confirms the selected option or value. When retrieving and viewing DTCs, displays Freeze Frame data for the highest priority code. (The Freeze Frame function is applicable to OBD2 systems only.) 5. DOWN button - When in MENU mode, scrolls DOWN through the menu and submenu selection options. When retrieving and viewing DTCs, scrolls down through the current display screen to display any additional data. 6.
Tool Controls DISPLAY FUNCTIONS DISPLAY FUNCTIONS 2 1 10 11 12 3 4 5 6 14 15 7 13 8 9 Figure 2. Display Functions See Figure 2 for the locations of items 1 through 16, below. 1. I/M MONITOR STATUS field - Identifies the I/M Monitor status area. (This function is applicable to OBD2 systems only.) 2. Monitor icons - Indicate which Monitors are supported by the vehicle under test, and whether or not the associated Monitor has run its diagnostic testing (Monitor status).
Tool Controls DISPLAY FUNCTIONS 6. Tool Internal Battery icon - When visible, indicates the Tool batteries are “low” and should be replaced. If the batteries are not replaced when the battery symbol is "on", all 3 LEDs will light up as a last resort indicator to warn you that the batteries need replacement. No data will be displayed on screen when all 3 LEDs are lit. 7. DTC Display Area - Displays the Diagnostic Trouble Code (DTC) number.
Tool Controls VIEWING DTCs IN THE TOOL’S MEMORY VIEWING DTCs IN THE TOOL’S MEMORY To view DTC’s and other diagnostic data stored in the Tool’s memory, do the following: 1. With no DLC cable connected to the Tool, press the POWER/LINK button to turn the Tool “on”. 2. Press the ENTER/FF button. 3. Use the and keys to highlight and select your vehicle’s OBD system (OBD1 or OBD2). Press the ENTER/FF button to continue. ■ Select “Back” if you wish to return to the Main Menu. 4.
Preparation for Testing PRELIMINARY VEHICLE DIAGNOSIS WORKSHEET PRELIMINARY VEHICLE DIAGNOSIS WORKSHEET The purpose of this form is to help you gather preliminary information on your vehicle before you retrieve codes. By having a complete account of your vehicle's current problem(s), you will be able to systematically pinpoint the problem(s) by comparing your answers to the fault codes you retrieve.
Preparation for Testing PRELIMINARY VEHICLE DIAGNOSIS WORKSHEET WHEN DID YOU FIRST NOTICE THE PROBLEM: ❑ ❑ ❑ ❑ Just Started Started Last Week Started Last Month Other: LIST ANY REPAIRS DONE IN THE PAST SIX MONTHS: PROBLEMS STARTING ❑ No symptoms ❑ Will not crank ❑ Cranks, but will not start ❑ Starts, but takes a long time ENGINE QUITS OR STALLS ❑ No symptoms ❑ Right after starting ❑ When shifting into gear ❑ During steady-speed driving ❑ ❑ ❑ ❑ IDLING CONDITIONS ❑ No symptoms ❑ Is too slow at all tim
Preparation for Testing PRELIMINARY VEHICLE DIAGNOSIS WORKSHEET AUTOMATIC TRANSMISSION PROBLEMS (if applicable) ❑ No symptoms ❑ Vehicle does not move when in gear ❑ Shifts too early or too late ❑ Jerks or bucks ❑ Changes gear incorrectly PROBLEM OCCURS ❑ Morning ❑ Afternoon ❑ Anytime ENGINE TEMPERATURE WHEN PROBLEM OCCURS ❑ Cold ❑ Warm ❑ Hot DRIVING CONDITIONS WHEN PROBLEM OCCURS ❑ Short - less than 2 miles ❑ With headlights on ❑ 2 - 10 miles ❑ During acceleration ❑ Long - more than 10 miles ❑ Mostly
Preparation for Testing BEFORE YOU BEGIN BEFORE YOU BEGIN The OBD2 & 1 Tool aids in monitoring electronic- and emissions-related faults in your vehicle and retrieving fault codes related to malfunctions in these systems. Mechanical problems such as low oil level or damaged hoses, wiring or electrical connectors can cause poor engine performance and may also cause a fault code to set. Fix any known mechanical problems before performing any test.
Preparation for Testing VEHICLE SERVICE MANUALS VEHICLE SERVICE MANUALS Always refer to the manufacturer’s service manual for your vehicle before performing any test or repair procedures. Contact your local car dealership, auto parts store or bookstore for availability of these manuals.
General Code Retrieval Procedures OBD1 SYSTEMS / OBD2 SYSTEMS Procedures for Retrieving Diagnostic Trouble Codes from OBD1 systems are vehicle manufacturer specific. Each manufacturer uses their own procedure. Procedures for retrieving Diagnostic Trouble Codes from OBD2 systems are generic, and apply to all vehicles equipped with OBD2 systems. From the following list, select the procedure that applies to your vehicle’s OBD system, and proceed to appropriate section for detailed code retrieval procedures.
OBD2 Systems VEHICLES COVERED VEHICLES COVERED The OBD2 & 1 Tool is designed to work on all OBD 2 compliant vehicles. All 1996 and newer vehicles (cars and light trucks) sold in the United States are OBD 2 compliant. Federal law requires that all 1996 and newer cars and light trucks sold in the United States must be OBD 2 compliant; this includes all Domestic, Asian and European vehicles. Some 1994 and 1995 vehicles are OBD 2 compliant.
OBD2 Systems DIAGNOSTIC TROUBLE CODES (DTCs) On some Asian and European vehicles the DLC is located behind the “ashtray” (the ashtray must be removed to access it) or on the far left corner of the dash. If the DLC cannot be located, consult the vehicle’s service manual for the location. DIAGNOSTIC TROUBLE CODES (DTCs) Diagnostic Trouble Codes (DTCs) are meant to guide you to the proper service procedure in the vehicle’s service manual.
OBD2 Systems DIAGNOSTIC TROUBLE CODES (DTCs) OBD 2 DTC EXAMPLE P0201 - Injector Circuit Malfunction, Cylinder 1 B C P U - Body Chassis Powertrain Network 0 1 2 3 - Generic Manufacturer Specific Generic Includes both Generic and Manufacturer Specific Codes P0201 Identifies the system where the problem is located: 1 - Fuel and Air Metering 2 - Fuel and Air Metering (injector circuit malfunction only) 3 - Ignition System or Misfire 4 - Auxiliary Emission Control System 5 - Vehicle Speed Control and Idl
OBD2 Systems CODE RETRIEVAL PROCEDURE CODE RETRIEVAL PROCEDURE Retrieving and using Diagnostic Trouble Codes (DTCs) for troubleshooting vehicle operation is only one part of an overall diagnostic strategy. Never replace a part based only on the DTC definition. Each DTC has a set of testing procedures, instructions and flow charts that must be followed to confirm the location of the problem. This information is found in the vehicle's service manual.
OBD2 Systems CODE RETRIEVAL PROCEDURE ■ If the unit does not power on automatically when connected to the vehicle’s DLC connector, it usually indicates there is no power present at the vehicle’s DLC connector. Check your fuse panel and replace any burned-out fuses. ■ If replacing the fuse(s) does not correct the problem, consult your vehicle’s repair manual to identify the proper computer (PCM) fuse/ circuit, and perform any necessary repairs before proceeding. 5. Turn the ignition on.
OBD2 Systems CODE RETRIEVAL PROCEDURE ■ The Tool will automatically re-link to the vehicle’s computer every 30 seconds to refresh the data being retrieved. When data is being refreshed, the message “One moment Auto – link in progress” is shown on the LCD display. This action repeats as long as the Tool is communicating with the vehicle’s computer. ■ The Tool will display a code only if codes are present in the vehicle’s computer memory.
OBD2 Systems CODE RETRIEVAL PROCEDURE In the case of long code definitions, or when viewing Freeze Frame data, a small arrow is shown in the upper/lower right-hand corner of the code display area to indicate the presence of additional information. Use the and buttons, as necessary, to view the additional information. 9. Read and interpret Diagnostic Trouble Codes/system condition using the LCD display and the green, yellow and red LEDs.
OBD2 Systems CODE RETRIEVAL PROCEDURE ■ Red LED – Indicates there is a problem with one or more of the vehicle’s systems. The red LED is also used to indicate that DTC(s) are present (displayed on the Tool’s screen). In this case, the Multifunction Indicator (Check Engine) lamp on the vehicle’s instrument panel will be illuminated. DTC’s that start with “P0”, “P2” and some “P3” are considered Generic (Universal). All Generic DTC definitions are the same on all OBD2 equipped vehicles.
OBD2 Systems CODE RETRIEVAL PROCEDURE ■ In OBD2 systems, when an emissions-related engine malfunction occurs that causes a DTC to set, a record or snapshot of engine conditions at the time that the malfunction occurred is also saved in the vehicle’s computer memory. The record saved is called Freeze Frame data.
OBD2 Systems ERASING DIAGNOSTIC TROUBLE CODES (DTCs) ■ To prolong battery life, the Tool automatically shuts “Off” approximately three minutes after it is disconnected from the vehicle. The DTCs retrieved, Monitor Status and Freeze Frame data (if any) will remain in the Tool’s memory, and may be viewed at any time by turning the unit “On”. If the Tool’s batteries are removed, or if the Tool is re-linked to a vehicle to retrieve codes/data, any prior codes/data in its memory are automatically cleared.
OBD2 Systems I/M READINESS TESTING 3. Press and release the ERASE button. A confirmation message shows on the LCD display. - If you are sure you want to proceed press the ERASE button again to erase DTCs from the vehicle’s computer. - If you do not want to continue with the erase process, press the POWER/LINK button to exit the erase mode. 4. If you chose to erase DTCs, a progress screen displays while the erase function is in progress.
OBD2 Systems I/M READINESS TESTING Emissions tests vary depending on the geographic or regional area in which the vehicle is registered. If the vehicle is registered in a highly urbanized area, the I/M 240 is probably the type of test required. If the vehicle is registered in a rural area, the stricter “dynamometer type” test may not be required.
OBD2 Systems I/M READINESS TESTING ■ If a Monitor was able to meet all the conditions required to enable it to perform the self-diagnosis and testing of its assigned engine system, it means the monitor "HAS RUN.” ■ If a Monitor has not yet met all the conditions required for it to perform the self-diagnosis and testing of its assigned engine system; it means the Monitor "HAS NOT RUN.” The Monitor Run/Not Run status does not show whether or not a problem exists in a system.
OBD2 Systems I/M READINESS TESTING Monitors with a "Has Run" status indicate that all the required conditions they needed to perform diagnosis and testing of their assigned engine area (system) have been met, and all diagnostic testing has completed successfully. Monitors with a "Has Not Run" status have not yet met the conditions they need to perform diagnosis and testing of their assigned engine area (system), and have not been able to perform diagnostic testing on that system.
OBD2 Systems I/M READINESS TESTING - Some areas require that all Monitors indicate a "Has Run" status before they allow an Emissions Test (Smog Check) to be performed. Other areas only require that some, but not all, Monitors have run their self-diagnostic testing before an Emissions Test (Smog Check) may be performed. From the code retrieval procedure, determine the status of each Monitor (a solid Monitor icon shows Monitor "Has Run" status, a flashing Monitor icon indicates "Has Not Run" status).
OBD2 Systems I/M READINESS TESTING ■ See page 29 for procedures to erase DTCs from the vehicle's onboard computer. ■ Write the codes down on a piece of paper for reference before erasing. 3. After the erase procedure is performed, most of the Monitor icons on the Tool’s LCD display will be flashing.
Chrysler/Jeep OBD1 Systems CHRYSLER/JEEP OBD1 SYSTEMS CHRYSLER/JEEP OBD1 SYSTEMS Chrysler Motors On-Board Computer Systems Chrysler Motors introduced its first electronic fuel injected vehicle in late 1983. The on-board computer management systems used on Chrysler vehicles have evolved over the years, and their names have changed accordingly. 1983-87: The on-board computer used in these vehicles is a splitsystem, composed of two separate units: the Logic Module and the Power Module.
Chrysler/Jeep OBD1 Systems VEHICLES COVERED / PANEL INDICATOR LIGHTS / DLC VEHICLES COVERED This section covers Chrysler fuel injected vehicles from 1983-1995. Type Model Year Model Passenger Cars 1983-1995 Chrysler, Dodge and Plymouth Fuel Injected Models Only (Excluding Lasor/Talon 1.8L, 2.
Chrysler/Jeep OBD1 Systems CODE RETRIEVAL PROCEDURE CODE RETRIEVAL PROCEDURE Retrieving and using Diagnostic Trouble Codes (DTCs) for troubleshooting vehicle operation is only one part of an overall diagnostic strategy. Never replace a part based only on the DTC definition. Each DTC has a set of testing procedures, instructions and flow charts that must be followed to confirm the location of the problem. This information is found in the vehicle’s service manual.
Chrysler/Jeep OBD1 Systems CODE RETRIEVAL PROCEDURE ■ To retrieve DTCs from the vehicle selection currently in the Tool’s memory: - From the “Current Selection/ Select New Vehicle” screen, highlight Current Selection and press the ENTER/FF button. - Proceed to step 5 to continue. ■ To retrieve DTCs from a new vehicle: - From the “Current Selection/ Select New Vehicle” screen, highlight Select New Vehicle and press the ENTER/FF button; the “Select Vehicle Year” menu displays.
Chrysler/Jeep OBD1 Systems CODE RETRIEVAL PROCEDURE ■ If the Tool fails to link to the vehicle’s computer, a “Vehicle is not responding” message shows on the Tool’s LCD display. Do the following: - Verify the ignition is ON. - Check the cable connections at the Tool and at the vehicle’s DLC. - Turn the ignition OFF, wait 10-12 seconds, then turn back ON to reset the computer. - Press the ENTER/FF 6 as necessary. button and repeat steps 4 through 7.
Chrysler/Jeep OBD1 Systems CODE RETRIEVAL PROCEDURE 11. Follow the testing and repair procedures outlined in the vehicle's service repair manual to correct "hard" DTCs. Codes should be addressed and eliminated in the order they were received, erasing (see Erasing DTC's on page 80) and retesting after each repair is made to be sure the fault was eliminated. The green, yellow and red LEDs are used (with the LCD display) as visual aids to make it easier to determine engine system conditions.
Ford OBD1 Systems FORD COMPUTER SYSTEM OVERVIEW - VEHICLES COVERED FORD COMPUTER SYSTEM OVERVIEW The OBD2 & 1 Tool is compatible only with EEC-IV Computer Control systems. IMPORTANT: When the computer is in Self-Test mode (is testing the sensors or actuators for proper operation), it relies on voltage signals that is sends to and / or receives from the sensors or actuators to determine whether or not these components are operating properly.
Ford OBD1 Systems VEHICLES COVERED - CARS 8th VIN Digit** Fuel Systems (Carburetor Model) 5.0L V-8 F, M CFI, SEFI 1.9L I-4 J, 9 EFI, CFI, SFI 2.0L I-4 A SEFI Probe (1993 manual transmission only) 2.
Ford OBD1 Systems VEHICLES COVERED - TRUCKS Engine 8th VIN Digit** Fuel Systems (Carburetor Model) 4.6L V8 DOHC V SFI Mark VIII 5.0L V-8 HO T SFI Mustang 5.0L V-8 SHP D Application/Special Notes Computer System 1995 (Cont) EEC-IV NOTES * Carburetor Model. Carburetor model numbers are usually stamped on top of the carburetor, or on a metal tab attached to the carburetor. Consult your vehicle’s repair manual for proper identification. **VIN Number.
Ford OBD1 Systems VEHICLES COVERED - TRUCKS/VANS 8th VIN Digit** Fuel Systems (Carburetor Model) 3.0L V-6 U EFI, SEFI, SFI 4.0L V-6 X EFI, MFI 4.9L I-6 5.0L V-8 5.8L V-8 Y, H N H, R EFI, MFI, SFI EFI, MFI, SFI EFI, MFI, SFI Bronco, E and F Series Trucks/ Vans (8500 lb. GVW or less only) 7.3L V-8 7.3L V-8 7.5L V-8 M K G Diesel Turbo Diesel EFI, MFI E and F Series Trucks/Vans (Excludes 1994 diesel models) 3.0L V-6 U SFI 4.0L V-6 X SFI 4.
Ford OBD1 Systems TEST CONNECTORS - CONNECTING THE TOOL TEST CONNECTORS Ford vehicles are equipped with special test connectors that make it possible to connect specialized testing equipment that communicates with the vehicle's onboard computer. Ford's vehicle test connectors are usually dark in color (BLACK or GREY). Sometimes they have a plastic cover over them or are labeled EEC Test.
Ford OBD1 Systems DIAGNOSTIC TROUBLE CODES / CODE RETRIEVAL PROCEDURES - OVERVIEW DIAGNOSTIC TROUBLE CODES (DTCs) Diagnostic Trouble Codes, or Fault Codes, can be used to identify engine systems or components that are malfunctioning.
Ford OBD1 Systems CODE RETRIEVAL PROCEDURES - KOEO TEST As described previously, some tests are designed to detect problems only when the vehicle is in normal operation. Some tests are designed to activate components and detect problems only with the Key On and Engine Off. Other tests are designed to activate components and test their operation only with the Key On and Engine Running. Do not take short cuts.
Ford OBD1 Systems CODE RETRIEVAL PROCEDURES - KOEO TEST 5. Turn ignition key OFF and wait for the on screen prompt. If you wish to exit the KOEO test at this time, press the ENTER/FF button. 6. If your vehicle is equipped with one of the following engine types, perform the added procedures described below: ■ For 4.9L engines with standard transmission: Press and hold the clutch until all codes are sent (steps 7 through 9). ■ For 7.
Ford OBD1 Systems CODE RETRIEVAL PROCEDURES - KOEO TEST 9. If the Tool was able to link to the vehicle successfully a "Code retrieval was successful..." message shows temporarily on the Tool's LCD display followed by any retrieved DTCs. ■ The Tool will display a code only if codes are present in the vehicle's computer memory. ■ If no problems are found during the KOEO Self-Test, the computer sends a "PASS" code (code 11 or 111) to the Tool.
Ford OBD1 Systems CODE RETRIEVAL PROCEDURES - ENGINE TIMING CHECK IMPORTANT: DO NOT service "Continuous Memory" codes at this time. Before "Continuous Memory" codes can be serviced, both the KOEO and the KOER Self-Tests must pass (a PASS code 11 or 111 is obtained). After both of these tests have passed, erase the vehicle's computer memory (see Erasing DTCs on page 80), take the vehicle for a short drive, then repeat the KOEO Self-Test.
Ford OBD1 Systems CODE RETRIEVAL PROCEDURES - ENGINE TIMING CHECK ■ A timing light is required to perform this test. ■ The vehicle must pass the KOEO Test (page 48) before performing this test. 1. Locate the vehicle's Data Link Connector (DLC). See Data Link Connector on page 46 for connector location. Some DLCs have a plastic cover that must be removed before connecting the Tool's cable connector. 2.
Ford OBD1 Systems CODE RETRIEVAL PROCEDURES - KOER TEST ■ The vehicle's computer is programmed to advance ignition timing 20° (±3°) above the vehicle's "base timing" value, and to freeze this setting for two minutes from the time the "Perform Timing Check within 2 minutes" message displays. This allows the user to check the computer's ability to advance ignition timing.
Ford OBD1 Systems CODE RETRIEVAL PROCEDURES - KOER TEST ALWAYS observe safety precautions whenever working on a vehicle. Read and follow Safety Precautions on page 3 before performing this test. 1. Locate the vehicle's Data Link Connector (DLC). See Data Link Connector (DLC) on page 46 for connector location. Some DLCs have a plastic cover that must be removed before connecting the Tool cable connector. 2.
Ford OBD1 Systems CODE RETRIEVAL PROCEDURES - KOER TEST 8. After the above procedures are performed a "One moment please KOER test is in progress..." message shows temporarily on the Tool's LCD display, followed by a "Retrieving codes" message. 9. The first code displayed by the Tool is the Cylinder Identification (ID) Code. The Cylinder ID code identifies the number of cylinders of the vehicle that is under test.
Ford OBD1 Systems ADDITIONAL TESTS FOR EEC-IV SYSTEMS - CYLINDER BALANCE TEST ■ See Viewing DTCs in the Tool's Memory on page 13 to view DTCs stored in the Tool's memory. All retrieved DTCs will remain in the Tool's memory. If the KOER Test procedure is performed again, DTC's from a prior test will automatically clear and will be replaced by the most current DTCs retrieved. 12.
Ford OBD1 Systems ADDITIONAL TESTS FOR EEC-IV SYSTEMS - CYLINDER BALANCE TEST SEFI Introduction Sequential Electronic Fuel Injection (SEFI) belongs to a family of fuel injection systems called "Multi-port/Multipoint Fuel Injection". Multiport (MFI) fuel injection systems contain one fuel injector per cylinder, and the vehicle's computer electronically controls their operation. On some multi-port fuel injection systems, the injectors all fire at the same time and at every engine revolution.
Ford OBD1 Systems ADDITIONAL TESTS FOR EEC-IV SYSTEMS - CYLINDER BALANCE TEST 6. When instructed by the message on the Tool's display, start the engine and press the ENTER button. A "One moment please preparation for test is in progress..." message shows temporarily on the Tool's LCD display. 7. When prompted by the message on the Tool's display, lightly press the accelerator pedal half way and release to activate the cylinder balance test. For 1986 models ONLY: Fully press accelerator once and release.
Ford OBD1 Systems ADDITIONAL TESTS FOR EEC-IV SYSTEMS -RELAY AND SOLENOID TEST 11. If a cylinder is not contributing at the same level as the other cylinders, the computer prompts you to repeat the test two more times by displaying the “Lightly press the accelerator half way and release” message again. Each time the message displays, perform the procedures as instructed. 12.
Ford OBD1 Systems ADDITIONAL TESTS FOR EEC-IV SYSTEMS -RELAY AND SOLENOID TEST Use the and buttons, as necessary, to make menu selections. 3. From the Ford EEC-IV System menu, highlight Output State Check, then press the ENTER/FF button. 4. Start and warm-up engine to normal operating temperature. Press the ENTER/FF button to continue. 5. Turn ignition key OFF and wait for the on screen prompt. If you wish to exit the Output State Check at this time, press the ENTER/FF button. 6.
Ford OBD1 Systems ADDITIONAL TESTS FOR EEC-IV SYSTEMS -WIGGLE TEST BE SURE to perform the added procedures in step 6, if appropriate for your vehicle, BEFORE turning the ignition ON. - Press ENTER/FF button to continue. 9. If the Tool was able to link to the vehicle successfully an "Output State check active..." message shows temporarily on the Tool's LCD display. This message is followed by a display that instructs you how to perform the test. 10. Press the accelerator pedal once, then release.
Ford OBD1 Systems ADDITIONAL TESTS FOR EEC-IV SYSTEMS -WIGGLE TEST Circuits Tested: 1984 & Newer - Air Charge Temp Sensor (ACT), Barometer Pressure Sensor (BP), Engine Coolant Temp Sensor (ECT), Exhaust Gas Oxygen Sensor (EGO), EGR Valve Position Sensor (EVP), Manifold Absolute Pressure (MAP), Throttle Position Sensor (TP), Vane Air Temp Sensor (VAT) 1985 & Newer - Vane Air Flow Sensor (VAF) 1986 & Newer - Pressure Feedback EGR Sensor (PFE) 1990 & Newer - Exhaust Gas Oxygen Sensor (EGO), Ignition Diagnosti
Ford OBD1 Systems ADDITIONAL TESTS FOR EEC-IV SYSTEMS -WIGGLE TEST - Turn the ignition ON and start the engine. - Press the ENTER/FF button to continue. 7. A "One moment please test is in progress" message shows temporarily on the Tool’s LCD display. ■ If the Tool fails to link to the vehicle's computer, a "Vehicle is not responding" message shows on the Tool's LCD display. Do the following: For KOEO Wiggle Test: - Verify the ignition is ON.
Ford OBD1 Systems ADDITIONAL TESTS FOR EEC-IV SYSTEMS -WIGGLE TEST 10. Follow the procedures in the vehicle's service repair manual to perform troubleshooting and repairs for Wiggle Test results. 11. The Wiggle Test will stay active as long as desired. To quit the Wiggle Test, turn the ignition OFF and disconnect the Tool from the vehicle.
GM OBD1 Systems YOUR VEHICLE’S COMPUTER SYSTEM - VEHICLES COVERED YOUR VEHICLE'S COMPUTER SYSTEM Today's vehicles are equipped with computer self-testing abilities that can locate problems in your vehicle and store them as Diagnostic Trouble Codes (DTC's) in the vehicle's onboard computer. The Tool allows you access to the computer's memory and retrieves the DTC's.
GM OBD1 Systems ABOUT THE TOOL - DLC - MIL Model Year 1995 Make Model Chevrolet Caprice 4.3 liter Saturn All models Trucks and Vans All one ton capacity or less with gas engines (EXCEPT S/T Series vehicles) In addition to the above list, this Tool IS ALSO COMPATIBLE with OBD1 GM models that are equipped with "Climate Control Computers". For 1994 and 1995 vehicles, only the models listed above are compatible with the Tool.
GM OBD1 Systems DTCs - CODE RETRIEVAL PROCEDURE DIAGNOSTIC TROUBLE CODES (DTC's) The service codes are also called "fault codes", "Diagnostic Trouble Codes" (DTC's) or "trouble codes". These codes can be used to identify systems or components that are malfunctioning.
GM OBD1 Systems CODE RETRIEVAL PROCEDURE Some DLCs have a plastic cover that must be removed before connecting the Tool's cable connector. 2. Connect the Tool cable (with the GM Connector Cable Adaptor attached) to the Tool, then connect the adaptor to the vehicle’s DLC. Press the POWER/LINK button to turn the Tool ON, then press the ENTER/FF button to continue. 3.
GM OBD1 Systems CODE RETRIEVAL PROCEDURE If the “Enter 4th VIN Digit” screen displays (not applicable to all vehicles), highlight the 4th digit of the vehicle’s VIN, then press the ENTER/FF button. - The “Current Selection/Select New Vehicle” screen displays for your confirmation. - If the information shown in the “Current Selection” field is correct, highlight Current Selection,turn ignition key ON (DO NOT start engine) and press the ENTER/FF button. Proceed to step 4 to continue.
GM OBD1 Systems CODE RETRIEVAL PROCEDURE Code 12 will always be present and it has one of the following meanings: ■ If code 12 is the only DTC retrieved and your vehicle "STARTS OK" then code 12 indicates system "PASS" and all computer control systems are functioning properly. ■ If code 12 is present and your vehicle "DOES NOT START", then it may indicate a problem with the ignition control system. 7. Disconnect the Tool from the vehicle and turn the ignition key OFF. 8.
Toyota/Lexus OBD1 Systems ON-BOARD VEHICLE DIAGNOSTICS / VEHICLES COVERED ON-BOARD VEHICLE DIAGNOSTICS (OBD 1) • Beginning in 1988, California's Air Resources Board (CARB), and later, the Federal Government's Environmental Protection Agency (EPA), required vehicle manufacturers to include a self diagnostic program capable of identifying an emissions-related fault via the vehicles On-Board Computers (some manufacturers used OBD before it was required).
Toyota/Lexus OBD1 Systems VEHICLES COVERED Eng. Size Eng. Code DOHC/ SOHC Other DLC Type 1992 Celica Convertible 2.2L 5S-FE DOHC A/T 1 1992 Celica Coupe 1.6L 4A-FE DOHC 1992 Celica Coupe 2.2L 5S-FE DOHC 1993 Celica Coupe 1.6L 4A-FE DOHC 1 1995 Celica Coupe 1.8L 7A-FE DOHC 1 1992 Celica Liftback 2.0L 3S-GTE DOHC 1992 Celica Liftback 2.2L 5S-FE DOHC 1 1993 Corolla Sedan 1.6L 4A-FE DOHC 1 1993 Corolla Sedan 1.8L 7A-FE DOHC 1 1994 Corolla Sedan 1.
Toyota/Lexus OBD1 Systems VEHICLES COVERED Year Model Eng. Size Eng. Code DOHC/ SOHC 3VZ-FE DOHC Other DLC Type Turbo 2 1993 Camry 3.0L 1993 Supra 3.0L 1993 Supra 3.0L 2JZ-GE DOHC 1994 Camry 3.0L 3VZ-FE DOHC 1994 Supra 3.0L 1994 Supra 3.0L 1995 Supra 3.0L 1995 Supra 3.0L 2JZ-GE DOHC 2 1992 SC-300 3.0L 2JZ-GE DOHC 2 1990 ES-250 2.5L 2VZ-FE DOHC 2 1991 ES-250 2.5L 2VZ-FE DOHC 2 1992 ES-300 3.0L 3VZ-FE DOHC 2 1992 SC-400 4.
Toyota/Lexus OBD1 Systems DATA LINK CONNECTOR (DLC) / MIL DATA LINK CONNECTOR (DLC) Toyota vehicles are equipped with special Test Connectors that make it possible to connect specialized testing equipment that communicates with the vehicle's onboard computer. This Tool is designed for use with two types of Toyota DLC connectors; DLC Number 1 and DLC Number 2, as described below. The Tool's Toyota Connector Cable Adaptor is designed to match the vehicle's DLC.
Toyota/Lexus OBD1 Systems DIAGNOSTIC TROUBLE CODES / CODE RETRIEVAL PROCEDURE If your instrument panel indicator lights do not come on when you turn on the ignition, please refer to your vehicle's service manual. You may have problems in the car's circuitry. It is recommended that you fix these problems before retrieving DTCs from your vehicle’s computer. DIAGNOSTIC TROUBLE CODES Diagnostic Trouble Codes, or Fault Codes, can be used to identify engine systems or components that are malfunctioning.
Toyota/Lexus OBD1 Systems CODE RETRIEVAL PROCEDURE Check your vehicle thoroughly before performing any test. See Before You Begin on page 17 for details. ALWAYS observe safety precautions whenever working on a vehicle. See Safety Precautions on page 3 for more information. 1. Locate the vehicle's Data Link Connector (DLC). See Data Link Connector (DLC) on page 74 for connection location. Some DLCs have a plastic cover that must be removed before connecting the Tool's cable connector. 2.
Toyota/Lexus OBD1 Systems CODE RETRIEVAL PROCEDURE 6. If the Tool was able to link to the vehicle successfully a "Code retrieval was successful..." message shows temporarily on the Tool’s LCD display followed by any retrieved DTCs. ■ The Tool will display a code only if codes are present in the vehicle's computer memory. If no codes are present, a "No DTC' are presently stored in the vehicle's computer" message is displayed. 7.
Servicing DTCs SERVICING DTCs - OBD I Retrieving and using Diagnostic Trouble Codes (DTCs) for troubleshooting vehicle operation is only one part of an overall diagnostic strategy. Never replace a part based only on the DTC definition. Each DTC has a set of testing procedures, instructions and flow charts that must be followed to confirm the location of the problem. This information is found in the vehicle's service manual. Always refer to the vehicle's service manual for detailed testing instructions. 1.
Servicing DTCs ■ HISTORY DTC - On some vehicles, the computer will keep a record or history of DTCs that relate to problems that happened in the past but are no longer present. These DTCs will not command the MIL or Check Engine light "On", but the yellow LED will be illuminated. 4. Red LED - Indicates there is a problem with one or more of the vehicle's systems. The red LED is also used to indicate that DTC(s) are present (displayed on the Tool's screen).
Erasing DTCs ERASING DTCs (OBD I SYSTEMS) When the Tool's ERASE function is used to erase DTCs from the vehicle's on-board computer, manufacturer specific data (where applicable) is also erased. If you plan to take the vehicle to a service center for repair, DO NOT erase the codes from the vehicle's computer. If the codes are erased, valuable information that might help the technician troubleshoot the problem will also be erased. Erase DTC’s from the computer’s memory as follows: 1.
Erasing DTCs ■ If the erase was not successful, an advisory message shows on the LCD display. Verify that the Tool is properly connected to the vehicle's DLC and that the ignition is ON. If the erase process still does not complete, turn the ignition OFF, wait 10 seconds, then turn back ON and repeat steps 2 and 3. FORD systems will not display an erase was not successful message.
Glossary GLOSSARY OF TERMS AND ABBREVIATIONS GLOSSARY OF TERMS AND ABBREVIATIONS CARB – California Air Resources Board CCM – Central Control Module Computer Control System – An electronic control system, consisting of an on-board computer and related sensors, switches and actuators, used to ensure peak performance and fuel efficiency while reducing pollutants in the vehicle’s emissions.
Glossary GLOSSARY OF TERMS AND ABBREVIATIONS OBD 2 – On-Board Diagnostics Version 2 (also referred to as “OBD II”) On-Board Computer – The central processing unit in the vehicle’s computer control system. PCM – Powertrain Control Module Pending Code – A code recorded on the “first trip” for a “two-trip” code. If the fault that caused the code to be set is not detected on the second trip, the code is automatically erased.
Notes 84 E OBD2 & 1
Warranty and Servicing LIMITED ONE YEAR WARRANTY The Manufacturer warrants to the original purchaser that this unit is free of defects in materials and workmanship under normal use and maintenance for a period of one (1) year from the date of original purchase. If the unit fails within the one (1) year period, it will be repaired or replaced, at the Manufacturer’s option, at no charge, when returned prepaid to the Service Center with Proof of Purchase. The sales receipt may be used for this purpose.
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