Emissions Control System GENERAL CRANKCASE EMISSION CONTROL SYSTEM POSITIVE CRANKCASE VENTILATION (PCV) VALVE CANISTER PURGE CONTROL SOLENOID VALVE (PCSV) FUEL TANK AIR FILTER FUEL FILLER CAP EXHAUST EMISSION CONTROL SYSTEM CONTINUOUS VARIABLE VALVE TIMING (CVVT) EVAPORATIVE EMISSION CONTROL SYSTEM
EC -2 EMISSIONS CONTROL SYSTEM GENERAL DESCRIPTION ED0CA305 Components Function Remarks Crankcase Emission System Positive Crankcase Ventilation (PCV) valve HC reduction Variable flow rate type Evaporative Emission System Evaporative emission canister Purge Control Solenoid Valve (PCSV) HC reduction HC reduction Duty control solenoid valve Exhaust Emission System MFI system (air-fuel mixture control device) Three-way catalytic converter CO, HC, NOx reduction CO, HC, NOx reduction Heated oxyge
GENERAL COMPONENT LOCATION EC -3 EB6479B1 1 2 6 3 Fuel Tank 1. Purge Control Solenoid Valve (PCSV) 2. PCV Vlave 3. Canister 4. Catalytic Converter (Bank 1) 5. Catalytic Converter (Bank 2) 6.
EC -4 1 EMISSIONS CONTROL SYSTEM 2 Purge Control Solenoid Valve (PCSV) Positive Crankcase Ventilation (PCV) Valve PCV Valve PCSV LGLG001L 3 LELG001G 4 Canister Catalytic Converter (Bank 1) Catalytic Converter (Bank 1) Canister SCMEC6002L 5 LELG001H 6 Catalytic Converter (Bank 2) Fuel Tank Air Filtter Catalytic Converter (Bank 2) Fuel Tank Air Filter LELG001I SCMEC6003L
GENERAL EC -5 SCHEMATIC DIAGRAM E6C3F98F *1. Mass Air Flow Sensor (MAFS) *2. Intake Air Temperature Sensor (IATS) *3. Engine Coolant Tmeperature Sensor (ECTS) *4. Throttle Position Sensor (TPS) *5-1. Camshaft Position Sensor (CMPS) [BANK1] *5-2. Camshaft Position Sensor (CMPS) [BANK2] *6. Crankshaft Position Sensor (CKPS) *7-1. Knock Sensor (KS) #1 *7-2. Knock Sensor (KS) #2 *8-1. Heated Oxygen Sensor (HO2S) [B1/S1] *8-2. Heated Oxygen Sensor (HO2S) [B1/S2] *9-1.
EC -6 EMISSIONS CONTROL SYSTEM CRANKCASE EMISSION CONTROL SYSTEM COMPONENTS EAB892E6 Air intake hose Surge Tank PCV Valve Breather hose During Low Load Operation During High Load Operation Fresh Air LELG001L
CRANKCASE EMISSION CONTROL SYSTEM INSPECTION EE69E0AE 1. Disconnect the ventilation hose from the positive crankcase ventilation (PCV) valve. Remove the PCV valve from the rocker cover and reconnect it to the ventilation hose. 2. Run the engine at idle and put a finger on the open end of the PCV valve and make sure that intake manifold vacuum can be felt. NOTE The plunger inside the PCV valve will move back and forth.
EC -8 EMISSIONS CONTROL SYSTEM POSITIVE CRANKCASE VENTILATION (PCV) VALVE OPERATION EBB0DAB9 Intake manifold side (No vacuum) Intake manifold side (High vacuum) Rocker cover side Rocker cover side BEGE001S BEGE001T Engine condition Not running Engine condition Idling or decelerating PCV valve Not operating PCV valve Fully operating Vacuum passage Restricted Vacuum passage Small Intake manifold side (Moderate vacuum) Intake manifold side (Low vacuum) Rocker cover side Rocker cover sid
CRANKCASE EMISSION CONTROL SYSTEM REMOVAL 1. EB3C969B Disconnect the vacuum hose (A) and remove the PCV valve (B). A B SCMEC6005L INSPECTION EEDF42DC 1. Remove the PCV valve. 2. Insert a thin stick(A) into the PCV valve(B) from the threaded side to check that the plunger moves. 3. If the plunger does not move, the PCV valve is clogged. Clean it or replace. A B EERF600J INSTALLATION E7FA321E Install the PCV valve and tighten to the specified torque. PCV Valve installation : 7.8 ~ 11.
EC -10 EMISSIONS CONTROL SYSTEM EVAPORATIVE EMISSION CONTROL SYSTEM DESCRIPTION passes through vent hoses or tubes to the canister filled with charcoal and the canister temporarily holds the vapor in the charcoal. If ECM determines to draw the gathered vapor into the combustion chambers during certain operating conditions, it will use vacuum in intake manifold to move it. E4D6C1B7 Evaporative Emission Control System prevents fuel vapor stored in fuel tank from vaporizing into the atmosphere.
EVAPORATIVE EMISSION CONTROL SYSTEM EC -11 CANISTER INSPECTION Canister is filled with charcoal and absorbs evaporated vapor in fuel tank. The gathered fuel vapor in canister is drawn into the intake manifold by the ECM/PCM when appropriate conditions are set. 1. Disconnect the vacuum hose from the throttle body, and connect a vacuum pump to the vacuum hose. 2.
EC -12 EMISSIONS CONTROL SYSTEM CANISTER REMOVAL 1. INSPECTION 1. Look for loose connections, sharp bends or damage to the fuel vapor lines. 2. Look for distortion, cracks or fuel damage. 3. After removing the canister, inspect for cracks, damage or saturated canister. E2209E60 Disconnect the vacuum hoses (A,B). E84A19DD A C B A B SCMEC6007L 2. Disconnect the vacuum hose quick-connector (A).
EVAPORATIVE EMISSION CONTROL SYSTEM PURGE CONTROL SOLENOID VALVE (PCSV) INSPECTION ECF3916E NOTE When disconnecting the vacuum hose, make an identification mark on it so that it can be reconnected to its original position. 1. Disconnect the vacuum hose from the solenoid valve. 2. Detach the harness connector. 3. Connect a vacuum pump to the nipple which is connected to intake manifold. 4. Apply vacuum and check when voltage is applied to the PCSV and when the voltage is discontinued. 5.
EC -14 EMISSIONS CONTROL SYSTEM FUEL TANK AIR FILTER REPLACE EDCFC370 1. Remove the rear left wheel house inner cover (Refer to "BD" Group in this WORKSHOP MANUAL). 2. Disconnect the hose (A) connected with the canister and remove the fuel tank air filter (B) from the fillerneck assembly (C).
EVAPORATIVE EMISSION CONTROL SYSTEM FUEL FILLER CAP DESCRIPTION EC -15 seal the fuel filler. After the gasket on the fuel filler cap and the filler neck flange contact each other, the ratchet produces a loud clicking noise indicating the seal has been set. EDD25DE3 A ratchet tightening device on the threaded fuel filler cap reduces the chances of incorrect installation, which would Barometric pressure Fuel vapor pressure Fuel tank vacuum When fuel tank is under pressure.
EC -16 EMISSIONS CONTROL SYSTEM EXHAUST EMISSION CONTROL SYSTEM DESCRIPTION EBA45808 Exhaust emissions (CO, HC, NOx) are controlled by a combination of engine modifications and the addition of special control components. Modifications to the combustion chamber, intake manifold, camshaft and ignition system form the basic control system. These items have been integrated into a highly effective system which controls exhaust emissions while maintaining good driveability and fuel economy.
EXHAUST EMISSION CONTROL SYSTEM EC -17 CONTINUOUS VARIABLE VALVE TIMING (CVVT) DESCRIPTION ECBE8ABD CMPS Intake Camshaft VARIOUS SENSOR After Main Relay RETARD CVVT Retard Chamber PCM CVVT Advance Chamber ADVANCE After Main Relay Housing Vane DRAIN OCV Vane From DRAIN Oil Pump CVVT Housing UEBG013A The CVVT (Continuously Variable Valve Timing) which is installed on the exhaust camshaft controls intake valve open and close timing in order to improve engine performance.
EC -18 EMISSIONS CONTROL SYSTEM reduce the entry of the air/fuel mixture into the intake port and improve the changing effect. Reduces the cam advance at idle, stabilizes combustion, and reduces engine speed. If a malfunction occurs, the CVVT system control is disabled and the valve timing is fixed at the fully retarded position.
