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EC-252 < COMPONENT DIAGNOSIS > [VQ40DE] P0447 EVAP CANISTER VENT CONTROL VALVE No >> GO TO 3. 2. CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT
With CONSULT-III 1. Turn ignition switch OFF and then ON. 2. Select “VENT CONTROL/V” in “ACTIVE TEST” mode with CONSULT-III. 3. Touch “ON/OFF” on CONSULT-III screen. 4. Check for operating sound of the valve. Clicking noise should be heard. OK or NG OK >> GO TO 7. NG >> GO TO 3. 3. CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect EVAP canister vent control valve (3) harness con- nector. - Fuel filler pipe (top of frame view) (1) - EVAP control system pressure sensor (2) - EVAP canister (4) - Drain filter (5) - : Vehicle front 3. Turn ignition switch ON. 4. Check voltage between EVAP canister vent control valve termi- nal 1 and ground with CONSULT-III or tester. OK or NG OK >> GO TO 5. NG >> GO TO 4. 4. DETECT MALFUNCTIONING PART Check the following. • Harness connectors E41, C1 • Harness for open or short between EVAP canister vent control valve and IPDM E/R >> Repair harness or connectors. 5. CHECK EVAP CANISTER VENT CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check harness continuity between ECM terminal 117 and EVAP canister vent control valve terminal 2. Refer to Wiring Diagram. 4. Also check harness for short to ground and short to power. OK >> GO TO 7. NG >> GO TO 6. AWBIA0134ZZ Voltage: Battery voltage PBIB0152E Continuity should exist. 2010 Pathfinder |