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EC-284 < COMPONENT DIAGNOSIS > [VQ40DE] P0456 EVAP CONTROL SYSTEM 2. Does water drain from the EVAP canister? Yes >> GO TO 10. No (With CONSULT-III)>>GO TO 12. No (Without CONSULT-III)>>GO TO 13. 10. CHECK EVAP CANISTER Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached. The weight should be less than 2.0 kg (4.4 lb). OK or NG OK (With CONSULT-III)>>GO TO 12. OK (Without CONSULT-III)>>GO TO 13. NG >> GO TO 11. 11. DETECT MALFUNCTIONING PART Check the following. • EVAP canister for damage • EVAP hose between EVAP canister and vehicle frame for clogging or poor connection >> Repair hose or replace EVAP canister. 12. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
With CONSULT-III 1. Disconnect vacuum hose connected to EVAP service port and EVAP canister purge volume control sole- noid valve from EVAP canister purge volume control solenoid valve. 2. Start engine. 3. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode. 4. Touch “Qu” on CONSULT-III screen to increase “PURG VOL CONT/V” opening to 100%. 5. Check vacuum hose for vacuum when revving engine up to 2,000 rpm. OK >> GO TO 16. NG >> GO TO 14. 13. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
Without CONSULT-III 1. Start engine and warm it up to normal operating temperature. 2. Stop engine. 3. Disconnect vacuum hose connected to EVAP service port and EVAP canister purge volume control sole- noid valve from EVAP canister purge volume control solenoid valve. 4. Start engine and let it idle for at least 80 seconds. 5. Check vacuum hose for vacuum when revving engine up to 2,000 rpm. OK or NG OK >> GO TO 15. NG >> GO TO 14. 14. CHECK VACUUM HOSE Check vacuum hoses for clogging or disconnection. Refer to . OK or NG OK >> GO TO 15. BBIA0558E Vacuum should exist. 2010 Pathfinder |