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P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR EC-385 < DTC/CIRCUIT DIAGNOSIS > [MR FOR NISMO RS MODELS] C D E F G H I J K L M A EC N P O Is the inspection result normal? YES >> GO TO 5. NO >> Repair or replace error-detected parts. 5. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR SIGNAL CIRCUIT 1. Check the continuity between EVAP control system pressure sensor harness connector and ECM har- ness connector. 2. Also check harness for short to ground and to power. YES >> GO TO 6. NO >> Repair or replace error-detected parts. 6. CHECK RUBBER TUBE 1. Disconnect rubber tube connected to EVAP canister vent control valve. 2. Check the rubber tube for clogging. YES >> GO TO 7. NO >> Clean the rubber tube using an air blower, repair or replace rubber tube. 7. CHECK EVAP CANISTER VENT CONTROL VALVE EC-370, "Component Inspection" Is the inspection result normal? YES >> GO TO 8. NO >> Replace EVAP canister vent control valve. Refer to (AWD). 8. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR EC-386, "Component Inspection" Is the inspection result normal? YES >> GO TO 9. NO >> Replace EVAP control system pressure sensor. Refer to (2WD), (AWD). 9. CHECK IF EVAP CANISTER IS SATURATED WITH WATER 1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached. 2. Check if water will drain from the EVAP canister. YES >> GO TO 10. NO >> Check intermittent incident. Refer to 10. CHECK EVAP CANISTER Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached. + − Continuity EVAP control system pres- sure sensor ECM Connector Terminal Connector Terminal B22 2 F25 15 Existed PBIB1213E |