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P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR EC-1337 < COMPONENT DIAGNOSIS > [VQ35DE] C D E F G H I J K L M A EC N P O Is the inspection result normal? YES >> GO TO 6. NO >> GO TO 5. 5. DETECT MALFUNCTIONING PART Check the following. • Harness connectors B10, E29 • Harness for open or short between EVAP control system pressure sensor and ECM >> Repair open circuit. 6. CHECK SENSOR POWER SUPPLY CIRCUIT Check harness for short to power and short to ground, between the following terminals. Is the inspection result normal? YES >> GO TO 7. NO >> Repair short to ground or short to power in harness or connectors. 7. CHECK COMPONENTS Check the following. • Crankshaft position sensor (POS) (Refer to EC-1295, "Component Inspection" .) • Refrigerant pressure sensor (Refer to EC-1503, "Diagnosis Procedure" Is the inspection result normal? YES >> GO TO 8. NO >> Replace malfunctioning components. 8. CHECK APP SENSOR EC-1450, "Component Inspection" . Is the inspection result normal? YES >> GO TO 15. NO >> GO TO 9. 9. REPLACE ACCELERATOR PEDAL ASSEMBLY 1. Replace accelerator pedal assembly. 2. Refer to EC-1450, "Special Repair Requirement" . >> INSPECTION END 10. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between EVAP control system pressure sensor harness connector and ECM har- ness connector. EVAP control system pressure sensor ECM Continuity Connector Terminal Connector Terminal B41 3 E10 91 Existed ECM Sensor Connector Terminal Name Connector Terminal F13 72 Refrigerant pressure sensor E219 1 76 CKP sensor (POS) F30 1 E10 87 APP sensor E40 6 91 EVAP control system pressure sensor B41 3 |