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EC-346 < DTC/CIRCUIT DIAGNOSIS > [VK56DE] P0643 SENSOR POWER SUPPLY NG >> Repair or replace ground connections. 2. CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT 1. Disconnect accelerator pedal position (APP) sensor harness connector. 2. Turn ignition switch ON. 3. Check voltage between APP sensor terminal 7 and ground with CONSULT-III or tester. OK or NG OK >> GO TO 5. NG >> GO TO 3. 3. CHECK SENSOR POWER SUPPLY CIRCUITS Check harness for short to power and short to ground, between the following terminals OK or NG OK >> GO TO 4. NG >> Repair short to ground or short to power in harness or connectors. 4. CHECK COMPONENTS Check the following. • EVAP control system pressure sensor (Refer to EC-304, "Component Inspection" .) • Power steering pressure sensor (Refer to EC-339, "Component Inspection" • Battery current sensor (Refer to EC-374, "Component Inspection" .) • Refrigerant pressure sensor. OK >> GO TO 7. NG >> Replace malfunctioning components. 5. CHECK ACCELERATOR PEEDAL POSITION SENSOR EC-427, "Component Inspection" OK or NG OK >> GO TO 7. NG >> GO TO 6. BBIA0361E Voltage: Approximately 5V JMBIA0601ZZ ECM terminal Sensor terminal Reference Wiring Diagram 48 EVAP control system pressure sensor terminal 3 49 Refrigerant pressure sensor terminal 1 Battery current sensor terminal 1 68 Power steering pressure sensor terminal 1 90 APP sensor terminal 7 |