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EC-366 < COMPONENT DIAGNOSIS > [VQ40DE] P2122, P2123 APP SENSOR Diagnosis Procedure INFOID:0000000004297607 1. CHECK GROUND CONNECTIONS 1. Turn ignition switch OFF. 2. Loosen and retighten three ground screws on the body. Refer to OK or NG OK >> GO TO 2. 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 2 and ground with OK or NG OK >> GO TO 3. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 3. CHECK APP SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check harness continuity between APP sensor terminal 4 and ECM terminal 82. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 4. CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between ECM terminal 106 and APP sensor terminal 3. BBIA0539E Voltage: Approximately 5V BBIA0556E PBIB2608E Continuity should exist. 2009 Pathfinder |