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DTC P0643 SENSOR POWER SUPPLY EC-489 [VQ35DE] C D E F G H I J K L M A EC Diagnostic Procedure NBS0052L 1. CHECK GROUND CONNECTIONS 1. Turn ignition switch OFF. 2. Loosen and retighten two ground screws on the body. OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. 2. CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT 1. Disconnect accelerator pedal position (APP) sensor (1) harness 2. Turn ignition switch ON. 3. Check voltage between APP sensor terminal 4 and ground with OK or NG OK >> GO TO 5. NG >> GO TO 3. 1. Body ground M70 2. Body ground M16 PBIB2782E PBIB2704E Voltage: Approximately 5V PBIA9606J |