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2. ACCELERATOR PEDAL POSITION SENSOR CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the Accelerator Pedal Position Sensor harness connector. Disconnect the Engine Control Module (ECM) harness connector. Remove the Main Relay. Connect a jumper wire between cavity B7 and cavity B9 of the Main Turn the ignition on. Measure the voltage of the (K852) Accelerator Pedal Position Sensor 1 Measure the voltage of the (K23) Accelerator Pedal Position Sensor 1 Measure the voltage of the (K167) Accelerator Pedal Position Sensor 1 Is there voltage present on any of the circuits? Yes >> Repair the appropriate circuit that has voltage present. Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) No >> Go to 3 3. (K23) ACCELERATOR PEDAL POSITION SENSOR 1 SIGNAL CIRCUIT SHORTED TO THE 5 VOLT Turn the ignition off. Measure the resistance between the (K23) Accelerator Pedal Position Measure the resistance between the (K23) Accelerator Pedal Position Is the resistance above 10.0 ohms for both of the circuits? Yes >> Go to 4 No >> Repair the shorted (K23) Accelerator Pedal Position Sensor 1 Signal circuit. Perform the ECM Verification Test Ver. 1. (Refer to 9 - PM ENGINE ELECTRICAL DIAGNOSTICS - DIESEL 9 - 1347 |