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2. ACCELERATOR PEDAL POSITION SENSOR CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the Accelerator Pedal Position Sensor connector. Disconnect the Engine Control Module (ECM) connector. Remove the ASD Relay from the IPM. Connect a jumper wire between cavity 30 and cavity 87 of the ASD Turn the ignition on. Measure the voltage of the (F855) Accelerator Pedal Position Sensor Measure the voltage of the (K23) Accelerator Pedal Position Sensor No. Measure the voltage of the (K167) Accelerator Pedal Position Sensor 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 NO. 1 SIGNAL CIRCUIT SHORTED TO THE 5 VOLT Turn the ignition off. Disconnect the Engine Control Module (ECM) connector. 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 No. 1 Signal circuit. Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) 9 - 1684 ENGINE ELECTRICAL DIAGNOSTICS - DIESEL LX |