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4. (K23) ACCELERATOR PEDAL POSITION SENSOR NO. 1 SIGNAL CIRCUIT SHORTED TO THE SENSOR Measure the resistance between the (K23) Accelerator Pedal Position Measure the resistance between the (K23) Accelerator Pedal Position Is the resistance between ground and both of the circuits Yes >> Go to 5 No >> Repair the appropriate circuit for a short to ground. Perform the ECM Verification Test Ver. 1. (Refer to 9 - 5. ACCELERATOR PEDAL POSITION SENSOR Turn the ignition off. Remove the jumper wire and install the ASD Relay. Connect the Engine Control Module (ECM) connector. Connect a jumper wire between the (F855) Accelerator Pedal Position Turn the ignition on. With the scan tool, Clear DTCs. Fully depress and release the Accelerator Pedal several times. With the scan tool, select View DTCs. NOTE: The scan tool should display an Accelerator Pedal Position Does the scan tool display the DTC as described above? Yes >> Replace the Accelerator Pedal Position Sensor in accordance with the Service Information. Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) No >> Go to 6 9 - 1680 ENGINE ELECTRICAL DIAGNOSTICS - DIESEL LX |