For a complete wiring diagram Refer to Section 8W.When Monitored:With ignition key on. Battery voltage greater than 10 volts.Set Condition:No voltage sensed at the PCM when the ASD is energized or voltage is sensed when the ASD is not energized. One Trip Fault. Three good trips to turn off the MIL.Possible Causes(F342) ASD CONTROL OUTPUT CIRCUIT SHORTED TO VOLTAGE(F342) ASD CONTROL OUTPUT CIRCUIT OPEN(F342) ASD CONTROL OUTPUT CIRCUIT SHORTED TO GROUNDTIPMPCMAlways perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).1. VERIFY ASD DTCDiagnose P0685 - Auto Shutdown Control Circuit first if it set along with this DTC.Turn the ignition on.With a scan tool, select View DTCs.Is the DTC currently Active?YesGo To 2NoRefer to the INTERMITTENT CONDITION Diagnostic Procedure.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)2. EXCESSIVE RESISTANCE IN THE (F342) ASD CONTROL OUTPUT CIRCUIT

Turn the ignition off.Disconnect the C1 PCM harness connector.Disconnect the C5 TIPM harness connector.Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.Measure the resistance of the (F342) ASD Control Output circuit from the C5 TIPM harness connector to the appropriate terminal of special tool #8815.Is the resistance below 5.0 ohms?YesGo To 3NoRepair the excessive resistance in the (F342) ASD Control Output circuit. Inspect the related in-line connectors and splices.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)3. EXCESSIVE RESISTANCE IN THE (F342) ASD CONTROL OUTPUT CIRCUIT

Disconnect the C3 PCM harness connector.Measure the resistance of the (F342) ASD Control Output circuit from the C5 TIPM harness connector to the appropriate terminals of special tool #8815.Is the resistance below 5.0 ohms at each terminal?YesGo To 6NoRepair the open in the (F342) ASD Control Output circuits.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)4. (F342) ASD CONTROL OUTPUT CIRCUIT SHORTED TO GROUND

Measure the resistance between ground and the (F342) ASD Control Output circuit at the C5 TIPM harness connector.Is the resistance below 100 ohms?YesRepair the short to ground in the (F342) ASD Control Output circuit.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoGo To 5 5. (F342) ASD CONTROL OUTPUT CIRCUIT SHORTED TO VOLTAGE

Ignition on, engine not running.Using a voltmeter measure the voltage on the (F342) ASD Control Output circuit in the C5 TIPM harness connector.Is the voltage above 0 volts?YesRepair the short to volage in the (F342) ASD Control Output circuit.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoGo To 6 6. TIPMTurn the ignition off.Connect the C1 and C3 PCM harness connectors and the C5 TIPM harness connector.Ignition on, engine not running.Using the scan tool in the PCM, actuate the ASD.With a 12-volt test light connected to ground, probe the (K51) ASD Control circuit at the C2 TIPM terminal connection.Does the test light illuminate brightly and flash on an off during the actuation?YesBefore continuing, check the TIPM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.If OK, replace the TIPM in accordance with the Service Information.NoGo To 77. PCMBefore continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits.Were there any problems found?YesRepair as necessary.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoReplace and program the Powertrain Control Module per Service Information.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)