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P0685-AUTO SHUTDOWN RELAY CONTROL CIRCUIT (CONTINUED) For the Engine circuit diagram (Refer to 9 - ENGINE - SCHEMATICS AND DIAGRAMS). For a complete wiring diagram Refer to Section 8W. • When Monitored: • Set Condition: Possible Causes (A922) FUSED B+ CIRCUITS (K51) ASD RELAY CONTROL CIRCUIT OPEN (K51) ASD RELAY CONTROL CIRCUIT SHORTED TO GROUND ASD RELAY PCM Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - Diagnostic Test 1. ASD RELAY OPERATION Ignition on, engine not running. With a scan tool, actuate the ASD Relay. Is the ASD Relay operating? Yes >> Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 2 2. (A922) FUSED B+ CIRCUITS Turn the ignition off. Remove the ASD Relay from the IPM. Using a 12-volt test light connected to ground, probe the (A922) Fused B+ circuits in the IPM. Does the test light illuminate brightly? Yes >> Go To 3 No >> Repair the open or short to ground in the (A922) Fused B+ circuits. Inspect and replace any open fuses. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 3. ASD RELAY Measure the resistance of the ASD Relay Coil. Is the resistance between 60 to 80 ohms? Yes >> Go To 4 No >> Replace the ASD Relay. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) HB ENGINE ELECTRICAL DIAGNOSTICS 9 - 715 |