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P0689-AUTO SHUTDOWN RELAY SENSE CIRCUIT LOW (CONTINUED) 3. (A955) ASD RELAY OUTPUT CIRCUIT OPEN Disconnect the C1 FCM harness connector. Measure the resistance of the (A955) ASD Relay Output circuit from the Relay terminal to the C1 FCM harness Is the resistance below 5.0 ohms? Yes >> Go To 4 No >> Repair the open in the (A955) ASD Relay Output circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 4. (A955) ASD RELAY OUTPUT CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (A955) ASD Relay Output circuit at the Relay terminals. Is the resistance below 100 ohms? Yes >> Repair the short to ground in the (A955) ASD Relay Control circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 5 5. ASD RELAY Measure the resistance of the ASD Relay Coil between terminals 86 and 85. Is the resistance between 60 and 80 ohms? Yes >> Go To 6 No >> Replace the ASD Relay. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 6. PCM NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal Were there any problems found? Yes >> Repair as necessary. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Replace and program the Powertrain Control Module per Service Information. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) HB ENGINE ELECTRICAL DIAGNOSTICS 9 - 723 |