1422-00

1422-00 NO COMMUNICATION FROM INSTRUMENT CLUSTER





- When Monitored: With the ignition on.

- Set Condition: Serial Communication K1 failure between the A/C Heater Control Module and the Instrument Cluster.





Diagnostic Test

1. MEASURE THE RESISTANCE OF THE SERIAL COMMUNICATION K1 CIRCUIT





Turn the ignition off.

Disconnect the Instrument Cluster harness connector.

NOTE: Check connector - Clean/repair as necessary.

Disconnect the A/C Heater Control Module harness connector.

NOTE: Check connector - Clean/repair as necessary.

Measure the resistance of the Serial Communication K1 circuit from the Instrument Cluster harness connector to the A/C Heater Control Module harness connector.

Is the resistance below 5.0 ohms?

Yes

- Replace the A/C Heater Control Module.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Repair the Serial Communication K1 circuit for an open.
- Perform BODY VERIFICATION TEST. Body Verification Test