1000 - 1999: 1459

1459-00 NO COMMUNICATION TO INSTRUMENT CLUSTER





When Monitored and Set Condition

- When Monitored: With the ignition on.
- Set Condition: Serial Communication K2 failure between the A/C Heater Control Module and the Instrument Cluster.





For a complete HVAC Circuit Diagram, HVAC Schematics and Diagrams.

Diagnostic Test

1. MEASURE THE RESISTANCE OF THE SERIAL COMMUNICATION K2 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 K2 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. Removal.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Repair the Serial Communication K2 circuit for an open.
- Perform BODY VERIFICATION TEST. Body Verification Test