1755-01

1755-01 NO COMMUNICATION FROM HVAC, SHORT TO BATTERY, OR TIMEOUT





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 Instrument Cluster Circuit Diagram,Schematics and Diagrams.

Diagnostic Test

1. MEASURE THE VOLTAGE OF THE SERIAL COMMUNICATION K2 CIRCUIT




Turn the ignition off.
Disconnect the Instrument Cluster harness connector.
Disconnect the A/C Heater Control Module harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Turn the ignition on.
Measure the voltage of the Serial Communication K2 circuit.
Is the voltage above 5.0 volts?

Yes

- Repair the Serial Communication K2 circuit for a short to voltage.
- Perform BODY VERIFICATION TEST. Body Verification Test

Yes

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