Possible Causes
| Possible Causes |
|---|
| LOSS OF COMMUNICATION WITH THE PCM OR MULTIPLE BUS PROBLEMS |
| HVAC MODULE |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .
| Possible Causes |
|---|
| LOSS OF COMMUNICATION WITH THE PCM OR MULTIPLE BUS PROBLEMS |
| HVAC MODULE |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .