Possible Causes
| Possible Causes |
|---|
| EMERGENCY COMMUNICATION BUTTON SUPPLY CIRCUIT SHORTED TO VOLTAGE OR OPEN |
| OVERHEAD CONSOLE SWITCH |
| BCM |
| GLOBAL TELEMATICS BOX MODULE (TBM2) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .