DTC B1A56-12: Antenna - Circuit Short To Battery: Action

NOTE:

This DTC will cause the warning "SOS limited functionality" to be displayed on the instrument cluster
CAUTION: Only on vehicles with secure tracker feature installed
- The Telematics Control Unit Module (TCU) must be placed into service mode before proceeding
- Service mode disables all alert triggers except movement alert, the TCU can be put into service mode in 2 ways:
  - Mobile App - Owner enables service mode
  - Call center - Owner calls and requests that the vehicle be put in service mode
- If the TCU is not set into service mode, then communication to and from the TCU may be lost, which may prevent the vehicle starting
Failure to do so may result in any warranty claim being rejected

Refer to the appropriate service information and check the GSM antenna circuit for short circuit to power. Repair the wiring harness as necessary