DTC B12A6-11: Auxiliary Heater Water Pump - Circuit short to ground: Action
- Refer to the applicable system wiring diagram(s) and check the auxiliary coolant pump circuit - Circuit reference AUX_WATER_PUMP - For short circuit to ground. Repair wiring harness as required, clear the DTC and retest the system
- If no wiring faults are present, check and install new air conditioning water pump as required. Clear DTC and retest