DTC B1D25-12: Heater Fuel Pump - Circuit short to battery: Action
NOTE:
To check the operation of the fuel fired booster heater, perform routine - Auxiliary Heater (AHCM) Activation Test (0x900A). Repeat the routine if excessive smoke is emitted from the fuel fired booster heater exhaust.
- Refer to the appropriate system wiring diagrams and check the fuel fired booster heater fuel pump circuit for short circuit to power. Repair the wiring harness as necessary