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HVAC Module DTC Chart

NOTE: Only DTCs related to the heated seat system are listed. For all other HVAC module DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES .
HVAC MODULE DTC CHART

DTC Description Action
B12AB Drivers Heated Seat Relay Drive Circuit Shorted to Battery Voltage GO to PINPOINT TEST B .
B12AC Drivers Heated Seat Relay Drive Circuit Open or Shorted to Ground If the driver heated seat does not heat, GO to PINPOINT TEST B .
If the driver heated seat will not shut off, GO to PINPOINT TEST D .
B12AD Passenger Heated Seat Relay Drive Circuit Shorted to Battery Voltage GO to PINPOINT TEST C .
B12AE Passenger Heated Seat Relay Drive Circuit Open or Shorted to Ground If the passenger heated seat does not heat, GO to PINPOINT TEST C .
If the passenger heated seat will not shut off, GO to PINPOINT TEST D .
All Other DTCs - REFER to MULTIFUNCTION ELECTRONIC MODULES .
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