A/C Condenser Fan - Operation

OPERATION

The A/C condenser fan used in gasoline engine equipped models is controlled by the Powertrain Control Module (PCM). When the A/C-heater control is set to any A/C position, it sends a request signal on the CAN-B bus to the Totally Integrated Power Module (TIPM), which then transfers the request on the CAN-C Bus to the PCM, which sends a signal on a dedicated hard-wired circuit to the TIPM to energize the internal A/C condenser fan high side driver. When energized, the A/C condenser fan high side driver provides battery current to the condenser fan motor.

The A/C condenser fan control system is diagnosed using a scan tool Testing and Inspection.

The components of the A/C condenser fan cannot be adjusted or repaired and must be replaced as an assembly if inoperative or damaged.