Condenser Fan: Description and Operation

Circuit Description
The Powertrain control module (PCM) controls the operation of the radiator fan and the condenser fan. The control module monitors coolant temperature through engine coolant temperature sensor. The module also monitors A/C operation through the A/C ON input, A/C signal input and A/C pressure switch input.

Using these signal inputs, the module will ground the coil of the appropriate relays to provide optimal fan operation.