Condenser Fan: Description and Operation

Radiator and condenser fan operation is controlled by the radiator fan control module.

The radiator fan control module is supplied battery voltage at all times through fuse 39. When the ignition switch is in its ON (II) or START (III) position, voltage is supplied through fuse 2.

When the ignition switch is in its ON (II) position, battery voltage is also supplied to the radiator fan control module through fuse 8. The module is grounded at G402.

The radiator fan control module can turn ON the condenser fan and radiator fan motors any time during the first 30 minutes after the ignition switch is turned to LOCK (0).

Condenser Fan
Voltage is provided at all times to the condenser fan relay contacts through fuse 34 and the WHT wire.

The radiator fan control module applies voltage to the condenser fan relay coil. The relay is grounded by engine coolant temperature switch A when coolant temperature exceeds 93°C (199°F). The relay is also grounded by the ECM.

Grounding energizes the relay, applying voltage to the condenser fan motor through the WHT wire, the condenser fan relay contacts, and the WHT/GRN wire.