G 20 Van V6-262 4.3L VIN Z (1993)
Radiator Cooling Fan Motor: Description and Operation
Vehicles equipped with the 7.4L gasoline engine and air conditioning are also equipped with an auxiliary cooling fan that helps to maintain cool
engine operating temperatures when the vehicle is in heavy traffic or under heavy loads.
Battery voltage is available to the cooling fan relay at all times from the (RST) (2) flusible link. Ignition voltage is available to the relay coil whenever
the ignition switch is in START or RUN. The auxiliary Cooling Fan Control Temperature Switch closes whenever coolant temperature gets to high. This
completes a ground path for the relay coils and the relay switch closes providing battery voltage to the Fan Motor.
