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PCM Controlled Cooling Fan


General Description

All front wheel drive vehicles with transversely mounted engines, use an electric cooling fan. The fan is used for engine coolant and A/C condenser cooling and only operates under certain conditions.


Operation

The electric cooling fan operates when the engine cooling temperature exceeds a certain value. The cooling fan on this engine is controlled by the Powertrain Control Module (PCM). The cooling fan has one speed. The PCM turns the cooling fan ON by grounding the coil of the cooling fan relay when certain conditions are met. When the A/C is requested, the cooling fan will also be turned ON.
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