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Drivers side cooling fan.


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The drivers side cooling fan on my 1997 Boxster does not activate when the A/C is turned on. Passenger side seems ok.

Removed fan and put 12v to the terminals and it works. Pulled apart the connector and I have 12v at the plug to fan.

What is the small cylinderical switch wired into the circuit that is located in the air duct to the fan? Rheostat of some sort? What is the function

of this switch? I have read that both cooling fans should be on high when the A/C is turned on.

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