Question about 2001 Volkswagen Jetta TDI
There should be a cooling fan relay, usually 1 for the engine and 1 for AC (might be labeled as secondary, or accessory.) I would check that next. A working relay will CLICK when activated. The fans are normally told to turn on by the PCM, which receives a signal from the coolant temperature sensor (CTS). It's possible the CTS is not sending the proper signal to the PCM, but I would first check the relays.
Posted on Jul 15, 2010
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Posted on Jan 02, 2017
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