Quote:
Originally Posted by BrettS
I just ran the car down the road and back. I got Also (perhaps related?)
the aux. fan will not come on at all now (even with the engine temp. sensor unplugged).
-Brett
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The coolant temp sensor (really a switch), in my car has 3 pins. Only one pin connects to the Klima relay, one is ground, and the third one connects to the aux fan relay. If you disconnect all three, the aux fan relay will not work and so your fan would not work on high speed. When the temp is high, then the switches close, so disconnection works to fool the Klima relay BUT disconnection for the aux fan relay actually will break the current path of the relay coil.