Heater Cores and Blower Fans
Ford Escort LX
New Electrical Work

Where does the power wire from the fan motor on a 1994 Ford Escort LX connect to the fan control switch?

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2011-09-15 10:45:35
2011-09-15 10:45:35

There is no fan control switch, and no direct connection to any sensor or switch on that vehicle. The system works like this. The computer(PCM) decides when to turn on the fan. The PCM looks at engine temperature from the ECT sensor, and AC input from the AC control head switches. When the PCM decides that you need the cooling fan to come on, it uses the cooling fan relay, and the cooling fan high speed relay to turn on the fan, and whether it should run at low speed, or high speed. The power input to the cooling fan comes from the cooling fan relays.

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