|
it might be easier to repair than re-create. Try troubleshooting in this way...
1. With ignition on, touch sensor wire to ground. Fan should turn on.
If it does, the sensor is bad, replace.
If not check the fan motor next by jumpering directly to the battery.
If the fan works the problem is one of three items, the relay, the fuse or the wiring...
Check fuse first... duh
Checking relay is a little more dificult, maybe you have a known good spare to swap in... Hopefully this fixes it.
And lastly, if a known good relay doesn't fix it, start looking at your wiring for obvious signs of damage.
At this point you should know if the the fan, sensor, relay, fuse and wiring are good or not, and the culprit.
|