My van fans wont run unless you unplug the coolant temperature sensor. Here is what I have done so far:
Replaced relay behind bumper.
Checked all other fuses and relays.
Replaced coolant temperature sensor twice.
Replaced pressure transducer.
I have checked all wires at relay. I have power, ground and signal.
The fans will run when I jump the relay harness.
The fans will run when you unplug the coolant temperature sensor.
The fans will not run when AC is on.
The fans will not run when the engine reaches the temperature in which the fans should turn on.
Monday, December 21st, 2020 AT 9:48 AM