Radiator Cooling Fan Motor: Description and Operation
WARNING: THE ENGINE ELECTRIC COOLING FAN MOTOR MAY COME ON AT ANY TIME WITHOUT WARNING WITH THE IGNITION SWITCH IN THE RUN POSITION, EVEN IF THE ENGINE IS NOT RUNNING.The fan control system consists of the following:
- Powertrain Control Module (PCM)
- related wiring
- two, two-speed cooling fan motors attached to a fan shroud located behind the radiator
- powertrain control module
- A/C cycling switch
- A/C clutch coil circuit
- cooling fan motors
The cooling fan motors are wired to operate only when ignition switch is in the RUN position, thereby preventing radiator electric motor operation after the ignition switch is turned to the OFF position.