Cooling System: Description and Operation

OPERATION
The Powertrain Control Module (PCM) (12A650), receives information from the Engine Coolant Temperature (ECT) sensor (12A648) and uses this information to control the engine cooling fan system.

SUBSYSTEMS
^ Engine Coolant Temperature (ECT) sensor.
^ Low fan control relay.
^ High cooling fan control relay 2.
^ High cooling fan control relay 1.
^ Powertrain Control Module (PCM).