Electric Cooling Fan System Testing: Conquest
- With ignition on and engine coolant temperature greater than 185°F (85°C), thermosensor No. 1 completes the ground. This closes the contacts on radiator fan motor relay No. 1 and provides current to the radiator fan motor No. 1.
- When engine coolant temperature reaches 212°F (100°C), thermosensor No. 2 completes the ground, closing the contacts on radiator fan motor relay No. 2 and provides current to the radiator fan motor No. 2. See Fig 1.
Courtesy of CHRYSLER MOTORS.