Regal V6-191 3.1L (1991)
Radiator Cooling Fan Motor Relay: Description and Operation
A/C Compressor And Cooling Fan Relays
The electric cooling fan(s) is controlled by the ECM, based on inputs from the coolant temperature sensor, the A/C fan control switch, and vehicle speed.
The ECM controls the fan by grounding circuit 335 and/or circuit 473 which energizes the fan control relay. Battery voltage is then supplied to the fan
motor.
