Breeze L4-2.0L VIN C (1997)
Radiator Cooling Fan Motor: Testing and Inspection
CONTROL
Fan control is accomplished three ways.
Turned On With A/C
The fan runs when the air conditioning pressure reaches a set psi.
Coolant Temperature
In addition to this control, the fan is turned on by the temperature of the coolant which is sensed by the coolant temperature sensor which sends the
message to the Engine Controller. The Engine Controller turns on the fan through the fan relay.
Transmission Fluid Temperature
On models equipped with automatic transmission, a transmission fluid thermistor may have some influences on fan operation.
POWER TRAIN CONTROL MODULE INPUT
The Power Train Control Module (PCM) provides fan control for the following conditions:
^
The fan will not run during cranking until the engine starts no matter what the coolant temperature is.
^
Fan will run when the air conditioning clutch is engaged, low pressure cutout switch is closed and once set compressor head pressure is
reached.
^
Fan will run according to the chart in above image.
