Stratus L4-2.4L DOHC (1995)
Radiator Cooling Fan Motor Relay: Description and Operation
High Speed Fan Control Relay Circuit
NAME OF CODE:
High Speed Fan Control Relay Circuit
WHEN MONITORED:
With the ignition key ON and battery voltage greater than 10 volts.
SET CONDITION:
An open or shorted condition is detected in the high speed radiator fan relay control circuit.
THEORY OF OPERATION:
The high speed radiator fan relay controls the high speed operation of the radiator fan.
The relay is located in the power distribution center.
One side of the relay control coil is supplied with 12 volts when the ignition switch is turned to the "RUN" position. The circuit is completed when
the other side of the relay coil is grounded by the powertrain control module (PCM). The PCM grounds the relay control circuit depending on
coolant temperature.
The PCM grounds the relay circuit when the engine coolant temperature is too high and removes the ground when the temperature is acceptable
POSSIBLE CAUSES:
-
Relay coil open or shorted
-
Fused ignition switch output circuit open
-
High speed radiator fan relay control circuit open or shorted
-
Inoperative circuit driver in PCM
