Grand Cherokee 4WD V8-4.7L (2003)
Radiator Cooling Fan Motor: Testing and Inspection
RADIATOR FAN MOTOR
DIAGNOSIS AND TESTING-ELECTRIC COOLING FAN
The Powertrain Control Module (PCM) will enter a Diagnostic Trouble Code (DTC) in memory if it detects a problem in the auxiliary cooling fan
relay or circuit.
If the electric cooling fan is inoperative, check the 15A fuse in the junction block and the 40A fuse in the Power Distribution Center (PDC) with a 12
volt test lamp or DVOM. Refer to the inside of the PDC cover for the exact location of the fuse. If fuses are okay, refer to cooling fan and relay circuit
schematic.
