Set Condition

WARNING: This page is about a different car, the 2024 Jeep Grand Cherokee L. However, it is still accessible from the selected car via links, so may be relevant.

The Powertrain Control Module (PCM) controls the Cooling Fan operation by sending a Pulse-Width Modulated (PWM) signal to the Cooling Fan Module to control fan speed. The PCM determines an open or shorted circuit is detected in the Radiator Fan Control circuit.