Front washer motor
The front washer switch is a direct input to the BCM. The BCM sends a PCI Bus message to the IPM informing it of a request to wash. The front washer motor is then powered through high side control inside the IPM. This circuit is electronically controlled and continuously monitored for malfunctions. In addition, the IPM electronically protects the washer motor from system voltages higher than 16 volts by automatically switching off the high side circuit.