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Home >> Chrysler >> 2005 >> 300 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 112 (Body Diagnostic Procedures) >> System Description And Functional Operation >> Front Control Module >> Relay Controls >> Front wiper high/low relay

Front wiper high/low relay

WARNING: This page is about a different car, the 2003 Dodge Grand Caravan, 2003 Dodge Caravan, 2003 Chrysler Voyager, and 2003 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.

The front wiper switch is a direct input to the BCM. The BCM sends a PCI Bus message to the FCM informing it to turn on the front wiper high/low relay. The relay switches power between the low speed and high speed windings of the wiper motor. The front wiper high/low relay is powered through low side control on pin 34 of the FCM. This circuit is electronically controlled and continuously monitored for malfunctions.

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