The front wiper control circuit consists of the windshield wiper switch, rain and light sensor (if equipped), front wiper (ON/OFF) relay, front wiper H/L (high/low) relay, and wiper motor. When the windshield wiper switch signal or windshield washer switch signal is input, the BCM turns ON the front wiper relay. If the BCM detects an open circuit or a short to the power supply in the front wiper relay drive circuit, the DTC is set.
Condition for running the DTC
Condition for setting the DTC