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 wiper HI switch signal or the wiper HI operation request from the rain and light sensor is input, the BCM turns ON the front wiper H/L relay. If the BCM detects an open circuit or a short to ground in the front wiper H/L relay drive circuit, the DTC is set.
Condition for running the DTC
Condition for setting the DTC