Low Washer Fluid Level Sensor

The low washer fluid sensor is hardwired to the BCM through a single signal wire and is grounded to a body ground through a separate circuit. The BCM provides a battery reference voltage to the low washer fluid level sensor. When the washer fluid level is low, the sensor opens to ground sending the reference voltage high. When the washer fluid level is high, the sensor increases resistance on the circuit to the BCM sending the reference voltage low.