Component Description

Low Washer Fluid Level Sensor 

The low washer fluid level sensor is a reed type switch. The float assembly uses a magnet to close the contacts on the switch. 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 float drops, opening the switch and sending the reference voltage high. When the washer fluid level is high, the float lifts off the switch and closes the circuit to the BCM pulling the reference voltage low. The BCM monitors the washer fluid level and provides the washer fluid level low message to the IPC.

Steering Wheel Switch - Message Center 

The message center switch is the upper LH steering wheel switch and is comprised of 5 buttons. The message center switch uses different resistance values associated with each specific button. The IPC sends out a reference voltage to the upper LH steering wheel switch on the input circuit and monitors the voltage drops. The voltage drop varies depending upon the resistance of the specific button pressed, providing indication to the IPC which button is pressed.