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Windshield Washer Control Module: Description and Operation

DESCRIPTION

Washer Control - The multi-function switch control knob provides a momentary WASH position for washer system operation.

OPERATION

Washer Control - The control knob on the end of the multi-function switch control stalk is depressed towards the steering column to momentarily activate the washer pump in the WASH mode. The washer pump will continue to operate in the washer mode until the control knob is released or for 10 continuous seconds, whichever occurs first. The multi-function switch provides an output to the EMIC, and the EMIC responds by sending electronic washer switch status messages to the FCM over the CAN data bus. The FCM responds by energizing or de-energizing the washer pump in the washer mode.