Component Description

Wiper/Washer Switch 

The wiper/washer switch is mounted directly to the SASM. The windshield wiper/washer inputs to the SASM are:

• Mist wipe
• Windshield wash
• Off
• AUTO 1/INT 1
• AUTO 2/INT 2
• AUTO 3/INT 3
• AUTO 4/INT 4
• AUTO 5/INT 5
• AUTO 6/INT 6
• Low
• High

The rear wiper/washer inputs to the SASM are:

• Off
• INT 1
• INT 2 (continuous wipe)
• Rear window wash

Front Wiper Motor 

The windshield wiper motors contains a logic module, internal sensors (to monitor the wiper arm position) and a multi-speed motor. The logic module from the driver side windshield wiper motor continuously monitors the wiper/washer switch inputs from the BCM when the ignition is ON. Depending on the input, the wiper motor activates to achieve the desired request.

The driver side windshield wiper motor is the primary wiper motor and controls the operation of both windshield wipers.

There is no mechanical linkage between the motor and the wiper arm, the wiper arms are mounted directly to the wiper motors.

If a windshield wiper motor is replaced, the windshield wiper motors must be initialized. REFER to: Windshield Wiper Motor Initialization 

Washer Pump 

The washer pump is controlled by the BCM. The front and rear washer system share the same washer reservoir and a bi-directional washer pump. The washer pump delivers washer fluid to the windshield when the BCM activates the windshield washer relay (internal to the BCM), which provides voltage to the washer pump. Ground for the washer pump is provided through the rear washer relay (also internal to the BCM). When activated, the washer pump delivers washer fluid to the windshield.

When the BCM energizes the rear washer relay, the rear washer relay provides voltage to the washer pump. Ground for the washer pump is provided through the windshield washer relay (internal to the BCM). When activated, the pump delivers washer fluid to the rear window.

Rear Wiper Motor 

The rear window wiper motor contains a single speed motor. When the BCM momentarily energizes the rear window wiper motor relay, the rear window wiper activates. A separate power circuit is used to continue the rear window wipe and park the rear window wiper.