Wiper and Washer Systems: Description and Operation

WIPERS AND WASHERS

The wipers and washers system consists of the following:
- Windshield wiper blade
- Windshield wiper pivot arm
- Windshield wiper mounting arm and pivot shaft
- Windshield wiper motor
- Windshield washer reservoir
- Windshield (2-way) washer pump
- Check valves (integral to the washer pump)
- Multi-function switch
- Rear window wiper blade
- Rear window wiper arm
- Rear window wiper motor

The wiper system is activated by the multi-function switch. The multi-function switch provides input to the front wiper motor module to activate wash, low, high and intermittent modes. The multi-function switch also provides input to the rear wiper module to activate wash, INT 1 and INT 2 modes. The relays are all integral to the wiper motor module assemblies and are not serviceable separately.

The front and rear washer system share the same washer reservoir and washer pump. The front and rear wiper motor module integral electronics control the direction of the washer pump to direct washer fluid to the windshield or rear window.

NOTE: The smart junction box (SJB) may also be identified as the generic electronic module (GEM).

If equipped with automatic headlamps, the SJB will illuminate the exterior lamps, including the parking lamps, when the front wipers are on for more than 3 seconds and the headlamp control is in the AUTOLAMP position. When the wipers are turned off, the exterior lamps will remain on for 30 seconds before turning off.