Normal Operation
WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
Under normal operation, the windshield washer pump motor is grounded through internal relays in the wiper motors using circuits CRW14 (BU/WH) and CRW23 (VT/GN). The multi-function switch provides input to the windshield wiper motor through circuit CRW07 (GY/BN) to activate the washer. The windshield wiper motor activates the internal relay and then provides power through circuit CRW14 (BU/WH). When the rear window washer is activated, the multi-function switch provides input to the rear window wiper motor through circuit CRW20 (GY/YE) to activate the washer. The rear window wiper motor activates the internal relay and then provides power through circuit CRW23 (VT/GN).
Possible Causes
- Open or short to ground in circuit CRW07 (GY/BN), CRW14 (BU/WH), CRW20 (GY/YE) or CRW23 (VT/GN)
- Multi-function switch
- Washer pump motor
- Windshield wiper motor
- Rear window wiper motor