Test I: The Washer Pump Is Inoperative

PINPOINT TEST I: THE WASHER PUMP IS INOPERATIVE

I1:

I1-I3:

I4-I6:

I6-I8:

I9-I11:

I12-I14:

Normal Operation
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