Test Y

PINPOINT TEST Y: THE WASHER PUMP IS INOPERATIVE

Test Y1:

Test Y1-Y3:

Test Y4-Y6:

Test Y6-Y8:

Test Y9-Y11:

Normal Operation
Under normal operation washer pump motor is grounded through internal relays in the wiper motors using circuits 941 (BK/WH) and 946 (VT/LG). The multifunction switch provides input to the windshield wiper motor through circuit 1300 (VT) to activate the washer. The windshield wiper motor activates the internal relay and then provides power through circuit 941 (BK/WH). When the rear washer is activated, the internal relay in the rear wiper motor provides power through circuit 946 (VT/LG).

Possible Causes
- Open in circuits 941 (BK/WH), 946 (VT/LG) and 1300 (VT).
- Inoperative multifunction switch.
- Inoperative washer pump motor.
- Inoperative wiper motor.
- Inoperative rear wiper motor.