Pinpoint Test 8: The Washer Pump Is Inoperative
PINPOINT TEST 8: THE WASHER PUMP IS INOPERATIVE
Normal Operation
Under normal operation, the windshield washer pump motor is grounded through internal relays in the wiper motors using circuits (GY) and (V/G). The multifunction switch provides input to the windshield wiper motor through circuit (GY/BR) to activate the windshield washer. The windshield wiper motor activates the internal relay and then provides power through circuit (GY). When the rear window washer is activated, the internal relay in the rear window wiper motor provides power through circuit (V/G).
Possible Causes
- Wiring, terminals or connectors
- Multifunction switch
- Windshield washer pump motor
- Windshield wiper motor
- Rear window wiper motor
Diagnostic Procedure
Step 1-Step 6:
