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Pinpoint Test F: The Wash And Wipe Function Is Inoperative

CAUTION: Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.

F1 CHECK THE WINDSHIELD WIPER/WASHER SWITCH
- Key in OFF position.
- Disconnect: Windshield Wiper/Washer Switch C2137.
- Carry out the windshield wiper/washer switch component test. Refer to COMPONENT TESTING for component testing.
- Does the windshield wiper/washer switch pass the component test?
Yes : GO to F2.

No : INSTALL a new windshield wiper/washer switch. REFER to WIPER/WASHER SWITCH in this article.
F2 CHECK CIRCUIT 680 (LB/OG) FOR AN OPEN
- Disconnect: Windshield Wiper Motor C125.
- Measure the resistance between the windshield wiper/washer switch C2137-5, circuit 680 (LB/OG), harness side and the windshield wiper motor C125-12, circuit 680 (LB/OG), harness side.
  
  Fig 1: Checking Circuit 680 (LB/OG) For Open
- Is the resistance less than 5 ohms?
Yes : GO to F3.

No : REPAIR the circuit. TEST the system for normal operation.
F3 CHECK FOR CORRECT WINDSHIELD WIPER MOTOR OPERATION
- Disconnect all the windshield wiper motor connectors.
- Check for:
  - corrosion.
  - pushed-out pins.
- Connect all the windshield wiper motor connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes : INSTALL a new windshield wiper motor. REFER to WIPER MOTOR in this article. TEST the system for normal operation.

No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.