Pinpoint Test B: The Wipers Stay On Continuously

WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

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

B1 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 .
- Does the windshield wiper/washer switch pass the component test?
1. YES : Go to B2.
2. NO : INSTALL a new windshield wiper/washer switch. REFER to Wiper/Washer Switch .

B2 CHECK CIRCUITS 56 (DB/OG), 58 (WH), 61 (YE/RD) AND 63 (RD) FOR A SHORT TO GROUND

Disconnect: Windshield Wiper Motor C125

Fig 1: Checking Circuits 56 (DB/OG), 58 (WH), 61 (YE/RD) & 63 (RD) For A Short To Ground

Courtesy of FORD MOTOR CO.

Using the following table, measure the resistance between windshield wiper motor C125 harness side and ground:

Windshield Wiper Motor C125 Pin	Circuit
C125-10	56 (DB/OG)
C125-11	58 (WH)
C125-1	63 (RD)
C125-9	61 (YE/RD)

Are the resistances greater than 10,000 ohms?

YES : Go to B3.
NO : REPAIR the circuit(s) in question. TEST the system for normal operation.

B3 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?
1. YES : INSTALL a new windshield wiper motor. REFER to Wiper Motor . TEST the system for normal operation.
2. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.