Pinpoint Test B: The Windshield Wipers Stay On Continuously

WARNING: This page is about a different car, the 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

Test Step

B1 CHECK THE MULTIFUNCTION SWITCH
- Key in OFF position.
- Disconnect: Multifunction Switch C202b.
- Carry out the multifunction switch component test. Refer to COMPONENT TESTING - F250-F550 SUPER DUTY PICK for component testing.
- Did the multifunction switch pass the component test?
Result / Action to Take
- Yes : GO to B2.
- No : INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES .
B2 CHECK CIRCUIT 57 (BK) FOR AN OPEN
- Measure the resistance between multifunction switch C202b pin 6, circuit 57 (BK), harness side and ground.
  
  Fig 1: Checking Circuit 57 (BK) For An Open
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes : GO to B3.
- No : REPAIR the circuit. TEST the system for normal operation.

B3 CHECK CIRCUITS 56 (DB/OG), 58 (WH), 61 (YE/RD) AND 63 (RD) FOR SHORTS

Disconnect: Windshield Wiper Motor C125.

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

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

Fig 2: Checking Circuits 56 (DB/OG), 58 (WH), 61 (YE/RD) And 63 (RD) For Shorts

Courtesy of FORD MOTOR CO.

Is the resistance greater than 10,000 ohms?

Yes : GO to B4.
No : REPAIR the circuit(s) in question. TEST the system for normal operation.

B4 CHECK FOR CORRECT WIPER MOTOR OPERATION
- Disconnect all wiper motor connectors.
- Check for:
  - corrosion
  - pushed-out pins
- Connect all 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 : GO to B5.
- No : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. TEST the system for normal operation.
B5 CHECK THE WINDSHIELD WIPER MOTOR
- Key in OFF position.
- Disconnect: Windshield Wiper Motor C125.
- Carry out the windshield wiper motor component test as outlined in this article.
- Did the windshield wiper motor pass the component test?
- Yes : The system is operating correctly at this time. Concern may have been caused by incorrect binding pivot arm adjustment. REFER to WIPER BLADE AND PIVOT ARM ADJUSTMENT in this article. TEST the system for normal operation.
- No : INSTALL a new windshield wiper motor. REFER to WINDSHIELD WIPER MOTOR in this article.