Pinpoint Test A: The Windshield Wipers Are Inoperative

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

A1 CHECK CIRCUITS 65 (DG) AND 1002 (BK/PK) FOR VOLTAGE
- Key in OFF position.
- Disconnect: Windshield Wiper Motor C125.
- Key in ON position.
- Measure the voltage between windshield wiper C125 pin 5, circuit 65 (DG), harness side and ground; and between windshield wiper motor C125 pin 8, circuit 1002 (BK/PK), harness side and ground.
  
  Fig 1: Checking Circuits 65 (DG) And 1002 (BK/PK) For Voltage
  Courtesy of FORD MOTOR CO.
- Are the voltages greater than 10 volts?
Result / Action to Take
- Yes : GO to A2.
- No : REPAIR the circuit(s) in question. TEST the system for normal operation.
A2 CHECK CIRCUITS 57 (BK) AND 676 (PK/OG) FOR OPENS
- Key in OFF position.
- Measure the resistance between windshield wiper C125 pin 6, circuit 57 (BK), harness side and ground; and between windshield wiper motor C125 pin 3, circuit 676 (PK/OG), harness side and ground.
  
  Fig 2: Measuring Resistance Between Connector Terminals And Ground
  Courtesy of FORD MOTOR CO.
- Are the resistances less than 5 ohms?
- Yes : GO to A3.
- No : REPAIR the circuit(s) in question. TEST the system for normal operation.
A3 CHECK THE MULTIFUNCTION SWITCH
- 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?
- Yes : GO to A4.
- No : INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES .
A4 CHECK CIRCUIT 57 (BK) FOR AN OPEN
- Measure the resistance between C202b pin 6, circuit 57 (BK), harness side and ground.
  
  Fig 3: Checking Circuit 57 (BK) For An Open
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes : GO to A5.
- No : REPAIR the circuit. TEST the system for normal operation.

A5 CHECK CIRCUITS 56 (DB/OG), 58 (WH), 61 (YE/RD) AND 63 (RD) FOR OPENS

Using the following table, measure the resistance between multifunction switch C202b harness side and windshield wiper motor C125 harness side:

Multifunction Switch C202b	Windshield Wiper Motor C125
pin 2, circuit 56 (DB/OG)	pin 10, circuit 56 (DB/OG)
pin 3, circuit 58 (WH)	pin 11, circuit 58 (WH)
pin 4, circuit 61 (YE/RD)	pin 1, circuit 61 (YE/RD)
pin 1, circuit 63 (RD)	pin 9, circuit 63 (RD)

Fig 4: Checking Circuits 56 (DB/OG), 58 (WH), 61 (YE/RD) And 63 (RD) For Opens

Courtesy of FORD MOTOR CO.

Is the resistance less than 5 ohms?

Yes : GO to A6.
No : REPAIR the circuit(s) in question. TEST the system for normal operation.

A6 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 A7.
- 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.
A7 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.