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Pinpoint Test R: The Wipers Stay On Continuously

WARNING: This page is about a different car, the 2004 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
  1. R1 CHECK THE MULTIFUNCTION SWITCH 
    • Key in OFF position.
    • Disconnect: Multifunction Switch C202.
    • Carry out the multifunction switch component test.

      Refer to COMPONENT TESTING .

    • Did the multifunction switch pass the component test? 
    1. Yes  : GO to R2.
    2. No  : INSTALL a new multifunction switch. REFER to STEERING SYSTEM for the removal and installation procedure.
  2. R2 CHECK CIRCUIT 31-KA19 (BK/RD) FOR AN OPEN 
    • Measure the resistance between the multifunction switch C202-2, circuit 31-KA19 (BK/RD), harness side and ground.
      Fig 1: Measuring Resistance Between Multifunction Switch C202-2, Circuit 31-Ka19 (Bk/Rd)
      G03203517Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes  : GO to R3.
    2. No  : REPAIR the circuit. TEST the system for normal operation.
  3. R3 CHECK CIRCUITS 8-KA8 (WH/RD), 10-KA8 (GY/RD), 8-KA11 (WH/BK) AND 8-KA10 (WH/GN) FOR SHORTS TO GROUND 
    • Disconnect: Windshield Wiper Motor C125.
    • Using the following table, measure the resistance between the windshield wiper motor C125, harness side and ground:
      WINDSHIELD WIPER MOTOR C125 AND GROUND

      Windshield Wiper Motor C125 Ground
      pin 1, circuit 8-KA11 (WH/BK) ground
      pin 9, circuit 8-KA10 (WH/GN) ground
      pin 10, circuit 8-KA8 (WH/RD) ground
      pin 11, circuit 10-KA8 (GY/RD) ground
      Fig 2: Measuring Resistance Between Windshield Wiper Motor C125, Harness Side And Ground
      G03203518Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 
    1. Yes  : GO to R4.
    2. No  : REPAIR the circuit(s) in question. TEST the system for normal operation.
  4. R4 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? 
    1. Yes  : GO to R5.
    2. No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal operation.
  5. R5 CHECK THE WINDSHIELD WIPER MOTOR 
    • Key in OFF position.
    • Disconnect: Windshield Wiper Motor C125.
    • Carry out the windshield wiper motor component test as described.
    • Did the windshield wiper motor pass the component test? 
    1. Yes  : The system is operating correctly at this time. The concern may have been caused by a binding or incorrect pivot arm adjustment. REFER to WINDSHIELD WIPER . TEST the system for normal operation.
    2. No  : INSTALL a new windshield wiper motor. REFER to WINDSHIELD WIPER .
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