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Pinpoint Test E: The Washer Pump Is Inoperative

NOTE: Use the correct probe adapter(s) from the Flex Probe Kit when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. E1 CHECK CIRCUIT GD123 (BK/GY) FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: Washer Pump Motor C137.
    • Measure the resistance between washer pump motor C137-2, circuit GD123 (BK/GY), harness side and ground.
      Fig 1: Measuring Resistance Between Washer Pump Motor C137-2, Circuit GD123 (BK/GY), Harness Side And Ground
      G06099923Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to E2  .
    • No:  REPAIR the circuit. TEST the system for normal operation.
  2. E2 CHECK CIRCUIT CRW14 (BU/WH) FOR VOLTAGE 
    • Ignition ON.
    • Measure the voltage between washer pump motor C137-1, circuit CRW14 (BU/WH), harness side and ground while depressing the multifunction switch to the WASH position.
      Fig 2: Measuring Voltage Between Washer Pump Motor C137-1, Circuit CRW14 (BU/WH), Harness Side And Ground
      G06099926Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
  3. E3 CHECK THE MULTIFUNCTION SWITCH 
    • Ignition OFF.
    • Disconnect: Multifunction Switch C202.
    • Carry out the Multifunction Switch component test.

      Refer to SYSTEM WIRING DIAGRAMS .

    • Did the multifunction switch pass the component test? 
  4. E4 CHECK CIRCUIT CRW07 (GY/BN) FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: Windshield Wiper Motor C125.
    • Measure the resistance between windshield wiper motor C125-12, circuit CRW07 (GY/BN), harness side and multifunction switch C202-10, circuit CRW07 (GY/BN), harness side and between multifunction switch C202-10, circuit CRW07 (GY/BN), harness side and ground.
      Fig 3: Measuring Resistance Between Windshield Wiper Motor C125-12 And Multifunction Switch C202-10
      G06071233Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to E5  .
    • No:  REPAIR the circuit. TEST the system for normal operation.
  5. E5 CHECK CIRCUIT CRW14 (BU/WH) FOR AN OPEN 
    • Measure the resistance between windshield wiper motor C125-7, circuit CRW14 (BU/WH), harness side and washer pump motor C137-1, circuit CRW14 (BU/WH), harness side.
      Fig 4: Measuring Resistance Between Windshield Wiper Motor C125-7 And Washer Pump Motor C137-1
      G06099922Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to E6  .
    • No:  REPAIR the circuit. TEST the system for normal operation.
  6. E6 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:  INSTALL a new windshield wiper motor. REFER to WIPER MOTOR .
    • 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.
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