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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1834 (Wiper System & Washer System) >> Diagnosis And Testing >> Wipers and Washers >> Pinpoint Tests >> Pinpoint Test H: The Washer Pump is Inoperative >> Pinpoint Test H: The Washer Pump Is Inoperative

Pinpoint Test H: The Washer Pump Is Inoperative

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
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. H1 CHECK CIRCUIT CRW24 (GY) FOR GROUND 
    • Disconnect: Washer Pump Motor C1397.
    • Ignition ON.
    • Measure the resistance between washer pump C1397-1, circuit CRW24 (GY), harness side and ground.
      Fig 1: Measuring Resistance Between Washer Pump C1397-1, Circuit CRW24 (BU/WH) And Ground
      G06099921Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to  H3.
    • No:  GO to H2  .
  2. H2 CHECK CIRCUIT CRW24 (GY) FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: Windshield Wiper Motor C125.
    • Measure the resistance between windshield wiper motor C125-7, circuit CRW24 (GY), harness side and washer pump C1397-1, circuit CRW24 (GY), harness side.
      Fig 2: Measuring Resistance Between Windshield Wiper Motor C125-7, Circuit CRW24 (GY) And Washer Pump C1397-1, Circuit CRW24 (GY)
      G06099922Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to  H14.
    • No:  REPAIR the circuit. TEST the system for normal operation.
  3. H3 CHECK CIRCUIT CRW23 (VT/GN) FOR GROUND 
    • Measure the resistance between washer pump C1397-2, circuit CRW23 (VT/GN), harness side and ground.
      Fig 3: Checking Circuit
      G06099923Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to  H6.
    • No:  GO to H4  .
  4. H4 CHECK CIRCUIT CRW23 (VT/GN) FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: Rear Window Wiper Motor C476.
    • Measure the resistance between rear window wiper motor C476-6, circuit CRW23 (VT/GN), harness side and washer pump C1397-2, circuit CRW23 (VT/GN), harness side.
      Fig 4: Measuring Resistance Between Rear Window Wiper Motor C476-6, Circuit CRW23 (VT/GN) And Washer Pump C1397-2, Circuit CRW23 (VT/GN)
      G06099924Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to H5  .
    • No:  REPAIR the circuit. TEST the system for normal operation.
  5. H5 CHECK CIRCUIT GD149 (BK/GY) FOR AN OPEN 
    • Measure the resistance between rear window wiper motor C476-5, circuit GD149 (BK/GY), harness side and ground.
      Fig 5: Checking Circuit
      G06099925Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to  H15.
    • No:  REPAIR the circuit. TEST the system for normal operation.
  6. H6 CHECK CIRCUIT CRW24 (GY) FOR VOLTAGE 
    • Ignition ON.
    • Measure the voltage between washer pump C1397-1, circuit CRW24 (GY), harness side and ground while depressing the multifunction switch to the wash position.
      Fig 6: Measuring Voltage Between Washer Pump C1397-1, Circuit CRW24 (GY) And Ground
      G06099926Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes:  GO to  H10.
    • No:  GO to H7  .
  7. H7 CHECK CIRCUIT CRW24 (GY) FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Disconnect: Windshield Wiper Motor C125.
    • Measure the resistance between washer pump C1397-1, circuit CRW24 (BU/WH), harness side and ground.
      Fig 7: Measuring Resistance Between Washer Pump C1397-1, Circuit CRW24 (BU/WH) And Ground
      G06099921Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    • Yes:  GO to H8  .
    • No:  REPAIR the circuit. TEST the system for normal operation.
  8. H8 CHECK THE MULTIFUNCTION SWITCH 
    • Disconnect: Multifunction Switch C202.
    • Carry out the Multifunction Switch Component Test.

      Refer to COMPONENT TESTING (Except Hybrid), COMPONENT TESTING (Hybrid) for component testing.

    • Did the multifunction switch pass the component test? 
  9. H9 CHECK CIRCUIT CRW07 (GY/BN) FOR AN OPEN OR SHORT TO GROUND 
    • 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 8: Checking Circuit
      G06071233Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms between multifunction switch and wiper motor; and greater than 10,000 ohms between multifunction switch and ground? 
    • Yes:  GO to  H14.
    • No:  REPAIR the circuit. TEST the system for normal operation.
  10. H10 CHECK CIRCUIT CRW23 (VT/GN) FOR VOLTAGE 
    • Measure the voltage between washer pump C1397-2, circuit CRW23 (VT/GN), harness side and ground while depressing the multifunction switch to the rear wash position.
      Fig 9: Measuring Voltage Between Washer Pump C1397-2, Circuit CRW23 (VT/GN) And Ground
      G06099929Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes:  INSTALL a new washer pump. TEST the system for normal operation.
    • No:  GO to H11  .
  11. H11 CHECK CIRCUIT CRW23 (VT/GN) FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Disconnect: Rear Window Wiper Motor C476.
    • Measure the resistance between washer pump C1397-2, circuit CRW23 (VT/GN), harness side and ground.
      Fig 10: Checking Circuit
      G06099923Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    • Yes:  GO to H12  .
    • No:  REPAIR the circuit. TEST the system for normal operation.
  12. H12 CHECK THE MULTIFUNCTION SWITCH 
    • Disconnect: Multifunction Switch C202.
    • Carry out the Multifunction Switch Component Test.

      Refer to COMPONENT TESTING (Except Hybrid), COMPONENT TESTING (Hybrid) for component testing.

    • Did the multifunction switch pass the component test? 
  13. H13 CHECK CIRCUIT CRW20 (GY/YE) FOR AN OPEN OR SHORT TO GROUND 
    • Measure the resistance between rear window wiper motor C476-3, circuit CRW20 (GY/YE), harness side and multifunction switch C202-14, circuit CRW20 (GY/YE), harness side; and between multifunction switch C202-14, circuit CRW20 (GY/YE), harness side and ground.
      Fig 11: Checking Circuit
      G06099931Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms between multifunction switch and wiper motor; and greater than 10,000 ohms between multifunction switch and ground? 
    • Yes:  GO to  H15.
    • No:  REPAIR the circuit. TEST the system for normal operation.
  14. H14 CHECK THE WINDSHIELD WIPER MOTOR 
    • Disconnect all wiper motor connectors.
    • Check for:
      • liftgate glass open.
      • 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 - WINDSHIELD . TEST the system for normal operation.
    • No:  REPAIR the circuit. TEST the system for normal operation.
  15. H15 CHECK THE REAR WINDOW WIPER MOTOR 
    • Disconnect all wiper motor connectors.
    • Check for:
      • liftgate glass open.
      • 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 rear window wiper motor. REFER to WIPER MOTOR - REAR WINDOW . TEST the system for normal operation.
    • No:  REPAIR the circuit. TEST the system for normal operation.
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