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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> Accessories & Equipment >> Wiper/Washer Systems >> 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

  1. H1 CHECK CIRCUIT CRW14 (BU/WH) FOR GROUND 
    • Disconnect: Washer Pump Motor C137.
    • Ignition ON.
    • Measure the resistance between washer pump motor C137-2, circuit CRW14 (BU/WH), harness side and ground.
    Fig 1: Locating Subframe Mount Bracket Assembly
    G06071227Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to  H3.
    • No  : GO to H2.
  2. H2 CHECK CIRCUIT CRW14 (BU/WH) FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: Windshield Wiper Motor C125.
    • Measure the resistance between windshield wiper motor C125-7, circuit CRW14 (BU/WH), harness side and washer pump motor C137-2, circuit CRW14 (BU/WH), harness side.
    Fig 2: Measuring Resistance Between Windshield Wiper Motor C125-7 And Washer Pump Motor C137-2, Circuit CRW14 (BU/WH), Harness Side
    G06071228Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to  H13.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  3. H3 CHECK CIRCUIT CPW23 (VT/GN) FOR GROUND 
    • Measure the resistance between washer pump motor C137-1, circuit CPW23 (VT/GN), harness side and ground.
    Fig 3: Measuring Resistance Between Washer Pump Motor C137-1, Circuit CPW23 (VT/GN), Harness Side And Ground
    G06071229Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to  H5.
    • No  : GO to H4.
  4. H4 CHECK CIRCUIT CPW23 (VT/GN) FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: Rear Window Wiper Motor C476.
    • Measure the resistance between rear window wiper motor C476-7, circuit CPW23 (VT/GN), harness side and washer pump motor C137-1, circuit CPW23 (VT/GN), harness side.
    Fig 4: Measuring Resistance Between Rear Window Wiper Motor C476-7 And Washer Pump Motor C137-1, Circuit CPW23 (VT/GN), Harness Side
    G06071230Courtesy 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.
  5. H5 CHECK CIRCUIT CRW14 (BU/WH) FOR VOLTAGE 
    • Ignition ON.
    • Measure the voltage between washer pump motor C137-2, circuit CRW14 (BU/WH), harness side and ground while depressing the multifunction switch to the windshield wash position.
    Fig 5: Measuring Voltage Between Washer Pump Motor C137-2, Circuit CRW14 (BU/WH), Harness Side And Ground
    G06071231Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes  : GO to  H9.
    • No  : GO to H6.
  6. H6 CHECK CIRCUIT CRW14 (BU/WH) FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Disconnect: Windshield Wiper Motor C125.
    • Measure the resistance between washer pump motor C137-2, circuit CRW14 (BU/WH), harness side and ground.
    Fig 6: Measuring Resistance Between Washer Pump Motor C137-2, Circuit CRW14 (BU/WH), Harness Side And Ground
    G06071232Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    • Yes  : GO to H7.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  7. H7 CHECK THE MULTIFUNCTION SWITCH 
    • Disconnect: Multifunction Switch C202.
    • Carry out the Multifunction Switch component test.

    Refer to SYSTEM WIRING DIAGRAMS for component testing.

    • Did the multifunction switch pass the component test? 
    • Yes  : GO to H8.
    • No  : INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES . TEST the system for normal operation.
  8. H8 CHECK CIRCUIT CRW07 (GY/BN) FOR AN OPEN OR SHORT TO GROUND 
    • Measure the resistance between 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 7: Measuring Resistance Between Wiper Motor C125-12 And Multifunction Switch C202-10, Circuit CRW07 (GY/BN), Harness Side
    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  H13.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  9. H9 CHECK CIRCUIT CPW23 (VT/GN) FOR VOLTAGE 
    • Measure the voltage between washer pump motor C137-1, circuit CPW23 (VT/GN), harness side and ground while depressing the multifunction switch to the rear wash position.
    Fig 8: Measuring Voltage Between Washer Pump Motor C137-1, Circuit CPW23 (VT/GN), Harness Side And Ground
    G06071234Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes  : INSTALL a new washer pump. REFER to WASHER PUMP . TEST the system for normal operation.
    • No  : GO to H10.
  10. H10 CHECK CIRCUIT CPW23 (VT/GN) FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Disconnect: Rear Window Wiper Motor C476.
    • Measure the resistance between washer pump motor C137-1, circuit CPW23 (VT/GN), harness side and ground.
    Fig 9: Measuring Resistance Between Washer Pump Motor C137-1, Circuit CPW23 (VT/GN), Harness Side And Ground
    G06071229Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    • Yes  : GO to H11.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  11. H11 CHECK THE MULTIFUNCTION SWITCH 
    • Disconnect: Multifunction Switch C202.
    • Carry out the Multifunction Switch component test.

    Refer to SYSTEM WIRING DIAGRAMS for component testing.

    • Did the multifunction switch pass the component test? 
    • Yes  : GO to H12.
    • No  : INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES . TEST the system for normal operation.
  12. H12 CHECK CIRCUIT CRW20 (GY/YE) FOR AN OPEN OR SHORT TO GROUND 
    • Measure the resistance between multifunction switch C202-14, circuit CRW20 (GY/YE), harness side and rear window wiper motor C476-4, circuit CRW20 (GY/YE), harness side; and between multifunction switch C202-14, circuit CRW20 (GY/YE), harness side and ground.
    Fig 10: Measuring Resistance Between Multifunction Switch C202-14 And Rear Window Wiper Motor C476-4, Circuit CRW20 (GY/YE), Harness Side
    G06071242Courtesy 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.
  13. H13 CHECK THE WINDSHIELD WIPER MOTOR 
    • 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 - WINDSHIELD . TEST the system for normal operation.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  14. H14 CHECK THE REAR WINDOW WIPER MOTOR 
    • 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 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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