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Home >> Ford >> 2009 >> Taurus X SEL, FWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System & Washer System >> Diagnostic Tests >> Wipers and Washers >> Pinpoint Tests >> Pinpoint Test I: The Washer Pump is Inoperative - Taurus X >> Pinpoint Test I: The Washer Pump Is Inoperative - TAURUS X

Pinpoint Test I: The Washer Pump Is Inoperative - TAURUS X

  1. I1 CHECK CIRCUIT CRW14 (BU/WH) FOR GROUND 
    • Disconnect: Washer Pump Motor C137
    • Key in ON position.
    • Measure the resistance between washer pump motor C137-2, circuit CRW14 (BU/WH) harness side and ground.
      • Fig 1: Measuring Resistance
      GF0045512Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  I3.
    2. NO  : Go to  I2.
  2. I2 CHECK CIRCUIT CRW14 (BU/WH) FOR AN OPEN 
    • Key in OFF position.
    • 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
      GF0045511Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  I14.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. I3 CHECK CIRCUIT GD120 (BK/GN) FOR GROUND 
    • Measure the resistance between washer pump motor C137-1, circuit GD120 (BK/GN) harness side and ground.
      • Fig 3: Measuring Resistance
      GF0045509Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  I6.
    2. NO  : Go to  I4.
  4. I4 CHECK CIRCUIT GD120 (BK/GN) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Rear Window Wiper Motor C476
    • Measure the resistance between rear window wiper motor C476-6, circuit GD120 (BK/GN), harness side and washer pump motor C137-1, circuit GD120 (BK/GN) harness side.
      • Fig 4: Measuring Resistance
      GF0045513Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  I5.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  5. I5 CHECK CIRCUIT GD133 (BK) FOR AN OPEN 
    • Measure the resistance between rear window wiper motor C476-5, circuit GD133 (BK), harness side and ground.
      • Fig 5: Measuring Resistance
      GF0041893Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  I15.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  6. I6 CHECK CIRCUIT CRW14 (BU/WH) FOR VOLTAGE 
    • Key in ON position.
    • Measure the voltage between washer pump motor C137-2, circuit CRW14 (BU/WH) harness side and ground while depressing the multi-function switch to the wash position.
      • Fig 6: Measuring Voltage
      GF0045510Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  I10.
    2. NO  : Go to  I7.
  7. I7 CHECK CIRCUIT CRW14 (BU/WH) FOR A SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: Windshield Wiper Motor C125
    • Measure the resistance between washer pump motor C137-2, circuit CRW14 (BU/WH) harness side and ground.
      • Fig 7: Measuring Resistance
      GF0045512Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  I8.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  8. I8 CHECK THE MULTI-FUNCTION SWITCH 
    • Disconnect: Multi-Function Switch C202
    • Carry out the Multi-Function Switch Component Test. Refer to COMPONENT TESTING article.
    • Did the multi-function switch pass the component test? 
    1. YES  : Go to  I9.
    2. NO  : INSTALL a new multi-function switch. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.
  9. I9 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 multi-function switch C202-10, circuit CRW07 (GY/BN) harness side; and between multi-function switch C202-10, circuit CRW07 (GY/BN) harness side and ground.
      • Fig 8: Checking Circuit For Open Or Short To Ground
      GF0021751Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms between multi-function switch and wiper motor; and greater than 10,000 ohms between multi-function switch and ground? 
    1. YES  : Go to  I14.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  10. I10 CHECK CIRCUIT GD120 (BK/GN) FOR VOLTAGE 
    • Measure the voltage between washer pump motor C137-1, circuit GD120 (BK/GN) harness side and ground while depressing the multi-function switch to the rear wash position.
      • Fig 9: Measuring Voltage
      GF0045514Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : INSTALL a new washer pump. TEST the system for normal operation.
    2. NO  : Go to  I11.
  11. I11 CHECK CIRCUIT GD120 (BK/GN) FOR A SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: Rear Window Wiper Motor C476
    • Measure the resistance between washer pump motor C137-1, circuit GD120 (BK/GN) harness side and ground.
      • Fig 10: Measuring Resistance
      GF0045509Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  I12.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  12. I12 CHECK THE MULTI-FUNCTION SWITCH 
    • Disconnect: Multi-Function Switch C202
    • Carry out the Multi-Function Switch Component Test. Refer to COMPONENT TESTING article.
    • Did the multi-function switch pass the component test? 
    1. YES  : Go to  I13.
    2. NO  : INSTALL a new multi-function switch. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.
  13. I13 CHECK CIRCUIT CRW20 (GY/YE) FOR AN OPEN OR SHORT TO GROUND 
    • Measure the resistance between rear window wiper motor C476-7, circuit CRW20 (GY/YE) harness side and multi-function switch C202-14, circuit CRW20 (GY/YE) harness side; and between multi-function switch C202-14, circuit CRW20 (GY/YE) harness side and ground.
      • Fig 11: Measuring Resistance
      GF0045515Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms between multi-function switch and wiper motor; and greater than 10,000 ohms between multi-function switch and ground? 
    1. YES  : Go to  I15.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  14. I14 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? 
    1. YES  : INSTALL a new windshield wiper motor. REFER to Wiper Motor - Windshield . TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  15. I15 CHECK THE REAR WINDOW WIPER MOTOR 
    • Disconnect all wiper motor connectors.
    • Check for:
      • liftgate 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? 
    1. YES  : INSTALL a new rear window wiper motor. REFER to Wiper Motor - Rear Window . TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
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