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Home >> Ford >> 2004 >> Excursion 5.4 L, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 896 (Wiper System And Washer System) >> Diagnosis And Testing >> Wipers and Washers >> Pinpoint Tests >> Pinpoint Test K: The Windshield Washer Pump Is Inoperative >> Pinpoint Test K: The Windshield Washer Pump Is In Operative
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Pinpoint Test K: The Windshield Washer Pump Is In Operative

WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
  1. K1 CHECK CIRCUIT 1300 (VT) FOR GROUND 
    • Disconnect: Windshield Wiper Motor C1348.
    • Key in ON position.
    • Measure the resistance between windshield wiper motor C1348-12, circuit 1300 (VT), harness side and ground while depressing the steering column multifunction switch to the windshield wiper WASH position.
      Fig 1: Measuring Resistance Between Windshield Wiper Motor C1348-12, Circuit 1300 (VT) And Ground
      G03946171Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to  K3.
    • No  : GO to K2.
  2. K2 CHECK THE STEERING COLUMN MULTIFUNCTION SWITCH 
    • Key in OFF position.
    • Disconnect: Steering Column Multifunction Switch C202a.
    • Carry out the steering column multifunction switch component test. Refer to COMPONENT TESTING article.
    • Did the steering column multifunction switch pass the component test? 
    • Yes  : REPAIR circuit 1300 (VT) for an open. TEST the system for normal operation.
    • No  : INSTALL a new steering column multifunction switch. REFER to STEERING COLUMN SWITCHES .
  3. K3 CHECK CIRCUIT 941 (BK/WH) FOR GROUND 
    • Key in OFF position.
    • Connect: Windshield Wiper Motor C1348.
    • Disconnect: Windshield Washer Pump Motor C137.
    • Measure the resistance between windshield washer pump motor C137-2, circuit 941 (BK/WH) harness side and ground.
      Fig 2: Checking Circuit 941 (BK/WH) For Ground
      G03880817Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to K4.
    • No  : GO to  K8.
  4. K4 CHECK CIRCUIT 946 (VT/LG) FOR GROUND 
    • Measure the resistance between windshield washer pump motor C137-1, circuit 946 (VT/LG) harness side and ground.
      Fig 3: Measuring Resistance Between Windshield Washer Pump Motor C137-1, Circuit 946 (VT/LG) And Ground
      G03946173Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to K5.
    • No  : GO to  K7.
  5. K5 CHECK CIRCUIT 946 (VT/LG) FOR VOLTAGE 
    • Key in ON position.
    • Measure the voltage between windshield washer pump motor C137-1, circuit 946 (VT/LG) harness side and ground while depressing the steering column multifunction switch to the rear window wiper WASH position.
      Fig 4: Measuring Voltage Between Windshield Washer Pump Motor C137-1, Circuit 946 (VT/LG) And Ground
      G03946174Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes  : GO to K6.
    • No  : GO to  K9
  6. K6 CHECK CIRCUIT 941 (BK/WH) FOR VOLTAGE 
    • Key in OFF position.
    • Connect: Rear Window Wiper Motor C476.
    • Disconnect: Windshield Washer Pump Motor C137.
    • Key in ON position.
    • Measure the voltage between windshield washer pump motor C137-2, circuit 941 (BK/WH) harness side and ground while depressing the steering column multifunction switch to the windshield wiper wash position.
      Fig 5: Measuring Voltage Between Windshield Washer Pump Motor C137-2, Circuit 941 (BK/WH) And Ground
      G03989326Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes  : INSTALL a new windshield washer pump. REFER to WINDSHIELD WASHER PUMP . TEST the system for normal operation.
    • No  : GO to  K9.
  7. K7 CHECK CIRCUIT 946 (VT/LG) FOR OPEN 
    • Disconnect: Rear Window Wiper Motor C4171.
    • Measure the resistance between rear window wiper motor C4171-7, circuit 946 (VT/LG), harness side and windshield washer pump motor C137-1, circuit 946 (VT/LG), harness side.
      Fig 6: Measuring Resistance Between Rear Window Wiper Motor C4171-7 And Windshield Washer Pump Motor C137-1
      G03946176Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to  K9.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  8. K8 CHECK CIRCUIT 941 (BK/WH) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Windshield Wiper Motor C1348.
    • Measure the resistance between windshield wiper motor C1348-7, circuit 941 (BK/WH), harness side and windshield washer pump motor C137-2, circuit 941 (BK/WH), harness side.
      Fig 7: Measuring Resistance Between Windshield Wiper Motor C1348-7 And Windshield Washer Pump Motor C137-2
      G03932665Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to K9.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  9. K9 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  : For the windshield wiper motor GO to K10. For the rear window wiper motor GO to  K11.
    • 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.
  10. K10 CHECK THE WINDSHIELD WIPER MOTOR 
    • Key in OFF position.
    • Disconnect: Windshield Wiper Motor C1348.
    • Carry out the windshield wiper motor component test as outlined in this article.
    • Did the windshield wiper motor pass the component test? 
    • Yes  : The system is operating correctly at this time. Concern may have been caused by binding or incorrect pivot arm adjustment. TEST the system for normal operation.
    • No  : INSTALL a new windshield wiper motor. REFER to WINDSHIELD WIPER MOTOR .
  11. K11 CHECK THE REAR WINDOW WIPER MOTOR 
    • Carry out the rear window wiper motor component test as outlined in this article.
    • Did the rear window wiper motor pass the component test? 
    • Yes  : The system is operating correctly at this time. Concern may have been caused by binding or incorrect pivot arm adjustment. TEST the system for normal operation.
    • No  : INSTALL a new rear window wiper motor. REFER to REAR WINDOW WIPER MOTOR .
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