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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System And Washer System >> Diagnosis And Testing >> Wipers and Washers >> Pinpoint Tests >> Pinpoint Test F: The Rear Window Wiper Is Inoperative >> Pinpoint Test F: The Rear Window Wiper Is Inoperative

Pinpoint Test F: The Rear Window Wiper Is Inoperative

CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. F1 CHECK THE VOLTAGE TO THE REAR WINDOW WIPER MOTOR RELAY 
    • Key in OFF position.
    • Disconnect: Rear Wiper Relay C2020.
    • Key in ON position.
    • Measure the voltage between rear wiper relay 32020-5, harness side and ground.
      Fig 1: Checking Voltage To Rear Window Wiper Motor Relay (1 Of 2)
      G04654687Courtesy of FORD MOTOR CO.
    • Measure the voltage between rear wiper relay C2020-1, harness side and ground.
      Fig 2: Checking Voltage To Rear Window Wiper Motor Relay (2 Of 2)
      G04654688Courtesy of FORD MOTOR CO.
    • Are the voltages greater than 10 volts? 

    Yes  : GO to  F2.

    No  : VERIFY the CJB fuses 43 (15A) and 56 (20A) are OK. If OK, INSTALL a new CJB. TEST the system for normal operation.

  2. F2 CHECK CIRCUIT 31-DA1 (BK) FOR AN OPEN 
    • Key in OFF position.
    • Measure the resistance between rear wiper relay C2020-4, circuit 31-DA1 (BK), harness side and ground.
      Fig 3: Checking Circuit 31-DA1 (BK) For Open
      G04654689Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes  : GO to  F3.

    No  : REPAIR the circuit. CLEAR the DTCs. TEST the system for normal operation.

  3. F3 CHECK CIRCUIT 91S-KA29 (BK/YE) FOR A SHORT TO VOLTAGE 
    • Key in ON position.
    • Measure the voltage between rear wiper relay C2020-2, circuit 91S-KA29 (BK/YE), harness side and ground.
      Fig 4: Checking Circuit 91S-KA29 (BK/YE) For Short To Voltage
      G04654690Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes  : GO to  F4.

    No  : GO to  F6.

  4. F4 ISOLATE THE GEM FROM CIRCUIT 91S-KA29 (BK/YE) AND CHECK FOR A SHORT TO VOLTAGE 
    • Key in OFF position.
    • Disconnect: GEM C201e.
    • Key in ON position.
    • Measure the voltage between rear wiper relay C2020-2, circuit 91S-KA29 (BK/YE), harness side and ground.
      Fig 5: Checking Isolate GEM Circuit For Short To Voltage
      G04654691Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes  : GO to  F5.

    No  : GO to  F17.

  5. F5 ISOLATE THE CJB FROM CIRCUIT 91S-KA29 (BK/YE) AND CHECK FOR A SHORT TO VOLTAGE 
    • Disconnect: CJB C270b.
    • Key in ON position.
    • Measure the voltage between rear wiper relay C2020-2, circuit 91S-KA29 (BK/YE), harness side and ground.
      Fig 6: Checking Isolate CJB Circuit For Short To Voltage
      G04654692Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes  : INSTALL a new CJB. CLEAR the DTCs. TEST the system for normal operation.

    No  : REPAIR the circuit. CLEAR the DTCs. TEST the system for normal operation.

  6. F6 CHECK CIRCUIT 91S-KA29 (BK/YE) FOR GROUND 
    • Turn the wiper/washer switch to the ON position for the rear wiper and measure the resistance between rear wiper relay C2020-2, circuit 91S-KA29 (BK/YE), and ground.
      Fig 7: Checking Circuit 91S-KA29 (BK/YE) For Ground
      G04654693Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes  : GO to  F7.

    No  : GO to  F10.

  7. F7 CHECK THE REAR WINDOW WIPER MOTOR RELAY FOR NORMAL OPERATION 
    • Key in OFF position.
    • Carry out the rear wiper relay component test. Refer to COMPONENT TESTING .
    • Does the rear wiper relay pass the component test? 

    Yes  : GO to  F8.

    No  : INSTALL a new rear wiper relay. CLEAR the DTCs. TEST the system for normal operation.

  8. F8 CHECK CIRCUITS 15-KA28 (GN/BU) AND 32-KA28 (WH/RD) FOR VOLTAGE 
    • Disconnect: Rear Window Wiper Motor C4218.
    • Connect: Rear Wiper Relay C2020.
    • Key in ON position.
    • Turn the wiper/washer switch to the ON position for the rear wiper and measure the voltage between rear window wiper motor C4218-2, circuit 32-KA28 (WH/RD), harness side and ground, and between rear window wiper motor C4218-1, circuit 15-KA28 (GN/BU), harness side and ground.
      Fig 8: Checking Circuits 15-KA28 (GN/BU) And 32-Ka28 (WH/RD) For Voltage
      G04654694Courtesy of FORD MOTOR CO.
    • Are the voltages greater than 10 volts? 

    Yes  : INSTALL a new rear window wiper motor. REFER to WIPER MOTOR - REAR WINDOW  in this article. CLEAR the DTCs. TEST the system for normal operation.

    No  : GO to  F9.

  9. F9 CHECK CIRCUITS 15-KA28 (GN/BU) AND 32-KA28 (WH/RD) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: CJB C270c.
    • Disconnect: CJB C270f.
    • Measure the resistance between rear window wiper motor C4218-2, circuit 32-KA28 (WH/RD), harness side and CJB C270C-11, circuit 32-KA28 (WH/RD) harness side.
      Fig 9: Checking Circuits 15-KA28 (GN/BU) And 32-KA28 (WH/RD) For Open (1 Of 2)
      G04654695Courtesy of FORD MOTOR CO.
    • Measure the resistance between rear window wiper motor C4218-1, circuit 15-KA28 (GN/BU), harness side and CJB C270f-10, circuit 15-KA28 (GN/BU), harness side.
      Fig 10: Checking Circuits 15-KA28 (GN/BU) And 32-KA28 (WH/RD) For Open (2 Of 2)
      G04654696Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 

    Yes  : INSTALL a new CJB. CLEAR the DTCs. TEST the system for normal operation.

    No  : REPAIR the circuit. CLEAR the DTCs. TEST the system for normal operation.

  10. F10 CHECK CIRCUIT 91S-KA29 (BK/YE) FOR AN OPEN 
    • Disconnect: GEM C201e.
    • Measure the resistance between rear wiper relay C2020-2, circuit 91S-KA29 (BK/YE), harness side and GEM C201e-17, circuit 91S-KA29 (BK/YE), harness side.
      Fig 11: Checking Circuit 91S-KA29 (BK/YE) For Open
      G04654697Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes  : GO to  F12.

    No  : GO to  F11.

  11. F11 CHECK THE CJB 
    • Disconnect: CJB C270b.
    • Measure the resistance between CJB C270b-2, circuit 91S-KA29 (BK/YE), harness side and GEM C201e-17, circuit 91S-KA29 (BK/YE), harness side.
      Fig 12: Checking CJB
      G04654698Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes  : INSTALL a new CJB. CLEAR the DTCs. TEST the system for normal operation.

    No  : REPAIR the circuit. CLEAR the DTCs. TEST the system for normal operation.

  12. F12 CHECK CIRCUIT 15-KA19 (GN/OG) FOR VOLTAGE 
    • Key in OFF position.
    • Disconnect: Wiper/Washer Switch C2081.
    • Key in ON position.
    • Measure the voltage between wiper/washer switch C2081-6, circuit 15-KA19 (GN/OG), harness side and ground.
      Fig 13: Checking Circuit 15-KA19 (GN/OG) For Voltage
      G04654699Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes  : GO to  F14.

    No  : GO to  F13.

  13. F13 CHECK CIRCUIT 15-KA19 (GN/OG) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: CJB C270f.
    • Measure the resistance between wiper/washer switch C2081-6, circuit 15-KA19 (GN/OG), harness side and the CJB C270f-5, circuit 15-KA19 (GN/OG), harness side.
      Fig 14: Checking Circuit 15-KA19 (GN/OG) For Open
      G04654700Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes  : INSTALL a new CJB. CLEAR the DTCs. TEST the system for normal operation.

    No  : REPAIR the circuit. CLEAR the DTCs. TEST the system for normal operation.

  14. F14 CHECK CIRCUIT 31-KA19 (BK) FOR GROUND 
    • Key in OFF position.
    • Measure the resistance between wiper/washer switch C2081-3, circuit 31-KA19 (BK), harness side and ground.
      Fig 15: Checking Circuit 31-KA19 (BK) For Ground
      G04654701Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes  : GO to  F15.

    No  : REPAIR the circuit. CLEAR the DTCs. TEST the system for normal operation.

  15. F15 CHECK CIRCUIT 32-KA35 (WH/RD) FOR AN OPEN 
    • Measure the resistance between wiper/washer switch C2081-5, circuit 32-KA35 (WH/RD), harness side and the GEM C201e-3, circuit 32-KA35 (WH/RD), harness side.
      Fig 16: Checking Circuit 32-KA35 (WH/RD) For Open
      G04654702Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes  : GO to  F16.

    No  : REPAIR the circuit. CLEAR the DTCs. TEST the system for normal operation.

  16. F16 CHECK THE WIPER/WASHER SWITCH FOR NORMAL OPERATION 
    • Carry out the wiper/washer switch component test. Refer to WIPER/WASHER SWITCH (17A553) for component testing.
    • Does the wiper/washer switch pass the component test? 

    Yes  : GO to  F17.

    No  : INSTALL a new multi-function switch. REFER to STEERING COLUMN SWITCHES . CLEAR the DTCs. TEST the system for normal operation.

  17. F17 CHECK FOR CORRECT GEM OPERATION 
    • Disconnect all the GEM connectors.
    • Check for:
      • Corrosion.
      • Pushed-out pins.
    • Connect all the GEM 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 GEM. REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation.

    No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

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