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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 558 (Wiper System & Washer System) >> Diagnosis And Testing >> Wipers and Washers >> Pinpoint Tests >> Pinpoint Test B: The Rear Window Wiper Is Inoperative >> Pinpoint Test B: The Rear Window Wiper Is Inoperative

Pinpoint Test B: The Rear Window Wiper Is Inoperative

WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
  1. B1 CHECK THE LIFTGATE AJAR PID 
    • Monitor the liftgate ajar PID while opening and closing the liftgate.
    • Does the liftgate ajar PID agree with the liftgate position? 

    Yes:  GO to  B2.

    No:  REFER to INTERIOR LIGHTING to diagnose the liftgate ajar circuit.

  2. B2 CHECK LIFTGATE AJAR CIRCUIT 700 (WH/PK) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: SJB C2280c.
    • Disconnect: Liftgate Ajar Switch C479.
    • Using CIRCUIT REFERENCE TABLE  , measure the resistance between SJB C2280c, rear window wiper motor C476, and liftgate ajar switch C479 harness side:
      CIRCUIT REFERENCE TABLE

      SJB C2280C Liftgate Ajar Switch C479 Rear Window Wiper Motor C476
      C2280c-5, circuit 700 (WH/PK) C479-C, circuit 700 (WH/PK) -
      C2280c-5, circuit 700 (WH/PK) - C476-3, circuit 700 (WH/PK)
      - C479-C, circuit 700 (WH/PK) C476-3, circuit 700 (WH/PK)
      Fig 1: Measuring Resistance Between SJB C2280c, Rear Window Wiper Motor C476 & Liftgate Ajar Switch C479 Harness Side
      G04659087Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 

    Yes:  GO to  B3.

    No:  REPAIR the circuit(s) in question. TEST the system for normal operation.

  3. B3 CHECK CIRCUIT 406 (BN/WH) FOR VOLTAGE 
    • Key in OFF position.
    • Disconnect: Rear Window Wiper Motor C476.
    • Key in ON position.
    • Measure the voltage between rear window wiper motor C476-4, circuit 406 (BN/WH), harness side and ground.
      Fig 2: Measuring Voltage Between Rear Window Wiper Motor C476-4, Circuit 406 (BN/WH), Harness Side & Ground
      G04659088Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes:  GO to  B12.

    No:  VERIFY BJB fuse 39 (25A) is OK. If OK, GO to  B4.

  4. B4 CHECK CIRCUIT 406 (BN/WH) FOR AN OPEN 
    • Disconnect: Rear Window Wiper Fuse 39.
    • Key in OFF position.
    • Measure the resistance between rear window wiper motor C476-4, circuit 406 (BN/WH), harness side, and battery junction box (BJB) windshield wiper fuse cavity 39, circuit 406 (BN/WH), harness side.
      Fig 3: Checking Circuit 406 (BN/WH)
      G04659089Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes:  GO to  B5.

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

  5. B5 CHECK THE WIPER HIGH CURRENT RELAY 
    • Disconnect: Wiper High Current Relay.
    • Carry out the wiper high current relay component test. Refer to COMPONENT TESTING article for component testing.
    • Did the wiper high current relay pass the component test? 

    Yes:  GO to  B6.

    No:  INSTALL a new wiper high current relay. TEST the system for normal operation.

  6. B6 CHECK CIRCUIT 698 (RD) FOR VOLTAGE 
    • Measure the voltage between wiper high current relay pin 3, circuit 698 (RD), harness side and ground.
      Fig 4: Measuring Voltage Between Wiper High Current Relay Pin 3, Circuit 698 (RD), Harness Side & Ground
      G04659090Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes:  GO to  B7.

    No:  VERIFY BJB fuse 4 (50A) is OK. If OK, CHECK BJB wiper high current relay pin 3 for looseness, corrosion, dirt or damage. REPAIR the circuit or INSTALL a new BJB as necessary. TEST the system for normal operation.

  7. B7 CHECK BJB CIRCUIT 1672 (DB) FOR AN OPEN 
    • Connect a fused jumper wire between BJB wiper high current relay pin 3, circuit 698 (RD), harness side, and BJB wiper high speed relay pin 4, circuit 1672 (DB), harness side.
      Fig 5: Connecting Fused Jumper Wire Between BJB Wiper High Current Relay pin 3, Circuit 698 (RD), Harness Side & BJB Wiper High Speed Relay Pin 4, Circuit 1672 (DB), Harness Side
      G04659091Courtesy of FORD MOTOR CO.
    • Key in ON position.
    • Measure the voltage between BJB rear wiper fuse C39, circuit 1672 (DB) and ground.
      Fig 6: Measuring Voltage Between BJB Rear Wiper Fuse C39, Circuit 1672 (DB) & ground
      G04659092Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes:  GO to  B8.

    No:  CHECK BJB wiper high current relay pin 4, circuit 1672 (DB) and rear window wiper fuse 39 cavity, circuit 1672 (DB) for looseness, corrosion, dirt or damage. REPAIR the open circuit or INSTALL a new BJB as necessary. TEST the system for normal operation.

  8. B8 CHECK WIPER HIGH CURRENT RELAY CIRCUIT 1205 (BK) FOR GROUND 
    • Measure the resistance between BJB wiper high current relay pin 2, circuit 1205 (BK) and ground.
      Fig 7: Measuring Resistance Between BJB Wiper High Current Relay Pin 2, Circuit 1205 (BK) & Ground
      G04659093Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes:  GO to  B9.

    No:  CHECK BJB wiper high current relay pin 2 for looseness, corrosion, dirt or damage. REPAIR the open circuit or install a new BJB as necessary. TEST the system for normal operation.

  9. B9 CHECK CIRCUIT 296 (WH/PK) FOR VOLTAGE 
    • Key in ON position.
    • Measure the voltage between BJB wiper high current relay pin 1, circuit 296 (WH/PK), harness side and ground.
      Fig 8: Measuring Voltage Between BJB Wiper High Current Relay Pin 1, Circuit 296 (WH/PK), Harness Side & Ground
      G04659094Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes:  The system is operating normally at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal operation.

    No:  VERIFY SJB fuse 23 (7.5A) is OK. If OK, GO to  B10.

  10. B10 CHECK CIRCUIT 296 (WH/PK) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: SJB C2280a.
    • Measure the resistance between BJB wiper high current relay pin 1, circuit 296 (WH/PK), harness side and SJB C2280a-10, circuit 296 (WH/PK), harness side.
      Fig 9: Measuring Resistance Between BJB Wiper High Current Relay Pin 1, Circuit 296 (WH/PK), Harness Side & SJB C2280a-10, Circuit 296 (WH/PK), Harness Side
      G04659095Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes:  GO to  B11.

    No:  REPAIR the circuit or INSTALL a new BJB as necessary. TEST the system for normal operation.

  11. B11 CHECK CIRCUIT 1716 (GY/YE) FOR VOLTAGE 
    • Key in ON position.
    • Measure the voltage between SJB C2280b-4, circuit 1716 (GY/YE), harness side and ground.
      Fig 10: Measuring Voltage Between SJB C2280b-4, Circuit 1716 (GY/YE), Harness Side & Ground
      G04659096Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes:  INSTALL a new SJB. REFER to REMOVAL AND INSTALLATION . CLEAR the DTCs. TEST the system for normal operation.

    No:  REFER to PINPOINT TEST C: NO POWER IN RUN to diagnose the inoperative RUN/ACCESSORY circuit.

  12. B12 CHECK CIRCUIT 1205 (BK) FOR OPEN 
    • Key in OFF position.
    • Measure the resistance between rear window wiper C476-4, circuit 1205 (BK), harness side and ground.
      Fig 11: Measuring Resistance Between Rear Window Wiper C476-4, Circuit 1205 (BK), Harness Side & Ground
      G04659097Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes:  GO to  B13.

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

  13. B13 CHECK THE WIPER SWITCH 
    • Disconnect: Wiper Switch C202b.
    • Carry out the wiper switch component test. Refer to COMPONENT TESTING article for component testing.
    • Did the wiper switch pass the component test? 

    Yes:  GO to  B14.

    No:  INSTALL a new wiper switch. REFER to REMOVAL AND INSTALLATION .

  14. B14 CHECK WIPER SWITCH CIRCUIT 1205 (BK) FOR OPEN 
    • Measure the resistance between wiper switch C202b-7, circuit 1205 (BK), harness side and ground.
      Fig 12: Measuring Resistance Between Wiper Switch C202b-7, Circuit 1205 (BK), Harness Side & Ground
      G04659098Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes:  GO to  B15.

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

  15. B15 CHECK CIRCUITS 485 (PK/BK) AND 488 (DG) FOR OPENS 
    • Measure the resistance between the wiper switch C202b-8, circuit 488 (DG) harness side and the rear window wiper motor C476-2, circuit 488 (DG) harness side; and between the wiper switch C202b-10, circuit 485 (PK/BK) harness side and the rear window wiper motor C476-7, circuit 485 (PK/BK) harness side.
      Fig 13: Checking Circuits 485 (PK/BK) & 488 (DG)
      G04659099Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 

    Yes:  GO to  B16.

    No:  REPAIR the circuit(s). TEST the system for normal operation.

  16. B16 CHECK FOR CORRECT REAR WINDOW WIPER MOTOR OPERATION 
    • Disconnect the rear window wiper motor connector.
    • Check for:
      • corrosion.
      • pushed-out pins.
    • Connect the rear window wiper motor connectors and make sure they are seated 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 - WINDSHIELD . TEST the system for normal operation.

    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.

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