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Home >> Ford >> 2012 >> Explorer Limited, 3.5 8, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 167 (Wiper System & Washer System) >> Diagnosis And Testing >> Wipers and Washers >> Pinpoint Tests >> Pinpoint Test A: The Wipers Are Inoperative >> Pinpoint Test A: The Wipers Are Inoperative

Pinpoint Test A: The Wipers Are Inoperative

WARNING: This page is about a different car, the 2013 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) from the Flex Probe Kit when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. A1 CHECK THE WINDSHIELD WIPER MOTOR FOR VOLTAGE 
    • Disconnect: Wiper Motor C125.
    • Ignition ON.
    • Measure the voltage between ground and wiper motor:
      • C125-5, circuit CRW03 (VT/WH), harness side.
      • C125-8, circuit CBP45 (YE), harness side.
        Fig 1: Checking Windshield Wiper Motor For Voltage
        G06071205Courtesy of FORD MOTOR CO.
    • Are the voltages greater than 10 volts? 
    • Yes  : GO to  A6.
    • No  : GO to A2.
  2. A2 CHECK THE WIPER RELAY 
    • Ignition OFF.
    • Disconnect: Wiper Relay.
    • Carry out the Micro ISO Relay component test for the wiper relay. Refer to OEM WIRING DIAGRAMS COMPONENT TESTING for component testing .
    • Did the wiper relay pass the component test? 
    • Yes  : GO to A3.
    • No  : INSTALL a new wiper relay. TEST the system for normal operation.
  3. A3 CHECK THE VOLTAGE TO THE WIPER RELAY COIL 
    • Ignition ON.
    • Measure the voltage between Battery Junction Box (BJB) wiper relay pin 86, circuit CBP45 (YE), harness side and ground.
      Fig 2: Measuring Voltage Between Battery Junction Box (BJB) Wiper Relay Pin 86, Circuit CBP45 (YE) And Ground
      G06393202Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes  : GO to A4.
    • No  : VERIFY Smart Junction Box (SJB) fuse 45 (5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the OEM WIRING DIAGRAMS to identify the possible causes of the circuit short. TEST the system for normal operation.
  4. A4 CHECK THE VOLTAGE TO THE WIPER RELAY SWITCH 
    • Measure the voltage between BJB wiper relay pin 30, circuit SBB09 (RD), harness side and ground.
      Fig 3: Measuring Voltage Between BJB Wiper Relay Pin 30, Circuit SBB09 (RD) And Ground
      G06393203Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes  : GO to A5.
    • No  : VERIFY BJB fuse 9 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the OEM WIRING DIAGRAMS to identify the possible causes of the circuit short. TEST the system for normal operation.
  5. A5 CHECK THE GROUND TO THE WIPER RELAY COIL 
    • Measure the resistance between BJB wiper relay pin 85, circuit GD129 (BK/YE), harness side and ground.
      Fig 4: Measuring Resistance Between BJB Wiper Relay Pin 85, Circuit GD129 (BK/YE) And Ground
      G06393204Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : REPAIR open in circuit CRW03 (VT/WH). TEST the system for normal operation.
    • No  : REPAIR open in circuit GD129 (BK/YE). TEST the system for normal operation.
  6. A6 CHECK WIPER MOTOR CIRCUITS GD129 (BK/YE) AND GD123 (BK/GY) FOR AN OPEN 
    • Ignition OFF.
    • Measure the resistance between ground and wiper motor:
      • C125-3, circuit GD129 (BK/YE), harness side.
      • C125-6, circuit GD123 (BK/GY), harness side.
        Fig 5: Checking Wiper Motor Circuits GD129 (BK/YE) And GD123 (BK/GY) For Open
        G06077651Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    • Yes  : GO to A7.
    • No  : REPAIR the circuit(s). TEST the system for normal operation.
  7. A7 CHECK THE MULTIFUNCTION SWITCH 
    • Disconnect: Multifunction Switch C202.
    • Carry out the Multifunction Switch component test. Refer to OEM WIRING DIAGRAMS COMPONENT TESTING for component testing for component testing.
    • Did the multifunction switch pass the component test? 
  8. A8 CHECK CIRCUIT GD116 (BK/VT) FOR AN OPEN 
    • Measure the resistance between multifunction switch C202-15, circuit GD116 (BK/VT), harness side and ground.
      Fig 6: Measuring Resistance Between Multifunction Switch C202-15, Circuit GD116 (BK/VT) And Ground
      G06071210Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to A9.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  9. A9 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  : INSTALL a new wiper motor. REFER to WIPER MOTOR .
    • 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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