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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 170 (Wiper System & Washer System - F150) >> Diagnosis And Testing >> Wipers and Washers >> Pinpoint Tests >> Pinpoint Test H: The Washer Pump is Inoperative Or Always On - Vehicles Equipped With Front Video Camera >> Pinpoint Test H: The Washer Pump Is Inoperative Or Always On - Vehicles Equipped With Front Video Camera

Pinpoint Test H: The Washer Pump Is Inoperative Or Always On - Vehicles Equipped With Front Video Camera

WARNING: This page is about a different car, the 2012 Ford Pickup. 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. H1 CHECK THE MULTIFUNCTION SWITCH (F_WASH_SW) AND (F_CAMRA_WASHSW) PIDs 
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - SCCM.
    • While monitoring the SCCM F_WASH_SW PID, place the multifunction switch into the windshield wiper WASH position.
    • While monitoring the SCCM F_CAMRA_WASHSW PID, rotate the front camera washer control to the WASH position.
    • Do each of the PIDs change to the ON state when the multifunction switch and front camera washer control are in the applicable WASH positions? 
      • Yes  : If a washer function is inoperative, GO to H2.

        If the windshield washer function is always on, GO to  H12.

        If the front camera washer function is always on, GO to  H13.

      • No  : INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES . TEST the system for normal operation. If the concern is still present, INSTALL a new SCCM. REFER to STEERING COLUMN SWITCHES . TEST the system for normal operation.
  2. H2 CHECK THE WINDSHIELD WASH FUNCTION 
    • Ignition ON.
    • Attempt to operate the windshield wash function.
    • Does the washer pump operate in the windshield WASH position? 
      • YES  : GO to  H8.
      • No  : GO to H3.
  3. H3 CHECK THE WASHER PUMP CONTROL CIRCUIT FOR AN OPEN 
    NOTE: The following step uses a test light to simulate normal circuit loads. Use only the test light recommended in the Special Tools table at the beginning of this article. To avoid connector terminal damage, use the Flex Probe Kit for the test light probe connection to the vehicle. Do not use the test light probe directly on any connector.
    • Ignition OFF.
    • Disconnect: Washer Pump Motor C137.
    • Connect a 12-volt incandescent test light between the positive battery post and the washer pump motor C137-1, circuit CRW24 (BU/WH), harness side.
      Fig 1: Checking Washer Pump Control Circuit For Open
      G07965880Courtesy of FORD MOTOR CO.
    • Does the test light illuminate? 
      • YES  : GO to  H6.
      • No  : GO to H4.
  4. H4 CHECK THE FRONT CAMERA WASHER RELAY (WINDSHIELD WASH) 
    • Disconnect: Front Camera Washer Relay.
    • Carry out the front camera washer relay component test. Refer to OEM WIRING DIAGRAMS for component testing.
    • Did the front camera washer relay pass the component test? 
      • YES  : GO to H5.
      • No  : INSTALL a new front camera washer relay. TEST the system for normal operation.
  5. H5 CHECK THE FRONT CAMERA WASHER RELAY GROUND CIRCUIT FOR AN OPEN 
    • Measure the resistance between the camera washer relay socket pin 4, circuit GD120 (BK/GN) and ground.
      Fig 2: Measuring Resistance Between Camera Washer Relay Socket Pin 4, Circuit GD120 (BK/GN) And Ground
      G07965881Courtesy of FORD MOTOR CO.
    • Is the resistance less than 3 ohms? 
      • YES  : REPAIR circuit CRW24 (BU/WH) for an open. TEST the system for normal operation.
      • No  : REPAIR circuit GD120 (BK/GN) for an open. TEST the system for normal operation.
  6. H6 CHECK THE WASHER PUMP CONTROL CIRCUIT FOR AN OPEN 
    NOTE: The following step uses a test light to simulate normal circuit loads. Use only the test light recommended in the Special Tools table at the beginning of this article. To avoid connector terminal damage, use the Flex Probe Kit for the test light probe connection to the vehicle. Do not use the test light probe directly on any connector.
    • Ignition ON.
    • Connect a 12-volt incandescent test light between the washer pump motor C137-1, circuit CRW24 (BU/WH), harness side and the washer pump motor C137-2, circuit CRW14 (GY), harness side.
      Fig 3: Checking Washer Pump Control Circuit For Open
      G07486186Courtesy of FORD MOTOR CO.
    • Observe the test light while placing the multifunction switch into the windshield WASH position.
    • Does the test light illuminate when WASH is selected? 
      • YES  : INSTALL a new washer pump. REFER to Washer Pump  . TEST the system for normal operation.
      • No  : GO to H7.
  7. H7 CHECK THE WASHER PUMP CONTROL CIRCUIT FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: Windshield Wiper Motor C125.
    • Measure the resistance between the washer pump C137-2, circuit CRW14 (GY), harness side and the windshield wiper motor C125-7, circuit CRW14 (GY), harness side.
      Fig 4: Measuring Resistance Between Washer Pump C137-2, Circuit CRW14 (GY) And Windshield Wiper Motor C125-7, Circuit CRW14 (GY)
      G07414238Courtesy of FORD MOTOR CO.
    • Is the resistance less than 3 ohms? 
      • YES  : INSTALL a new windshield wiper motor. REFER to Wiper Motor  . TEST the system for normal operation.
      • No  : REPAIR the circuit. TEST the system for normal operation.
  8. H8 CHECK THE WINDSHIELD WIPER MOTOR FOR AN INTERNAL OPEN 
    NOTE: The following step uses a test light to simulate normal circuit loads. Use only the test light recommended in the Special Tools table at the beginning of this article. To avoid connector terminal damage, use the Flex Probe Kit for the test light probe connection to the vehicle. Do not use the test light probe directly on any connector.
    • Ignition OFF.
    • Disconnect: Washer Pump Motor C137.
    • Connect a 12-volt incandescent test light between the positive battery post and the washer pump motor C137-2, circuit CRW14 (GY), harness side.
      Fig 5: Checking Windshield Wiper Motor For Internal Open
      G07965884Courtesy of FORD MOTOR CO.
    • Does the test light illuminate? 
      • YES  : GO to H9.
      • No  : INSTALL a new windshield wiper motor. REFER to Wiper Motor  . TEST the system for normal operation.
  9. H9 CHECK THE FRONT CAMERA WASHER RELAY (INOPERATIVE) 
    • Disconnect: Front Camera Washer Relay.
    • Carry out the front camera washer relay component test. Refer to OEM WIRING DIAGRAMS for component testing.
    • Did the front camera washer relay pass the component test? 
      • YES  : GO to H10.
      • No  : INSTALL a new front camera washer relay. TEST the system for normal operation.
  10. H10 CHECK FOR VOLTAGE TO THE FRONT CAMERA WASHER RELAY 
    • Ignition ON.
    • Measure the voltage between the front camera washer relay socket pin 1, circuit CBB54 (VT/OG) and ground; and between the front camera washer relay socket pin 5, circuit SBB41 (RD) and ground.
      Fig 6: Measuring Voltage Between Front Camera Washer Relay Socket Pin 1, Circuit CBB54 (VT/OG) And Ground
      G07965885Courtesy of FORD MOTOR CO.
    • Are the voltages greater than 11? 
      • YES  : GO to H11.
      • No  : VERIFY BJB fuses 41 (15A) and 54 (5A) are OK. If OK, REPAIR the circuit in question. TEST the system for normal operation. If not OK, REFER to the Wiring Diagrams information to identify the possible causes of the circuit short.
  11. H11 CHECK THE FRONT CAMERA WASHER RELAY CONTROL CIRCUIT FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: Windshield Wiper Motor C125.
    • Measure the resistance between the front camera washer relay socket pin 3, circuit CRW34 (BU/BN) and the windshield wiper motor C125-12, circuit CRW34 (BU/BN), harness side.
      Fig 7: Measuring Resistance Between Front Camera Washer Relay Socket Pin 3 And Windshield Wiper Motor C125-12
      G07965886Courtesy of FORD MOTOR CO.
    • Is the resistance less than 3 ohms? 
      • YES  : INSTALL a new windshield wiper motor. REFER to Wiper Motor  . TEST the system for normal operation.
      • No  : REPAIR the circuit. TEST the system for normal operation.
  12. H12 CHECK THE WASHER PUMP SUPPLY CIRCUIT FROM THE WIPER MOTOR FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: Windshield Wiper Motor C125.
    • Ignition ON.
    • Does the washer pump continue to operate? 
      • YES  : REPAIR circuit CRW14 (GY) for a short to voltage. TEST the system for normal operation.
      • No  : INSTALL a new windshield wiper motor. REFER to Wiper Motor .
  13. H13 CHECK THE FRONT CAMERA WASHER RELAY OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: Front Camera Washer Relay.
    • Ignition ON.
    • Does the washer pump continue to operate? 
      • YES  : REPAIR circuit CRW24 (BU/WH) for a short to voltage. TEST the system for normal operation.
      • No  : GO to H14.
  14. H14 CHECK THE FRONT CAMERA WASHER RELAY (ALWAYS ON) 
    • Ignition OFF.
    • Carry out the front camera washer relay component test. Refer to OEM WIRING DIAGRAMS for component testing.
    • Did the front camera washer relay pass the component test? 
      • YES  : GO to H15.
      • No  : INSTALL a new front camera washer relay. TEST the system for normal operation.
  15. H15 CHECK THE FRONT CAMERA WASHER RELAY CONTROL CIRCUIT FOR A SHORT TO GROUND 
    • Disconnect: Windshield Wiper Motor C125.
    • Measure the resistance between the windshield wiper motor C125-12, circuit CRW34 (BU/BN), harness side.
      Fig 8: Measuring Resistance Between Windshield Wiper Motor C125-12, Circuit CRW34 (BU/BN)
      G07965887Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10, 000 ohms? 
      • YES  : REPAIR the circuit. TEST the system for normal operation.
      • No  : INSTALL a new windshield wiper motor. REFER to Wiper Motor .
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