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Pinpoint Test

NOTE: The following Pinpoint Test 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 section. 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.
  1. CHECK THE WASHER SWITCH FRONT (F_WASH_SW) AND WASHER SWITCH REAR (R_WASH_SW) Parameter Identifications (PIDs)
    1. Ignition ON.
    2. Using a scan tool, view Steering Column Control Module (SCCM) Parameter Identifications (PIDs).
    3. While monitoring the Steering Column Control Module (SCCM) Parameter Identification (PID) F_WASH_SW, place the wiper/washer switch into the windshield wiper WASH position.
    4. While monitoring the Steering Column Control Module (SCCM) Parameter Identification (PID) R_WASH_SW, place the wiper/washer switch into the rear window wiper WASH position.
      • Do each of the Parameter Identifications (PIDs) change to the ON state when the wiper/washer switch is in the applicable WASH positions? 
  2. CHECK THE WINDSHIELD WASH FUNCTION
    1. Place the wiper/washer switch in the windshield wiper WASH position.
      • Does the washer pump operate in the windshield WASH position? 
      • Yes:  GO to 9  on page 6.
      • No:  GO to 3  on page 3.
  3. CHECK THE WASHER PUMP CONTROL CIRCUIT FOR AN OPEN
    1. Ignition OFF.
    2. Disconnect: Washer Pump Motor.
    3. Measure:
      Fig 1: Checking Washer Pump Control Circuit For Open
      G07429551Courtesy of FORD MOTOR CO.
      • Does the test light illuminate? 
      • Yes:  GO to 6  on page 4.
      • No:  GO to 4  on page 4.
  4. CHECK THE REAR WASHER RELAY GROUND CIRCUIT FOR AN OPEN
    1. Disconnect: Rear Washer Relay.
    2. Measure:
      Fig 2: Checking Rear Washer Relay Ground Circuit For Open
      G07429552Courtesy of FORD MOTOR CO.
      • Is the resistance less than 3 ohms? 
      • Yes:  GO to 5  on page 4.
      • No:  REPAIR the circuit.
  5. CHECK THE REAR WASHER RELAY
    1. Carry out the Relay - Micro International Organization for Standardization (ISO) component test. Refer to WIPER/WASHER for component testing.
      • Did the rear washer relay pass the component test? 
      • Yes:  REPAIR circuit CRW23 (VT/GN) for an open.
      • No:  INSTALL a new rear washer relay.
  6. CHECK THE WASHER PUMP CONTROL CIRCUIT FOR AN OPEN
    1. Ignition ON.
    2. Measure:
      Fig 3: Checking Washer Pump Control Circuit For Open
      G07429553Courtesy of FORD MOTOR CO.
    3. Observe the test light while placing the wiper/washer 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 .
      • No:  GO to 7  on page 5.
  7. CHECK THE WASHER PUMP CONTROL CIRCUIT FOR A OPEN
    1. Ignition OFF.
    2. Disconnect: Windshield Wiper Motor.
    3. Measure:
      Fig 4: Checking Washer Pump Control Circuit For Open
      G07429554Courtesy of FORD MOTOR CO.
      • Is the resistance less than 3 ohms between the washer pump and windshield wiper motor? 
      • Yes:  GO to 8  on page 6.
      • No:  REPAIR the circuit.
  8. CHECK THE WASHER PUMP CONTROL CIRCUIT FOR A SHORT TO GROUND
    1. Ignition OFF.
    2. Disconnect: Windshield Wiper Motor
    3. Measure:
      Fig 5: Checking Washer Pump Control Circuit For Short To Ground
      G07429555Courtesy of FORD MOTOR CO.
      • Is the resistance greater than 10,000 ohms between the washer pump and ground? 
  9. CHECK THE WASHER PUMP CONTROL CIRCUIT FOR AN OPEN
    1. Ignition OFF.
    2. Disconnect: Washer Pump Motor.
    3. Measure:
      Fig 6: Checking Washer Pump Control Circuit For Open
      G07429556Courtesy of FORD MOTOR CO.
      • Does the test light illuminate? 
  10. CHECK FOR VOLTAGE TO THE REAR WASHER RELAY (COIL SIDE)
    1. Ignition OFF.
    2. Disconnect: Rear Washer Relay.
    3. Ignition ON.
    4. Measure:
      Fig 7: Checking For Voltage To Rear Washer Relay (Coil Side)
      G07429557Courtesy of FORD MOTOR CO.
      • Is the voltage greater than 11 volts? 
      • Yes:  GO to 11  on page 8.
      • No:  VERIFY Battery Junction Box (BJB) fuse 10 (10A) is OK. If OK, REPAIR the circuit.

        If not OK, REFER to SYSTEM WIRING DIAGRAMS to identify the possible causes of the circuit short.

  11. CHECK FOR VOLTAGE TO THE REAR WASHER RELAY (SWITCH SIDE)
    1. Measure:
      Fig 8: Checking For Voltage To Rear Washer Relay (Switch Side)
      G07429558Courtesy of FORD MOTOR CO.
      • Is the voltage greater than 11 volts? 
      • Yes:  GO to 12  on page 8.
      • No:  VERIFY Battery Junction Box (BJB) fuse 82 (15A) is OK. If OK, REPAIR the circuit.

        If not OK, REFER to the SYSTEM WIRING DIAGRAMS to identify the possible causes of the circuit short.

  12. CHECK THE REAR WASHER RELAY
    1. Ignition OFF.
    2. Carry out the Relay - Micro International Organization for Standardization (ISO) component test. Refer to SYSTEM WIRING DIAGRAMS for component testing.
      • Did the rear washer relay pass the component test? 
      • Yes:  GO to 13  on page 8.
      • No:  INSTALL a new rear washer relay.
  13. CHECK THE REAR WASHER RELAY CONTROL CIRCUIT FOR AN OPEN
    1. Disconnect: Windshield Wiper Motor.
    2. Measure:
      Fig 9: Checking Rear Washer Relay Control Circuit For Open
      G07429559Courtesy of FORD MOTOR CO.
      • Is the resistance less than 3 ohms? 
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