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Home >> Ford >> 2000 >> Contour SE, 2.0 3, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2326 (Exterior Lighting System) >> Diagnosis And Testing >> Autolamps >> Pinpoint Tests >> Pinpoint Test H: The Autolamps Are On Continuously >> Pinpoint Test H: The AUTOLAMPS Are On Continuously

Pinpoint Test H: The AUTOLAMPS Are On Continuously

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. H1 CHECK THE SJB AUTOLAMP ON REQUEST PID 
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: SJB DataLogger.
      NOTE: Make sure the headlamp switch is in the OFF position.
    • While placing the headlamp switch in the AUTOLAMPS ON and then OFF position, monitor the SJB headlamp switch PID (HDLMP_AUT_CKT).
    • Does the PID indicate ON with the headlamp switch in the AUTOLAMPS ON position and OFF when the headlamp switch is in the OFF position? 
    • Yes:  GO to  H5.
    • No:  GO to  H2.
  2. H2 CHECK FOR A VOLTAGE SIGNAL TO THE HEADLAMP SWITCH 
    • Ignition OFF.
    • Disconnect: Headlamp Switch C205.
    • Measure the voltage between the headlamp switch C205-4, circuit CLF19 (VT/GN), harness side and ground.
      Fig 1: Measuring Voltage Between Headlamp Switch C205-4 & Ground
      G06258162Courtesy of FORD MOTOR CO.
    • Is voltage greater than 10 volts? 
    • Yes:  INSTALL a new headlamp switch. REFER to Removal and Installation . TEST the system for normal operation.
    • No:  GO to  H3.
  3. H3 CHECK THE AUTOLAMPS REQUEST INPUT CIRCUIT FOR A SHORT TO GROUND 
    • Disconnect: SJB C2280b.
    • Measure the resistance between the headlamp switch C205-4, circuit CLF19 (VT/GN), harness side and ground.
      Fig 2: Measuring Resistance Between Headlamp Switch C205-4 & Ground
      G06065234Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    • Yes:  GO to  H4.
    • No:  REPAIR circuit CLF19 (VT/GN) for a short to ground. TEST the system for normal operation.
  4. H4 CHECK THE AUTOLAMPS REQUEST INPUT CIRCUIT FOR AN OPEN 
    • Measure the resistance between the headlamp switch C205-4, circuit CLF19 (VT/GN), harness side and the SJB C2280b-50, circuit CLF19 (VT/GN), harness side.
      Fig 3: Measuring Resistance Between Headlamp Switch C205-4 & SJB C2280B-50
      G06065235Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to  H15.
    • No:  REPAIR circuit CLF19 (VT/GN) for an open. TEST the system for normal operation.
  5. H5 USE THE RECORDED DTCs FROM THE SJB SELF-TEST 
    • Check the recorded results from the SJB self-test.
    • Was DTC B2008, B1791 or B1793 recorded? 
    • Yes:  For DTC B2008, GO to  H7.

      For DTC B1791, GO to  H9.

      For DTC B1793, GO to  H13.

    • No:  GO to  H6.
  6. H6 CHECK FOR VOLTAGE TO THE LIGHT SENSOR (NO DTCs) 
    • Ignition OFF.
    • Disconnect: Light Sensor C286.
    • Ignition ON.
    • Place the headlamp switch in the AUTOLAMPS ON position.
    • Measure the voltage between the light sensor C286-2, circuit VLF14 (BU/BN), harness side and ground.
      Fig 4: Measuring Voltage Between Light Sensor C286-2 & Ground
      G06065236Courtesy of FORD MOTOR CO.
    • Is the voltage approximately 5 volts? 
  7. H7 CHECK THE WIPER/WASHER MODULE 
    • Ignition OFF.
    • Disconnect: Wiper/Washer Module C2157.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: SJB Self-Test.
    • Repeat the SJB self-test.
    • Is DTC B2008 still present? 
    • Yes:  GO to  H8.
    • No:  INSTALL a new wiper/washer module. REFER to REMOVAL AND INSTALLATION . CLEAR the DTCs. REPEAT the self-test.
  8. H8 CHECK THE WIPERS ON INPUT CIRCUIT FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Disconnect: SJB C2280f.
    • Measure the resistance between the wiper/washer module C2157-2, circuit CRW01 (WH), harness side and ground.
      Fig 5: Measuring Resistance Between Wiper/Washer Module C2157-2 & Ground
      G06257302Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    • Yes:  GO to  H15.
    • No:  REPAIR circuit CRW01 (WH) for a short to ground. CLEAR the DTCs. REPEAT the self-test.
  9. H9 CHECK FOR VOLTAGE TO THE LIGHT SENSOR (DTC B1791) 
    • Ignition OFF.
    • Disconnect: Light Sensor C286.
    • Ignition ON.
    • Place the headlamp switch in the AUTOLAMPS ON position.
    • Measure the voltage between the light sensor C286-2, circuit VLF14 (BU/BN), harness side and ground.
      Fig 6: Measuring Voltage Between Light Sensor C286-2 & Ground
      G06065236Courtesy of FORD MOTOR CO.
    • Is the voltage approximately 5 volts? 
    • Yes:  GO to  H12.
    • No:  GO to  H10.
  10. H10 CHECK THE LIGHT SENSOR INPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Place the headlamp switch in the OFF position.
    • Disconnect: SJB C2280b.
    • Ignition ON.
    • Measure the voltage between the light sensor C286-2, circuit VLF14 (BU/BN), harness side and ground.
      Fig 7: Measuring Voltage Between Light Sensor C286-2 & Ground
      G06065236Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes:  REPAIR circuit VLF14 (BU/BN) for a short to voltage. CLEAR the DTCs. REPEAT the self-test.
    • No:  GO to  H11.
  11. H11 CHECK THE LIGHT SENSOR INPUT CIRCUIT FOR AN OPEN 
    • Ignition OFF.
    • Measure the resistance between the light sensor C286-2, circuit VLF14 (BU/BN), harness side and the SJB C2280b-46, circuit VLF14 (BU/BN), harness side.
      Fig 8: Measuring Resistance Between Light Sensor C286-2 & SJB C2280B-46
      G06065243Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to  H15.
    • No:  REPAIR circuit VLF14 (BU/BN) for an open. CLEAR the DTCs. REPEAT the self-test.
  12. H12 CHECK FOR VOLTAGE TO THE LIGHT SENSOR USING THE CONNECTOR GROUND 
    • Measure the voltage between the light sensor C286-2, circuit VLF14 (BU/BN), harness side and the light sensor C286-4, circuit GD116 (BK/VT), harness side.
      Fig 9: Measuring Voltage Between Light Sensor C286-2 & C286-4
      G06075646Courtesy of FORD MOTOR CO.
    • Is the voltage approximately 5 volts? 
    • Yes:  INSTALL a new light sensor. REFER to Removal and Installation . CLEAR the DTCs. REPEAT the self-test.
    • No:  REPAIR circuit GD116 (BK/VT) for an open. CLEAR the DTCs. REPEAT the self-test.
  13. H13 CHECK FOR VOLTAGE TO THE LIGHT SENSOR (DTC B1793) 
    • Disconnect: Light Sensor C286.
    • Ignition ON.
    • Place the headlamp switch in the AUTOLAMPS ON position.
    • Measure the voltage between the light sensor C286-2, circuit VLF14 (BU/BN), harness side and ground.
      Fig 10: Measuring Voltage Between Light Sensor C286-2 & Ground
      G06065236Courtesy of FORD MOTOR CO.
    • Is the voltage approximately 5 volts? 
  14. H14 CHECK THE LIGHT SENSOR INPUT CIRCUIT FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Disconnect: SJB C2280b.
    • Measure the resistance between the light sensor C286-2, circuit VLF14 (BU/BN), harness side and ground.
      Fig 11: Measuring Resistance Between Light Sensor C286-2 & Ground
      G06065249Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    • Yes:  GO to  H15.
    • No:  REPAIR circuit VLF14 (BU/BN) for a short to ground. CLEAR the DTCs. REPEAT the self-test.
  15. H15 CHECK FOR CORRECT SJB OPERATION 
    • Ignition OFF.
    • Disconnect all the SJB connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the SJB 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 SJB. REFER to INSTALLATION . 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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