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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 2086 (Exterior Lighting System) >> Diagnosis And Testing >> Autolamps >> Pinpoint Tests >> Pinpoint Test G: The Autolamps Are Inoperative >> Pinpoint Test G: The AUTOLAMPS Are Inoperative

Pinpoint Test G: The AUTOLAMPS Are Inoperative

WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 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. G1 CHECK THE MANUAL HEADLAMP OPERATION 
    • Place the headlamp switch in the HEADLAMPS ON position.
    • Do the headlamps and parking lamps operate correctly? 
    1. Yes  : GO to G2.
    2. No  : REFER to HEADLAMPS  or PARKING, REAR AND LICENSE PLATE LAMPS  in this service information.
  2. G2 CHECK FOR VOLTAGE TO THE LIGHT SENSOR 
    • Ignition OFF.
    • Disconnect: Light Sensor C286 or C287.
    • Ignition ON.
    • Place the headlamp switch in the AUTOLAMPS ON position.
    • For vehicles with automatic temperature control, measure the voltage between the light sensor C286-2, circuit VLF14 (BU/BN), harness side and ground.
      Fig 1: Measuring Voltage Between Light Sensor C286-2, Circuit VLF14 (BU/BN), Harness Side And Ground
      G06065236Courtesy of FORD MOTOR CO.
    • For vehicles with manual temperature control, measure the voltage between the light sensor C287-A, circuit VLF14 (BU/BN), harness side and ground.
      Fig 2: Measuring Voltage Between Light Sensor C287-A, Circuit VLF14 (BU/BN), Harness Side And Ground
      G06065237Courtesy of FORD MOTOR CO.
    • Is the voltage approximately 5 volts? 
    1. Yes  : INSTALL a new light sensor. REFER to LIGHT SENSOR  in this service information. TEST the system for normal operation.
    2. No  : GO to G3.
  3. G3 CHECK FOR CORRECT SJB OPERATION 
    • 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? 
    1. Yes  : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES -- FUSION, MILAN & MKZ article. TEST the system for normal operation.
    2. No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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