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Home >> Ford >> 2005 >> Escape Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 465 (Exterior Lighting System) >> Diagnosis And Testing >> Autolamps >> Pinpoint Tests >> Pinpoint Test H: The Autolamps Are Inoperative >> Pinpoint Test H: The AUTOLAMPS Are Inoperative

Pinpoint Test H: The AUTOLAMPS Are Inoperative

WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
  1. H1 USE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCs) FROM THE SJB SELF-TEST 
    • Using the recorded results from the SJB self-test:
    • Were any DTCs recorded? 

    Yes:  If DTC B1693, GO to  H2.

    If DTC B1791 or B1793, GO to  H6.

    All others, REFER to the SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) INDEX  for correct diagnostics.

    No:  GO to  H2.

  2. H2 CHECK THE HEADLAMP OPERATION 
    • Key in ON position.
    • Place the multifunction switch to the headlamps ON position while observing the headlamps.
    • Do the headlamps illuminate? 

    Yes:  GO to  H3.

    No:  REFER to HEADLAMPS  to diagnose the headlamps.

  3. H3 CHECK THE MULTIFUNCTION SWITCH 

    Yes:  GO to  H4.

    No:  INSTALL a new multifunction switch. REFER to STEERING COLUMN MULTIFUNCTION SWITCH . CLEAR the DTCs. REPEAT the self-test.

  4. H4 CHECK CIRCUIT 1399 (DB/WH) FOR VOLTAGE 
    • Key in ON position.
    • Measure the voltage between the multifunction switch C2080-14, circuit 1399 (DB/WH), harness side and ground.
      Fig 1: Checking Circuit 1399 (DB/WH) For Voltage
      G04621964Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes:  GO to  H6.

    No:  GO to  H5.

  5. H5 CHECK CIRCUIT 1399 (DB/WH) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: SJB C2280e.
    • Measure the resistance between the multifunction switch C2080-14, circuit 1399 (DB/WH), harness side and the SJB C2280e-16, circuit 1399 (DB/WH), harness side.
      Fig 2: Checking Circuit 1399 (DB/WH) For An Open
      G04621965Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes:  GO to  H8.

    No:  REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

  6. H6 CHECK FOR VOLTAGE TO THE LIGHT SENSOR 
    • Key in OFF position.
    • Disconnect: Light Sensor C287.
    • Key in ON position.
    • Place the multifunction switch in the autolamps ON position.
    • Measure the voltage between the light sensor C287-C, circuit 7 (LG/YE), harness side and ground.
      Fig 3: Checking For Voltage To Light Sensor
      G04621966Courtesy of FORD MOTOR CO.
    • Is the voltage approximately 5 volts? 

    Yes:  INSTALL a new light sensor. REFER to LIGHT SENSOR . CLEAR the DTCs. REPEAT the self-test.

    No:  GO to  H7.

  7. H7 CHECK CIRCUIT 7 (LG/YE) FOR A SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: SJB C2280e.
    • Measure the resistance between the light sensor C287-C, circuit 7 (LG/YE), harness side and ground.
      Fig 4: Checking Circuit 7 (LG/YE) For A Short To Ground
      G04621967Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 

    Yes:  GO to  H8.

    No:  REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

  8. H8 CHECK FOR CORRECT SJB OPERATION 
    • Key in OFF position.
    • Disconnect all the SJB connectors.
    • Check for:
      • corrosion
      • 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 SMART JUNCTION BOX (SJB) . 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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