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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 799 (Exterior Lighting) >> Diagnosis And Testing >> Autolamps >> Inspection and Verification

Inspection and Verification

WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the customer concern.
  2. Visually inspect the following for obvious signs of mechanical or electrical damage.
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Headlamp switch
    • Circuity
    • Light sensor
    • Smart junction box (SJB)
  3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
    NOTE: Make sure the headlamp switch is in the OFF position.
    NOTE: Make sure the multifunction switch is in the LOW BEAM position.
  4. If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
    • Check that the program card is correctly installed.
    • Check the connections to the vehicle.
    • Check the ignition switch position.
  5. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
  6. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
    • CAN or ISO circuit fault; all electronic control units no response/not equipped, refer to MODULE COMMUNICATIONS NETWORK .
    • No response/not equipped for SJB, refer to MULTIFUNCTION ELECTRONIC CONTROL MODULES .
    • System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out the self-test diagnostics for the SJB.
  7. If the DTCs retrieved are related to the concern, go to the SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) INDEX .
  8. If no DTCs related to the concern are retrieved, GO toSYMPTOM CHART .
    SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) INDEX

    DTC Description Source Action
    B1342 ECU is Faulted SJB CLEAR the DTCs. RETRIEVE the DTCs. If DTC B1342 is retrieved again, INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC CONTROL MODULES .
    B1472 Lamp Headlamp Input Circuit Short to Ground SJB GO to PINPOINT TEST H .
    B1692 Autolamp Delay Circuit Short to Ground SJB GO to PINPOINT TEST H .
    B1791 Autolamp Sensor Input Open Circuit SJB GO to PINPOINT TEST H .
    B1793 Autolamp Sensor Input Circuit Short to Ground SJB GO to PINPOINT TEST G .
    B2498 Headlamp Switch Multiple Signals Input Active SJB GO to PINPOINT TEST H .
    All other DTCs - SJB REFER to MULTIFUNCTION ELECTRONIC CONTROL MODULES .
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