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Inspection and Verification

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. Verify the customer concern.
  2. Visually inspect for obvious signs of electrical damage.
    VISUAL INSPECTION CHART

    Electrical
    • Circuitry
    • Key-in-ignition warning switch (part of the ignition switch)
    • Instrument cluster
    • 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.
  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 instrument cluster, refer to INSTRUMENT CLUSTER . For the SJB, refer to MULTIFUNCTION ELECTRONIC 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 to SYMPTOM CHART .
SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) INDEX

DTC Description Source Action
B1319 Driver Door Ajar Switch/Circuit Failure SJB REFER to INTERIOR LIGHTING .
B1327 Passenger Door Ajar Circuit Failure SJB REFER to INTERIOR LIGHTING .
B1335 Door Ajar - Right Rear (RR) Switch/Circuit Failure SJB REFER to INTERIOR LIGHTING .
B1342 ECU is Defective SJB INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation.
B1352 Ignition Key-In Circuit Failure SJB GO to PINPOINT TEST B .
B1519 Hood Ajar Switch/Circuit Failure SJB GO to PINPOINT TEST A .
B1571 Door Ajar - Left Rear (LR) Switch/Circuit Failure SJB REFER to INTERIOR LIGHTING .
B2077 Liftgate (Tailgate) Ajar Switch/Circuit Failure SJB REFER to INTERIOR LIGHTING .
C1769 Park Brake Switch/Circuit Short-to-Ground SJB REFER to INSTRUMENT CLUSTER .
All other DTCs - SJB REFER to MULTIFUNCTION ELECTRONIC MODULES .
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