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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 mechanical or electrical damage
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Interior lamps
    • Map lamps
    • Cargo lamp
    • Door ajar switches (part of the door latches)
    • Liftgate ajar switch (part of the liftgate latch)
    • Liftgate glass ajar switch (part of the liftgate window latch)
    • Vanity lamps
    • Battery junction box (BJB) fuse(s):
      • 2 (25A)
      • 3 (25A)
    • Smart junction box (SJB)
    • Circuitry
    • Interior lamp
    • Map lamp
    • Cargo lamp
    • Vanity lamps
  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 UBP circuits fault; all electronic control units no response/not equipped, refer to MODULE COMMUNICATIONS NETWORK .
    • No response/not equipped for 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
B1314 Battery Saver Relay Coil Circuit Open SJB GO to PINPOINT TEST A .
B1316 Battery Saver Relay Coil Shorted To Ground SJB GO to PINPOINT TEST A .
B1319 Driver Door Ajar Circuit Failure SJB GO to PINPOINT TEST B .
B1327 Passenger Door Ajar Circuit Failure SJB GO to PINPOINT TEST B .
B1335 Door Ajar RR Circuit Failure SJB GO to PINPOINT TEST B .
B1372 Illuminated Entry Relay Circuit Open SJB GO to PINPOINT TEST A .
B1374 Illuminated Entry Relay Short To Ground SJB GO to PINPOINT TEST B .
B1474 Battery Saver - Interior Lighting Power Circuit Short To Battery SJB GO to PINPOINT TEST A .
B1571 Door Ajar LR Circuit Failure SJB GO to PINPOINT TEST B .
B2077 Liftgate Ajar Switch Circuit Failure SJB GO to PINPOINT TEST B .
B2902 Rear Window Ajar Switch Circuit Failure SJB GO to PINPOINT TEST B .
- All other DTCs SJB REFER to MULTIFUNCTION ELECTRONIC MODULES .
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