Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2005TAURUS SEL, 4D SEDANREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 579 (INTERIOR LIGHTING SYSTEM)DIAGNOSIS AND TESTINGINTERIOR LIGHTINGINSPECTION AND VERIFICATION
2005 Ford Taurus SEL, 4D Sedan
Inspection and Verification
2005 Ford Taurus SEL, 4D SedanSECTION Inspection and Verification
WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
- Verify the customer concern.
- Visually inspect the following for obvious signs of electrical damage.VISUAL INSPECTION TABLE
Electrical - Smart junction box (SJB) fuse 2 (15A)
- Circuitry
- Loose or corroded connections
- Lamp(s)
- Dimmer switch
- Door ajar switches
- SJB
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, connect the diagnostic tool to the data link connector 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.
- If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
- Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
- SCP, ISO or UBP circuits fault; all electronic control units no response/not equipped, refer to PINPOINT TEST L: NO INTERNATIONAL STANDARDS ORGANIZATION (ISO) 9141 COMMUNICATIONS NETWORK COMMUNICATION .
- No response/not equipped for SJB, refer to PINPOINT TEST A: NO COMMUNICATION WITH THE SMART JUNCTION BOX (SJB) .
- 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.
- If the DTCs retrieved are related to the concern, go to the SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) INDEX .
- If no DTCs related to the concern are retrieved, GO to SYMPTOM TABLE .
SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) INDEX
| DTC | Description | Action |
|---|---|---|
| B1320 | Driver Door Ajar Circuit Open | GO to PINPOINT TEST E . |
| B1328 | Passenger Door Ajar Circuit Open | GO to PINPOINT TEST E . |
| B1336 | Door Ajar RR Circuit Open | GO to PINPOINT TEST E . |
| B1572 | Door Ajar LR Circuit Open | GO to PINPOINT TEST E . |
| B1688 | Dome Lamp Input Circuit Short To Ground | GO to PINPOINT TEST E . |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.