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.
2015 Ford Transit-350 HD Base, Van Cargo ExtendedFACTORY OEM SERVICE PROCEDURE
Interior Lighting System DTCS
DTC INDEX
| DTC | Description | Action |
|---|---|---|
| B1187:92 | Trunk Motor: Performance or Incorrect Operation | If the courtesy lamps are inoperative from the rear door, GO to Pinpoint Test A If the courtesy lamps are always on, GO to Pinpoint Test C |
| B11EA:92 | Right Rear Door Ajar Switch: Performance or Incorrect Operation |
NOTE:
This DTC only sets when running a self-test on the BCM with the right rear door open. If the DTC is received with the right rear door closed, GO to Pinpoint Test C |
| B1D13:12 | Interior Lights Circuit "A": Circuit Short To Battery | GO to Pinpoint Test E |
| B1D14:12 | Interior Lights Circuit "B": Circuit Short To Battery | GO to Pinpoint Test E |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.