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.
Pinpoint Test Bl: Third Row Left SEATBELT Buckle Sensor: Notes
Refer to appropriate Supplemental Restraint System in OEM Wiring Diagrams article, for schematic and connector information.
Normal Operation and Fault Conditions
The RCM continuously monitors the third row left seatbelt buckle sensor circuits for the following faults:
- Open circuit
- Short to voltage
- Short to ground
- Current out of range
- Faulted third row left seatble buckle sensor
If a fault is detected, the RCM stores DTC B140E:11, B140E:12, B140E:13 or B140E:1D in memory. A faulted third row left seatbelt buckle sensor or a fault on the third row left seatbelt buckle sensor circuits does not illuminate the airbag warning indicator.
PPT BL RCM DTC FAULT TRIGGER CONDITIONS
| DTC | Description | Fault Trigger Conditions |
Possible Causes
- Wiring, terminals or connectors
- Third row left seatbelt buckle sensor
- RCM
Visual Inspection and Diagnostic Pre-checks
- Inspect for a damaged third row left seatbelt buckle.
- Inspect for damaged wiring harness(es).
- Inspect for loose or damaged connectors.
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.
No obligation. See pricing before you book.