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 Tests: Notes
The Lane Keeping System Does Not Turn On Or Activate
Refer to Vehicle Emergency Messaging System for schematic and connector information.
Normal Operation and Fault Conditions
REFER to: Lane Keeping System - System Operation and Component Description .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B13A6:14 | Lane Departure Warning (LDW) Switch Input: Circuit Short To Ground or Open | An on-demand and continuous memory DTC that sets in the IPMA if the IPMA detects the lane keeping system switch has been pressed for more than 200 miliseconds during the self-test or 1 second during normal operation. |
Possible Causes
- IPMA overheating condition
- Communication network concern
- Dirty, scratched or obstructed windshield and/or camera
- Lane keeping system switch
- SECM concern
- SCCM concern
- SASM concern
- BCM concern
- PCM concern
- RCM concern
- IPC concern
- CCM concern
- IPMA (integral to the interior rear view mirror)
Visual Inspection and Diagnostic Pre-Checks
- Certain lane keeping system concerns can be caused by the IPMA being to cold or overheating due to heavy sunload. Prior to diagnosing a lane keeping system concern, allow the vehicle to warm up or remove the vehicle from direct sunlight. RECHECK after 10 minutes.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.