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.
Circuit Description
The left door lock/unlock switch provides lock input on Red/Black wire to Left Door Control Module (LDCM) when switch is pressed to LOCK position.
If the LDCM detects low voltage (short to ground) on switch lock input circuit for 20 seconds or more, DTC B2236 will set. DTC will only be set as history even if condition is current. No driver warning message will be displayed.
DTC will clear when condition no longer exists. Driver's Information Center (DIC) or scan tool can be used to manually clear DTC.
NO RELATED
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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.