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 security system power circuit supplies power on White wire between BCM and Passlock™ cylinder sensor. DTC will set when ignition is off and BCM detects voltage after ignition is off. Once DTC is set, vehicle will start and stall. SECURITY indicator light will remain illuminated. DTC will clear if BCM goes to sleep and reinitializes with fault cleared, all BCM history DTCs are cleared after 100 ignition cycles with no current DTCs active or by using scan tool.
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.
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