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.
Body Control Module Systems Supported
The BCM receives information over the CCD Bus from the PCM in order to support certain features. The required information is a follows:
- Engine RPM
- Injector on Time and Distance Pulses
- Vehicle Speed
- Engine and Battery Temperature
- Charging System Failure, Engine Temperature Limp-In, VTSS Arming Status
- Engine Model
- "Service Engine Soon" Lamp Status
The BCM provides the PCM with information on the A/C switch status and the "OK to Start" or VTSS status.
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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