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.
Asleep & Awake Functions
Wake-up signals turn Body Control Module (BCM) on to begin controlling and/or monitoring certain functions. On 2001 models, BCM wake-up inputs include door ajar switches, ignition switch actuation, inadvertent power feedback, driver door lock and trunk release actuation. On 2002 models, BCM wake-up inputs are the same as 2001 models and also include headlamp actuation, key-in-ignition, parklamp actuation, and detection of battery disconnect and reconnect.
The BCM will sleep if there are no delay timers activated, no output commands, no serial 2 data activity, or ignition switch is in OFF position.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra 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.