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.
Input 1
Door Handle Switch: The scan tool displays the position of the door handle. The scan tool displays ACTIVE when a door handle is raised and INACTIVE with all doors closed and the door handles at rest.
Drivers Door Jamb Switch: The scan tool displays the position of the drivers door. The scan tool displays ACTIVE when the drivers door is open.
Ignition 1: The scan tool displays the position of the ignition switch. The scan tool displays ACTIVE when the ignition switch is in the RUN or CRANK position.
Ignition 3: The scan tool displays the position of the ignition switch. The scan tool displays ACTIVE when the ignition switch is in the RUN position only.
Ignition Power Mode: The scan tool displays the position of the ignition switch. The scan tool displays Off, Run, Crank and Unknown. The Unknown display is when the BCM can not determine the position of the ignition switch, for example, between the OFF and RUN positions.
Key in Ignition: The scan tool displays Yes if the ignition key has been inserted into the ignition switch lock cylinder. No will be displayed if the key has been removed.
Last Remote Function Actuation (RFA) Cmd. Since Wake-Up: The scan tool displays the last RFA commanded message from the BCM. The scan tool displays None when the BCM awakens from asleep status without receiving a RFA module request from a programmed key fob. The scan tool displays Lock, Unlock, or Panic when the BCM is awake and a command is activated from the key fob to the RFA module.
Lift Glass Switch: The scan tool displays On when the liftglass release switch is pressed. It will display Off when the switch is released.
Park Brake Switch: The scan tool displays the position of the park brake pedal. The scan tool displays Set when the park brake is depressed and the park brake switch is closed. The BCM uses this data in controlling the operation of the park brake indicator, the reminder chime feature and the headlamp/DRL system.
Rear Gate/Door: The scan tool displays Open if the liftglass or liftgate is open or ajar. Closed will be displayed when the glass and gate are completely closed.
Rear Pass Door/Lift Glass: The scan tool displays Active if the passenger door or a rear door is open or ajar. Inactive will be displayed when the doors are completely closed.
Remote Function Actuation (RFA) Message Since Wake-Up: The scan tool displays the last message sent to the BCM from the remote control door lock receiver.
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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.