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.
Scan Tool Data Definitions
Software Part Number: Part number of component program or the ECU. Used to determine applicability to vehicle RPO content.
Accessory Switch: Input from ignition switch Accessory circuit. Used to determine power mode. Hot in ACCESSORY and RUN.
Driver Door Open Sw.: Input from the driver door indicating door status (Open-Closed).
Door Ajar Switches: Input showing state of the passenger door(s).
Doors Battery Fd: Indicates completion of the power circuit for the door control functions.
Doors System Gnd: Indicates the completion state of the ground circuit for the door functions.
Electronics Battery Fd: Data indicates the voltage detected by the control module on the power circuit for the module internal devices.
Electronics Battery Fd: Input indicates the completion state of the power circuit for the module internal devices.
Electronics System Gnd: Indicates the completion state of the ground circuit for the module internal devices.
Ignition 0: Input to the control module from the ignition switch indicating the Ignition 0 position. Switch closed (HOT) in ignition switch positions Unlock, Accessory, Run, Crank.
Ignition 1: Input to the control module from the ignition switch indicating the Ignition 1 position. Switch closed (HOT) in ignition switch positions Run, Crank.
Inadvertent Power Output: Input indicating the sensed state of the inadvertent power request circuit.
Inadvertent Power Relay: Output indicating the state as commanded by the control module.
Lamp Request: Input telling the control module to initiate inadvertent power management.
Load Management Status: Output indicating the power mode commanded.
Loads Battery Fd: Indicates the completion state of the supply circuit for the high current loads.
Loads System Gnd: Indicates completion state of the ground circuit for the high current loads.
Pass Door Jamb Sw.: Input showing the state of the front passenger door.
RAP Relay: Output indicates state that the control module has commanded.
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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.