Scan Tool Data Definitions

WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Accessory Switch: Input from ignition switch ACCESSORY circuit. Used to determine power mode. Hot in ACCESSORY and RUN.
Base Model Part Number: Part number of the BCM.
Battery Voltage: This is the direct reading off the vehicle system voltage.
End Model Part Number: Last 4 digits of the BCM part number.
Ignition Run Start Relay: The scan tool displays the state of the control circuit of the ignition run start relay.
Ignition Run Start Switch: Input to the control module from the ignition switch indicating the state of the RUN signal.
Key in Ignition: Input from ignition switch indicating that the ignition key is inserted into the ignition switch. HOT with key in ignition and ignition switch position LOCK.
Last Four Digits Of The SDM: This is the last 4 digits of the vehicles programed Sensing and Diagnostic Module.
LF Door Ajar Switch: The scan tool displays the switch data of the left front door.
Left Rear Door Ajar Sw.: The scan tool displays the switch data from the left rear door.
Ignition Power Relay: This an output to the control circuit of the ignition relay. It is active when the ignition switch is in the RUN position.
RAP Relay: The scan tool displays the state of the RAP relay control circuit.
RF Door Ajar Switch: The scan tool displays the switch data of the right front door.
Right Rear Door Ajar Sw.: The scan tool displays the switch data of the right rear door.
Software Release, Day: This is the day of the month that the software was released.
Software Release, Month: This is the month of the year that the software was released.
Software Revision: This is the revision of the installed software of the BCM.
Software Release, Year: This is the year that the installed software was released.
VIN Number: This is the vehicle number that the BCM is programed to operate with.
Starter Switch: This is an input to the BCM that is OFF when the vehicle operator does not have the ignition switch in the start position. When the ignition switch is in the start position the display will read ON.