Scan Tool Data Definitions

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

Battery Voltage: The scan tool displays the value of the battery voltage.

Ignition 1: The scan tool displays Active when the ignition switch is in the RUN or CRANK position.

Ignition 3: 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 word Unknown is displayed when the BCM can not determine the position of the ignition switch.

Key In Ignition: The scan tool displays Yes when the ignition key is fully inserted into the ignition switch cylinder. The BCM uses this data to control the chime feature.

Module Part Number: The scan tool displays the part number assigned to the BCM that is currently in the vehicle.

Software Design Suffix: The scan tool displays the version of the software part number in the BCM.

Software Part Number: The scan tool displays the software identification number in the BCM.

Fig 1: Diagnostic Trouble Code (DTC) List

Courtesy of GENERAL MOTORS CORP.