Scan Tool Data Definitions

WARNING: This page is about a different car, the 2004 Chevrolet Monte Carlo and 2004 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.

Lockout Timer Status: The duration of time the system remains in tamper mode The VTD system will disable sampling of the key code for 10 minutes when a tamper is detected.
Auto-Learn Timer Status: The duration of time the system remains in the re-learn wait mode.
Seed & Key Timer Status: The scan tool displays the time in seconds used by the BCM to learn a valid code from the passlock sensor. The learn procedure consists of 3 seperate periods.
Passlock Data Voltage: Displays the voltage data from the Passlock Sensor to the BCM. The BCM determines if the data received is valid or invalid.
Security Lamp State: Indicates the state of the SECURITY indicator either on, off or flashing.
His DTC Cyc. Counts.: Displays the number of key cycles that have occured in order to clear history DTCs.
PCM/VCM in VTD Fail Enable: The scan tool displays which state the Powertrain Control Module (PCM) is currently in for the Vehicle Theft Deterrent (VTD).
VTD Fuel Disable: The scan tool displays the state of which the fuel delivery system is in.
VTD Auto Learn Timer: The scan tool displays which state the learn timer for the VTD is currently in.
VTD Fuel Disable Until Ign. OFF: The scan tool display the state of which the fuel delivery system is in according to the ignition switch position.