Scan Tool Data Definitions

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

Auto. Learn Counter: The scan tool displays 0-3. The scan tool displays the current state of the Auto. Learn Timer Counter. The Auto. Learn Counter must increment a total of three times in order for the relearn procedure to be complete.
Auto. Learn Timer: The scan tool displays 0-10 Minutes. The scan tool displays the current state of the Auto. Learn Timer which increments in 10 second intervals. The Auto. Learn Timer must time out 3 times in order for the relearn procedure to be complete.
Fail Enable Counter: The scan tool displays 0-255. The scan tool displays the number of ignition cycles the VTD system has been in the fail enable state.
First Key Flag: The scan tool displays On/Off. The scan tool displays On when the VTD system is ready to learn the first key transponder value.
No. of Learned Key Codes: The scan tool displays 1-10. The scan tool displays the number of transponder values learned by the VTD system.
Passkey Power Mode: The scan tool displays On/Off. The scan tool displays ON when the BCM is commanding the theft deterrent exciter ON.
PCM/VCM in VTD Fail Enable: The scan tool displays Yes/No. The scan tool displays Yes when the PCM is in fail enable. This indicates a failure occurred in the VTD system.
Tamper Flag: The scan tool displays On/Off. The scan tool displays On when the VTD system has read a key transponder value that has not been previously learned.
VTD Auto. Learn Timer: The scan tool displays Active/Inactive. The scan tool displays the current state of the VTD Auto. Learn Timer, which must time out three times in order for the relearn procedure to be complete.
VTD Fail Enable: The scan tool displays On/Off. The scan tool displays On when the VTD system has been configured with VTD fail enable.
VTD Fuel Disable: The scan tool displays Yes/No. The scan tool displays Yes when the PCM has received a fuel disable message from the VTD system.
VTD Fuel Disable Until Ign. Off: The scan tool displays Yes/No. The scan tool displays Yes when the PCM has received the fuel disable message from the VTD system. This indicates the PCM will not allow fuel delivery until the ignition is switched off prior to another start attempt.
VTD States: The scan tool displays Standby/Learn First Key/Read Key Code/Valid Key Code/Learn Pending/Learn More Keys/No Coded Key/Invalid Key Code/Relearn Wait/Relearn Off/Read Code Fail Enable/Fail Pending. The scan tool displays the current state of the vehicle theft deterrent (VTD) state.