Scan Tool Data Definitions

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Auto Learn Timer: The scan tool displays the seconds used by the BCM to learn valid code from the Passlock™ sensor. The learn procedure consists of 3 consecutive periods.

Battery Voltage: The scan tool displays the battery system voltage.

Door Ajar Switch: The scan tool displays Off when the applicable door is fully closed or On when the door is open or ajar.

Left Rear Door Ajar Switch: The scan tool displays Off when the left rear door is fully closed or On when the left rear door is open or ajar.

Liftgate Ajar Switch: The scan tool displays Closed when the liftgate is fully closed or Ajar when the liftgate is open or ajar.

Liftglass Ajar Switch: The scan tool displays Closed when the liftglass is fully closed or Ajar when the liftglass is open or ajar.

Passlock™ Code: The scan tool displays the validity of the Passlock™ code received by the BCM. The scan tool displays OPEN, SHORTED, TAMPER and a valid code as a numeric value (1-10).

Passlock™ Data Voltage: The scan tool displays the voltage code from the Passlock™ sensor to the BCM. The BCM determines if the voltage received is a valid or invalid code voltage.

Passlock Ignition Cycles: The scan tool displays the number of times the ignition has been cycled from Off to the Start position.

Passlock Power: The scan tool displays the state of the power to the passlock sensor by On or Off.

Passlock™ State: The scan tool displays the state of the Passlock™ system.

Right Rear Door Ajar Switch: The scan tool displays Off when the right rear door is fully closed or On when the right rear door is open or ajar.

Seed and Key Timer: The scan tool displays 0-2550 seconds, The scan tool displays the current state of the Seed and Key Timer, which must time out in order for the relearn procedure to be complete.

Tamper Timer: The scan tool displays the time remaining when in the tamper mode. The timer starts when the ignition switch is turned to the RUN position and the BCM receives a Passlock™ data voltage different from the last learned voltage. The timer has a delay of 10 minutes and will stay active even if the ignition switch is cycled from the RUN to the OFF position.

VCM/PCM in Fail Enable: The scan tool displays the state of the VCM/PCM fail enable mode. The scan tool displays YES when the Passlock™ system transitions from the Monitor Passlock™ Data state to the VCM/PCM Fail Enable state.

VTD Auto. Learn Timer: The scan tool displays Active/Inactive. The scan tool displays the current state of the Auto. Learn Timer, which must time out three times in order for the relearn procedure to be complete.

VTD Fuel Disable: The scan tool displays the state of the VTD fuel disable mode. The scan tool displays INACTIVE when the Passlock™ system verifies a valid password.

VTD Fuel Disable Until Ignition Off: The scan tool displays the state of the VTD fuel disable until Ignition off mode. The scan tool displays NO when the Passlock™ system verifies a valid password.

VTD Password: The scan tool displays OK/Incorrect. The scan tool displays OK when the PCM has received a learned fuel continue password from the VTD system. The scan tool displays Incorrect when the PCM has received a unlearned fuel continue password from the VTD system.