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Home >> Chevrolet >> 2007 >> Uplander Base, 3.9 1 >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Immobilizer System >> Diagnostic Information and Procedures >> Scan Tool Data Definitions
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Scan Tool Data Definitions

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 vehicle theft deterrent (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.

Left Rear Door Ajar Switch

The scan tool displays the position of the left rear door. The scan tool will display Ajar when to door is open.

LF Door Ajar Switch

The scan tool displays the position of the left front door. The scan tool will display Ajar when to door is open.

LF Key Cylinder Lock Switch

The scan tool displays the status of the LF door key switch. The scan too will display Idle/Lock/Unlock/Invalid depending on the position of the LF key cylinder.

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 body control module (BCM) is commanding the theft deterrent exciter ON.

Right Rear Door Ajar Switch

The scan tool displays the position of the right rear door. The scan tool will display Ajar when to door is open.

RF Door Ajar Switch

The scan tool displays the position of the right front door. The scan tool will display Ajar when to door is open.

RF Key Cylinder Lock Switch

The scan tool displays the status of the RF door key switch. The scan too will display Idle/Lock/Unlock/Invalid depending on the position of the RF key cylinder.

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.

Vehicle Security Status

The scan tool displays Fuel Enabled/Fuel Disabled/Fuel Off for Ign/Learn Timer On/Fail Enable. The scan tool displays the current state of the VTD state.