Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Scan Tool Data Definitions
- Auto. Learn Counter
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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
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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
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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
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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
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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
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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
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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
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The scan tool displays 1-10. The scan tool displays the number of transponder values learned by the VTD system.
- Passkey Power Mode
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The scan tool displays On/Off. The scan tool displays ON when the BCM is commanding the theft deterrent exciter ON.
- Right Rear Door Ajar Switch
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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
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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
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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
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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
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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
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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 vehicle theft deterrent (VTD) state.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.