GM Service Manual Online
For 1990-2009 cars only

Theft Deterrent Module Scan Tool Data Parameters

Parameter

System State

Expected Value

Description

Operating Conditions: Ignition ON

Auto Learn Counter

--

Varies

This displays Counts. This is the number of times the auto learn procedure was carried out by the TDM.

Auto. Learn Timer

--

Varies

This displays minutes. This is the amount of minutes the TDM took to auto learn.

Battery Voltage

--

Varies

The scan tool displays Volts

Dash Mode

--

Off

The scan tool displays On or Off.

Export Mode

--

Off

The scan tool displays On or Off. The scan tool displays On if the TDM is configured as an export TDM.

First Key Flag

--

Off

The scan tool displays On or Off.

Fuel Continue

--

No

The scan tool displays Yes or No.

Fuel Disable Ignition Off

--

Yes

The scan tool displays Yes or No. Yes is displayed if the fuel is disabled during ignition OFF.

Ignition Counter

--

Varies

The scan tool displays the number of ignition cycles.

Ignition Voltage

--

Varies

The scan tool displays Volts.

Manufacturers Enable Counter

--

Varies

The scan tool displays the current ignition cycle status of the MEC.

Master Keys Learned

--

Varies

This displays Counts. This is the number of master keys learned by the TDM.

Report Password

--

Off

The scan tool displays On or Off.

Start Disabled

--

No

The scan tool displays Yes or No. Yes is displayed if the starter is disabled.

Tamper Flag

--

Off

The scan tool displays On or Off. The scan tool will display On when tampering of the TDM is detected.

Two Good Keys Flag

--

Off

The scan tool displays On or Off. The scan tool displays On when two valid master keys are required to perform the Adding Keys procedure.

Valet Flag

--

Off

The scan tool displays On or Off. The scan tool displays On when valet mode is enabled.

VTD Fail Enable

--

Off

The scan tool displays On or Off. The scan too displays Yes when the TDM has detected a fault after a valid password has been received.

VTD States

--

Varies

The scan tool displays Ignition Off, Normal Decision, Learn First Key, Tamper, Monitor Key, Fail Enable, Fail Pending, Learn More Keys, Seedkey Lrn Pend, Seedkey Learn, Auto Learn Pend, Auto Learn, Wakeup, No Coded Key, Check Second Key, Auto Learn Done, VIN Check, or VIN Timer.