GM Service Manual Online
For 1990-2009 cars only

Theft Deterrent Scan Tool Data Parameters

Parameter

Operating Conditions

Expected Value

Definition

Ignition is ON, engine OFF, and vehicle is stationary

Auto Learn Counter

--

0 counts

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

Auto Learn Timer

--

0:00 mins

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

Fleet Vehicle

--

Yes

The scan tool will display whether the vehicle is a fleet car.

--

No

Learn Coded Key

--

Yes

The scan tool will display whether the module has learned the code of the key in use.

--

No

Ignition Voltage Signal

--

Present

The scan tool displays Present or Not Present. Present is displayed if there is an ignition voltage signal to the TDM.

Not Present

Immobilisation

Immobilisation activated

Active

The scan tool displays Active or Inactive to indicate the status of the immobilisation.

Immobilisation deactivated

Inactive

Immobilizer Programmed

--

Yes

The scan tool will display if the immobilizer is programmed or not.

--

No

Master Keys Learned

--

2 counts

The scan tool will display the total number of keys programmed as master keys to the vehicle.

PCM Auto Learn Timer

--

Active

The scan tool displays Active or Inactive. This is the current state of the ECM auto learn timer.

--

Inactive

PCM Password Learned

--

Enabled

The scan tool displayed whether the fuel enabled password is enabled or disabled to the ECM

--

Disabled

Power Mode

Ignition is in OFF position

Off

This parameter displays Off/Accessory/Run/Crank. This is the status of the system power mode dependent on the ignition position.

Ignition is in ACC position

Accessory

Ignition is in RUN position

Run

Ignition is in CRANK position

Crank

Powertrain DTC

--

Yes

The scan tool displays Yes or No. Yes is displayed if there is a powertrain DTC stored in the ECM or TCM.

--

No

Previous TDM State

--

Learn Keys Standby

This was the last state of the TDM.

--

Wake up

--

Monitor Key

Security Code Programmed

--

Yes

The scan tool displays Yes or No. Yes is displayed if a security code is programmed.

--

No

Start Disabled

--

Yes

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

--

No

Tamper Status

--

Active

The scan tool displays whether theft is in the tamper state.

Theft Deterrent Module (TDM) State

--

Learn Keys Standby

This was the last state of the TDM.

--

Wake up

--

Monitor Key

Telltale Status

--

On

This is the state of the security indicator.

--

Off

Theft Problem

--

Yes

The scan tool displays Yes or No. Yes is displayed if there is a theft problem.

--

No

Total Keys Learned

--

2 counts

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

Transponder Key

--

Present

The scan tool displays Present or Not Present. Present is displayed when a transponder is present. This does not mean that this is a valid or learned transponder, but only that a transponder is present.

--

Not Present

Valid Key

--

Yes

The scan tool displays Yes if a valid transponder key is present.

No