GM Service Manual Online
For 1990-2009 cars only

Theft Deterrent Module Scan Tool Data Parameters

Parameter

Expected Value

Definition

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 Reconnect

No

The scan tool displays Yes or No. Yes is displayed if the battery was recently reconnected.

Fleet Vehicle

No

The scan tool displays Yes or No. Yes is displayed if the vehicle is a fleet vehicle.

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.

Fuel Disable Timeout

No

The scan tool displays Yes or No. Yes is displayed if the fuel disable timed out.

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.

Immobilization

Inactive

The scan tool displays Active or Inactive. This is the state of the immobilizer system.

Immobilizer Programmed

Yes

The scan tool displays Yes or No. This is the state of the immobilizer system programming.

Incorrect VIN 1

No Error

The scan tool displays Unknown, No Error, ECM/PCM, TCM, EBCM, DSCC, TBCM, ESCM, ASCM, BCM, BCM Aux., SDM, PPS, ROS, PIDM, IPC, DIC, HUD, Chime, Radio, Amp., CDX, RSA, DRR, Onstar, HVAC, RCC, DDM, PDM, LRDM, RRDM, LGM, PSDM, MSM, HVSM, RCDLR, SOD, TDM or SCLM. The module displayed has an incorrect VIN programmed into that module.

Incorrect VIN 2

No Error

The scan tool displays Unknown, No Error, ECM/PCM, TCM, EBCM, DSCC, TBCM, ESCM, ASCM, BCM, BCM Aux., SDM, PPS, ROS, PIDM, IPC, DIC, HUD, Chime, Radio, Amp., CDX, RSA, DRR, Onstar, HVAC, RCC, DDM, PDM, LRDM, RRDM, LGM, PSDM, MSM, HVSM, RCDLR, SOD, TDM or SCLM. The module displayed has an incorrect VIN programmed into that module.

Incorrect VIN 3

No Error

The scan tool displays Unknown, No Error, ECM/PCM, TCM, EBCM, DSCC, TBCM, ESCM, ASCM, BCM, BCM Aux., SDM, PPS, ROS, PIDM, IPC, DIC, HUD, Chime, Radio, Amp., CDX, RSA, DRR, Onstar, HVAC, RCC, DDM, PDM, LRDM, RRDM, LGM, PSDM, MSM, HVSM, RCDLR, SOD, TDM or SCLM. The module displayed has an incorrect VIN programmed into that module.

Incorrect VIN 4

No Error

The scan tool displays Unknown, No Error, ECM/PCM, TCM, EBCM, DSCC, TBCM, ESCM, ASCM, BCM, BCM Aux., SDM, PPS, ROS, PIDM, IPC, DIC, HUD, Chime, Radio, Amp., CDX, RSA, DRR, Onstar, HVAC, RCC, DDM, PDM, LRDM, RRDM, LGM, PSDM, MSM, HVSM, RCDLR, SOD, TDM or SCLM. The module displayed has an incorrect VIN programmed into that module.

Incorrect VIN 5

No Error

The scan tool displays Unknown, No Error, ECM/PCM, TCM, EBCM, DSCC, TBCM, ESCM, ASCM, BCM, BCM Aux., SDM, PPS, ROS, PIDM, IPC, DIC, HUD, Chime, Radio, Amp., CDX, RSA, DRR, Onstar, HVAC, RCC, DDM, PDM, LRDM, RRDM, LGM, PSDM, MSM, HVSM, RCDLR, SOD, TDM or SCLM. The module displayed has an incorrect VIN programmed into that module.

Incorrect VIN 6

No Error

The scan tool displays Unknown, No Error, ECM/PCM, TCM, EBCM, DSCC, TBCM, ESCM, ASCM, BCM, BCM Aux., SDM, PPS, ROS, PIDM, IPC, DIC, HUD, Chime, Radio, Amp., CDX, RSA, DRR, Onstar, HVAC, RCC, DDM, PDM, LRDM, RRDM, LGM, PSDM, MSM, HVSM, RCDLR, SOD, TDM or SCLM. The module displayed has an incorrect VIN programmed into that module.

Incorrect VIN 7

No Error

The scan tool displays Unknown, No Error, ECM/PCM, TCM, EBCM, DSCC, TBCM, ESCM, ASCM, BCM, BCM Aux., SDM, PPS, ROS, PIDM, IPC, DIC, HUD, Chime, Radio, Amp., CDX, RSA, DRR, Onstar, HVAC, RCC, DDM, PDM, LRDM, RRDM, LGM, PSDM, MSM, HVSM, RCDLR, SOD, TDM or SCLM. The module displayed has an incorrect VIN programmed into that module.

Incorrect VIN 8

No Error

The scan tool displays Unknown, No Error, ECM/PCM, TCM, EBCM, DSCC, TBCM, ESCM, ASCM, BCM, BCM Aux., SDM, PPS, ROS, PIDM, IPC, DIC, HUD, Chime, Radio, Amp., CDX, RSA, DRR, Onstar, HVAC, RCC, DDM, PDM, LRDM, RRDM, LGM, PSDM, MSM, HVSM, RCDLR, SOD, TDM or SCLM. The module displayed has an incorrect VIN programmed into that module.

Incorrect VIN 9

No Error

The scan tool displays Unknown, No Error, ECM/PCM, TCM, EBCM, DSCC, TBCM, ESCM, ASCM, BCM, BCM Aux., SDM, PPS, ROS, PIDM, IPC, DIC, HUD, Chime, Radio, Amp., CDX, RSA, DRR, Onstar, HVAC, RCC, DDM, PDM, LRDM, RRDM, LGM, PSDM, MSM, HVSM, RCDLR, SOD, TDM or SCLM. The module displayed has an incorrect VIN programmed into that module.

Incorrect VIN 10

No Error

The scan tool displays Unknown, No Error, ECM/PCM, TCM, EBCM, DSCC, TBCM, ESCM, ASCM, BCM, BCM Aux., SDM, PPS, ROS, PIDM, IPC, DIC, HUD, Chime, Radio, Amp., CDX, RSA, DRR, Onstar, HVAC, RCC, DDM, PDM, LRDM, RRDM, LGM, PSDM, MSM, HVSM, RCDLR, SOD, TDM or SCLM. The module displayed has an incorrect VIN programmed into that module.

Learn Coded Key

No

The scan tool displays Yes or No.

Master Keys Learned

Varies

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

PCM Authentication Status

Valid

The scan tool displays Unknown, Incorrect, Negative or Valid. This is the state of the PCM authentication.

PCM Auto. Learn Timer

Inactive

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

PCM Password Learning

Enabled

The scan tool displays Enabled or Disabled. This is the state of the password learning in the ECM.

PCM Release Status

Release

The scan tool displays Unknown, Post Release, Pre-Release or Release. This is the release status of the ECM.

Power Mode

Run

The scan tool displays Off, Accessory, Run or Crank Request. This is the state of the ignition switch.

Powertrain DTC

No

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

Previous TDM State

Varies

The scan tool displays Asleep, Wakeup, Normal, Learn Passkey, Tamper, Monitor Key, Fail Pending, Fail Enabled, Lrn Keys Stdby, Learn More Keys, Learn Pending, Auto Learn, Auto. Lrn. Done, No Coded Key, Check Second Key, VIN Check or VIN Timer. This was the last state of the TDM.

Security Code Programmed

No

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

Start Disabled

No

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

Substitution Detection Status

Pass

The scan tool displays Pass or Fail. Pass is displayed if the TDM does not sense a module with incorrect VIN programming.

Tamper Status

Inactive

The scan tool displays Active or Inactive. This is the state of the tamper system.

TDM State

Varies

The scan tool displays Asleep, Wakeup, Normal, Learn Passkey, Tamper, Monitor Key, Fail Pending, Fail Enabled, Lrn Keys Stdby, Learn More Keys, Learn Pending, Auto Learn, Auto. Lrn. Done, No Coded Key, Check Second Key, VIN Check or VIN Timer. This was the last state of the TDM.

Telltale Status

Off

The scan tool displays On, Off, Flash or Invalid. This is the state of the security indicator.

Theft Problem

No

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

Total Keys Learned

Varies

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.

Valid Key

Yes

The scan tool displays Yes or No. Yes is displayed if a valid key was used as monitored by the TDM.

Valid VIN

Yes

The scan tool displays Yes or No. Yes is displayed if the VIN is valid.

VIN Learned

Yes

The scan tool displays Yes or No. Yes is displayed if the VIN was learned.

VIN Message Received

Yes

The scan tool displays Yes or No. Yes is displayed if the VIN message is received