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

--

Disabled

The scan tool displays Enabled or Disabled. This is the state of the automatic learn.

Auto Learn Counter

--

Varies

This displays Counts.

Auto. Learn Timer

--

Varies

This displays min.

Battery Voltage

--

Varies

This displays Volts. This is the current battery voltage.

Ignition Voltage

--

Varies

This displays Volts. This is the current ignition voltage.

Learned Keys Required

--

Varies

The scan tool displays 1 or 2. This is the required number of learned keys.

Master Keys Learned

--

Varies

This displays Counts.

PCM Auto. Learn Timer

--

Inactive

The scan tool displays Active or Inactive. This is the state of the automatic learn timer.

PCM Fail Enable

--

Inactive

The scan tool displays Active or Inactive. This is the state of the fail enable.

PCM Fuel Continue

--

Inactive

The scan tool displays Active or Inactive. This is the state of the fuel continue.

PCM Password Learning

--

Inactive

The scan tool displays Active or Inactive. This is the state of the password learning.

PCM Password Status

--

Valid

The scan tool displays Tamper, Undecided, Valid or No Info.

Power Mode

--

Run

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

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.

Tamper Status

--

Inactive

The scan tool displays Active or Inactive.

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.

Telltale Status

--

Off

The scan tool displays On, Off, Flash or Invalid.

Total Keys Learned

--

Varies

This displays Counts.

Transponder Key

--

Present

The scan tool displays Present or Not Present.

Valid Key

--

Yes

The scan tool displays Yes or No.