For 1990-2009 cars

Parameter | Operating Conditions | Expected Value | Definition
--- | --- | --- | ---
Ignition is ON, engine OFF, and vehicle is stationary
Battery Reconnect | -- | Yes | The scan tool displays Yes or No to indicate a battery reconnect. This is used for substitution detection to determine if a check needs to be made for substituted parts.
-- | No
Engine Start Disable | Engine start disable activated | Yes | The scan tool displays Yes or No to indicate if the engine start disable has been activated or not.
Engine start disable deactivated | No
Ignition Voltage Status | Ignition voltage present | Active | The scan tool displays Active or Inactive to indicate if the ignition voltage is present or not.
Ignition voltage not present | Inactive
Immobilisation | Immobilisation activated | Active | The scan tool displays Active or Inactive to indicate the status of the immobilisation.
Immobilisation deactivated | Inactive
Invalid Transponder Key | Invalid transponder key detected | Yes | The scan tool displays Yes or No to indicate if a invalid transponder key is detected or not.
Valid transponder key detected | No
Substitution Detection | No substitution detected | Passed | The scan tool displays Passed or Failed for the substitution detection system.
Substitution detected | Failed
System 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
Tamper Status | Tamper state activated | Active | The scan tool displays whether the theft module is in the tamper state.
Tamper state deactivated | Inactive
Theft Deterrent DTC | -- | Present | The scan tool displays Present or Not Present to indicate whether a DTC has been logged or not.
-- | Not Present
Theft Deterrent Status | -- | Lrn Keys Stdby | This is dependent on the position of the ignition key.
-- | Wake up
-- | Monitor Key
Theft Deterrent Telltail | Theft deterrent telltail activated | On | The scan tool displays On if the theft deterrent system has been activated.
Theft deterrent telltail deactivated | Off
Transponder Key ID Error | Key ID does not match the theft module | Yes | The scan tool will display Yes if the key ID does not match the theft module.
Key ID does match the theft module | No
Transponder Key Number | -- | 1 | The scan tool displays 1/2/3/4. depending on what key is in the ignition.
-- | 2
-- | 3
-- | 4
Transponder Key Programmed | -- | 1/2/3/4 | The scan tool displays the number of transponder keys programmed.
Valid Transponder Key | Valid transponder key present | Yes | The scan tool displays Yes if a valid transponder key is present.
Invalid transponder key present | No
VIN Message Received | VIN message received | Yes | The scan tool displays Yes or No to indicate whether a VIN message has been received or not.
VIN message not received | No
VIN Received | -- | Yes | The scan tool displays Yes or No to indicate when the VIN has been received or not.
-- | No
VIN Valid | Valid VIN | Yes | The scan tool displays Yes or No to indicate when a VIN is valid or not.
Invalid VIN | No
Wrong Transponder Key | Wrong transponder key used | Yes | The scan tool displays Yes or No to indicate if the wrong transponder key is used or not.
Correct transponder key used | No