• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
The theft deterent module compares its stored VIN value to the VIN message sent out by the IPC, if the values do not match this DTC sets.
The ignition is in accessory or run.
• | The VIN check flag of the TDM is true. |
• | The TDM has determined that the battery has been reconnected after a battery disconnect. |
• | The vehicle will not start. |
• | The TDM sends a message to the IPC to illuminate the SECURITY indicator. |
The TDM clears the current DTC when the correct VIN information is present.
Immobilizer Description and Operation
Control Module References for scan tool information
⇒ | If any modules stored VIN does not match the actual VIN, perform the setup procedure for that module. If the stored VIN does not match after setup, replace the module. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for IPC or TDM replacement, setup, and programming.