Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

When learning a coded key, the theft deterrent module (TDM) is placed in learn mode. DTC B3031 will set automatically as an indicator that the system is in learn mode and not as a fault indicator. Once the coded key is learned, learn mode will be exited and the DTC cleared. If the TDM does not exit learn mode, B3031 will remain current and indicate a fault.

The vehicle theft deterrent system is in learn mode.

DTC B3031 will set any time the TDM enters learn mode

The security indicator will illuminate.

Schematic Reference

Theft Deterrent System Schematics

Connector End View Reference

Theft Deterrent System Connector End Views

Description and Operation

Vehicle Theft Deterrent (VTD) Description and Operation

Electrical Information Reference

Scan Tool Reference

Important: When performing a 10 Minute or 30 Minute Relearn Procedure, all keys not learned at that time will be erased and not be recognized. Perform the Adding Keys procedure on all keys or instruct the customer how to perform the Adding Keys procedure should all keys not be present at the time of repair. Refer to Adding Keys .

1. Verify DTC B3060 is not set as current.

⇒	If DTC B3060 is set as current, refer to DTC B3060 .

2. With a scan tool, verify the Learn Coded Key parameter displays Yes.

⇒	If the VTD Password Learn Enable parameter does not display Yes, perform the 10 Minute Relearn Procedure for the learning replacement keys. Refer to Programming Theft Deterrent System Components .

3. Perform the 10-Minute Relearn Procedure for the VTD system. Refer to Programming Theft Deterrent System Components . The TDM should exit learn mode and DTC B3031 should clear.

⇒	If the TDM does not exit learn mode after the programming attempt, replace the TDM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for TDM replacement, setup and programming.