Provided enough space exists in the [Data] file system of AutoCal V2;

1. Trace files are automatically saved where an error message is presented using the device in BBX mode.  
2. Users can manually save trace files where options do not perform the desired outcome.

To manually generate a trace file on AutoCal V2 navigate to:

1. AutoCal (standard menu): Save Trace File
2. AutoCal (advanced menu): Scan Tool -> Save Trace File

AutoCal V2 maintains an internal buffer of the most recent messages sent to and received from the vehicle. That buffer is stored in RAM memory and is wiped clean each time the device is powered off or rebooted. Therefore you MUST save the trace file before powering off or rebooting the device.

The trace file will be saved in the Scan folder on the device.  It will be named USR_xxxx.efx, where xxxx is the unique file counter number.

The trace file can be retrieved by connecting AutoCal V2 to your PC and using EFILive Explorer.