DTC 1001: FROM System Info Error

NOTE:

Check the vehicle battery condition first (see 12 VOLT BATTERY TEST ).
This navigation DTC sets when there is an internal problem with the Flash-ROM.
Before you troubleshoot, make sure to follow the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Clear the hard error code (see HOW TO CLEAR ERROR HISTORY ).
Turn the ignition switch to LOCK (0) and then back to ON (II).
Check for the hard error code (see HOW TO CHECK ERROR HISTORY ).

Is DTC 1001 indicated?

YES -Replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ), because there is an internal problem with the Flash-ROM.

NO -Intermittent failure, the system is OK at this time. If the unit repeatedly comes back with the DTC, replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).