If NAVI control unit detects that inserted DVD-ROM map malfunctioning or if it is impossible to load data from DVD-ROM map

WARNING: This page is about a different car, the 2003 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.

CHECK1: DVD-ROM
1. Remove inserted DVD-ROM map to check that it is identified.
OK or NG
1. OK : GO TO 2.
2. NG : Replace identified DVD-ROM map.
CHECK2: DVD-ROM
1. Check removed DVD-ROM that there are dirt, scratch and warp.
OK or NG
1. OK : GO TO 3.
2. NG : Replace DVD-ROM map.
CHECK3: DVD-ROM
1. Insert same DVD-ROM to make sure same diagnosis result is found as last self-diagnosis.
OK or NG
1. OK : Replace NAVI control unit.
2. NG : Replace DVD-ROM map.