Navigation display does not open or opens part way

NOTE: Check the vehicle battery condition first (see 12 VOLT BATTERY TEST ).

Press the OPEN/CLOSE button.
Does the unit beep?

YES -Go to step 2.

NO -Replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).
Press the OPEN/CLOSE button.
Does the display open normally?

YES -The system is OK at this time.

NO -Replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).