Toyota Sequoia (2005). Manual — part 606
I28222
–
DIAGNOSTICS
NAVIGATION SYSTEM
DI–2219
2413
Touch panel switch does not function
INSPECTION PROCEDURE
1
Check touch panel.
CHECK:
Check for dirt on the display surface.
OK:
The display surface is clean.
NG
Remove any dirt found and recheck touch pan-
el.
OK
2
Display check mode (Touch switch check).
PREPARATION:
Enter the ”Display Check” mode (Touch Switch Check) (See
page
CHECK:
Touch the display in the area where the abnormal switch oc-
curs.
OK:
A ”+” mark appears at the touched position.
OK
Replace radio and navigation assy.
NG
Proceed to next circuit inspection shown in problem symptoms table (See page
DIDCE–01
I28250
DI–2220
–
DIAGNOSTICS
NAVIGATION SYSTEM
2414
Display panel does not open, tilt, or tilts improperly
INSPECTION PROCEDURE
1
Check radio and navigation assy.
CHECK:
Check for foreign matter or obstructions caught in the moving
parts of the panel.
OK:
No obstruction or foreign matter is found.
NG
Remove any obstruction or foreign matter
found.
OK
2
Operation check.
CHECK:
Check if the navigation and audio systems function properly.
OK:
Navigation and audio systems function properly.
OK
Replace radio and navigation assy.
NG
Proceed to next circuit inspection shown in problem symptoms table (See page
DIDCG–01
I28251
I28252
I28253
–
DIAGNOSTICS
NAVIGATION SYSTEM
DI–2221
2415
Screen flicker or color distortion
INSPECTION PROCEDURE
1
Check display setting.
PREPARATION:
Enter the display adjustment screen by pressing the ”DISPLAY”
switch.
CHECK:
Reset display settings (contrast, brightness) and
check if the screen appears normal.
OK:
Returns to normal.
PREPARATION:
Press the ”INFO” switch and then the ”Screen Setting” switch.
CHECK:
Set the ”Background Color” to ”Green” (initial setting) and check
if it is normal.
OK:
Returns to normal.
OK
End.
NG
DIDCH–01
I28220
DI–2222
–
DIAGNOSTICS
NAVIGATION SYSTEM
2416
2
Check cabin.
CHECK:
Check if the cabin temperature is –20
C (–4.0
F) or less.
OK:
Cabin is warmer than –20
C (–4.0
F).
NG
Heat cabin and recheck temperature.
OK
3
Display check mode (Color bar check mode).
PREPARATION:
Enter the ”Display Check” mode (Color Bar Check Mode) (See
page
CHECK:
Check that color bars match the displayed names.
OK:
Color bars match the displayed names.
NG
Replace radio and navigation assy.
OK
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