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 

DI–2176

).

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 

DI–2184

).

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 

DI–2184

).

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 

DI–2176

).

CHECK:
Check that color bars match the displayed names.
OK:

Color bars match the displayed names.

NG

Replace radio and navigation assy.

OK