Toyota Sequoia (2005). Manual - part 610

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DIAGNOSTICS

NAVIGATION SYSTEM

DI–2235

2429

3

Check using another CD.

CHECK:
Check if the problem recurs using another CD.
OK:

The problem does not recur.

OK

Replace CD.

NG

4

Check radio and navigation assy.

CHECK:
Check that the radio and navigation assy is properly installed.
OK:

Radio and navigation assy is properly installed.

NG

Reinstall radio and navigation assy properly.

OK

Proceed to next circuit inspection shown in problem symptoms table (See page 

DI–2184

).

I28259

DI–2236

–

DIAGNOSTICS

NAVIGATION SYSTEM

2430

Poor sound quality in all modes (Low volume)

INSPECTION PROCEDURE

1

Check audio settings.

PREPARATION:
Enter the sound adjustment screen by pressing the ”SOUND”
switch on the AUDIO display.
CHECK:
Set ”BASS” and ”TREB” to the initial values and check if sound
is normal.
OK:

Returns to normal.

HINT:
Sound quality adjustment items vary depending on the type of
the amplifier.

OK

End.

NG

Proceed to next circuit inspection shown in problem symptoms table (See page 

DI–2184

).

DIDCR–01

I28258

I28883

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DIAGNOSTICS

NAVIGATION SYSTEM

DI–2237

2431

Map disc cannot be inserted

INSPECTION PROCEDURE

1

Check map disc.

CHECK:
Check that the map disc is not deformed or cracked.
OK:

No deformations or cracks appear on the map disc.

NG

Check map disc.

OK

2

Check radio and navigation assy.

CHECK:
Check if the ”MAP” indicator near the disc slot is on.
OK:

It is not on.

NG

Press eject switch to eject disc.

OK

Proceed to next circuit inspection shown in problem symptoms table (See page 

DI–2184

).

DIDCT–01

I28883

I28258

DI–2238

–

DIAGNOSTICS

NAVIGATION SYSTEM

2432

Map disc cannot be ejected

INSPECTION PROCEDURE

1

Check radio and navigation assy.

PREPARATION:
Turn the ignition switch to the ACC position.
CHECK:
 Keep pressing the ”MAP” eject switch for 5 seconds and check
if the disc is ejected by forced ejection.
OK:

The disc is ejected.

HINT:
The above operation can only be performed with the ignition
switch in the ACC position.

NG

Proceed to next circuit inspection shown in
problem symptoms table (See page 

DI–2184

).

OK

2

Check map disc.

CHECK:
Check that the map disc is not deformed or cracked.
OK:

No deformations or cracks appear on the map disc.

NG

Replace map disc.

OK

Normal operation.

DIDCU–01