TOYOTA SEQUOIA 2001 Service Repair Manual

I28352
± DIAGNOSTICSAUDIO SYSTEM
DI±2029
2223 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check antenna for noise production.
CHECK:
Noise Check with Antenna
(1) With the ignition switch in the ACC position, turn on the radio and choose the AM mode.
(2) Place the tip of a screwdriver on the antenna of the rear glass antenna, and check that noise is
heard from the speakers.
OK:
Noise occurs.
OK Replace radio receiver assy.
NG
4 Inspect radio receiver assy (Antenna).
CHECK:
(a) Preparation for Check
(1) Remove the antenna plug of the radio receiver as-
sembly.
(b) Noise Check
(1) With the radio receiver assy connector connected,
turn the ignition switch to the ACC position.
(2) Turn on the radio and choose the AM mode.
(3) Place a screwdriver or a piece of metal such as thin
wire on an antenna jack of the radio receiver assy
and check that noise is heard from the speaker.
OK:
Noise occurs.
NG Replace radio receiver assy.
OK
Replace antenna cord sub±assy.

DI±2030
± DIAGNOSTICSAUDIO SYSTEM
2224 Author: Date:
2005 SEQUOIA (RM1146U)
CD cannot be inserted or is ejected right after insertion
INSPECTION PROCEDURE
1 Check if a normal CD is inserted.
CHECK:
Check if a normal CD is inserted.
Make sure that the CD is a normal audio CD, and that there is no deformation, flaw, stain, burr or other
defects on the CD.
OK:
Normal audio CD is inserted.
HINT:

Translucent or oddly±shaped CDs cannot be played.

Computer CD±ROMs (even those with music) and CD±R discs cannot be played.

Playing an 8±cm (3.2 in.) CD does not require an adapter.
NG End.
OK
2 Check if a CD is inserted properly.
CHECK:
Check if a CD is inserted properly.
Check whether or not the CD is inserted upside down.
OK:
Not upside down.
NG Set disc correctly.
OK
DIDA5±01

I28353
± DIAGNOSTICSAUDIO SYSTEM
DI±2031
2225 Author: Date:
2005 SEQUOIA (RM1146U)
3 Disc cleaning.
PREPARATION:
Disc cleaning
If the disc gets dirty, clean the disc by wiping the surface
from the center to outside in a radial direction with a soft
cloth.
NOTICE:
Do not use a conventional record cleaner or anti±static pre-
servative.
OK:
Malfunction disappears.
OK End.
NG
4 Replace CD with another and recheck.
PREPARATION:
Replace the CD with another and recheck.
CHECK:
Replace the CD with another normal one to see if the same trouble occurs again.
OK:
Malfunction disappears.
NG Replace radio receiver assy.
OK
End.

DI±2032
± DIAGNOSTICSAUDIO SYSTEM
2226 Author: Date:
2005 SEQUOIA (RM1146U)
CD cannot be ejected
INSPECTION PROCEDURE
1 Press ºEJECTº and check operation.
CHECK:
Press ºEJECTºand check the operation.
Press the CD EJECT switch of the radio receiver assembly for 2 seconds or more to see if the CD is
ejected.
OK:
CD is ejected.
HINT:
If the CD is not ejected, bring the vehicle in for repair.
Do not attempt to remove it by force.
NG Replace radio receiver assy.
OK
2 Replace CD with another and recheck.
CHECK:
Insert another CD and check if it is ejected.
OK:
The disc is ejected.
NG Replace radio receiver assy.
OK
End.
DIDA6±01

± DIAGNOSTICSAUDIO SYSTEM
DI±2033
2227 Author: Date:
2005 SEQUOIA (RM1146U)
Sound quality is bad only when CD is played (Volume is too low)
INSPECTION PROCEDURE
1 Replace CD with another and recheck.
CHECK:
Insert another CD and check if it is ejected.
OK:
Malfunction disappears.
NG Replace radio receiver assy.
OK
End.
DIDA7±01

I28353
DI±2034
± DIAGNOSTICSAUDIO SYSTEM
2228 Author: Date:
2005 SEQUOIA (RM1146U)
CD sound skips
HINT:

The sound may skid when driving on an unpaved road.

Sudden temperature changes in the cabin will cause condensation inside the CD player and prevent
it from playing.
INSPECTION PROCEDURE
1 Disc cleaning.
PREPARATION:
Disc cleaning
If the disc gets dirty, clean the disc by wiping the surface
from the center to outside in a radial direction a with a soft
cloth.
NOTICE:
Do not use a conventional record cleaner or anti±static pre-
servative.
OK:
Malfunction disappears.
OK End.
NG
2 Replace CD with another and recheck.
CHECK:
Replace the CD with another and recheck.
Replace the CD with another normal one to see if the same trouble occurs again.
OK:
Malfunction disappears.
OK End.
NG
DIDA8±01

± DIAGNOSTICSAUDIO SYSTEM
DI±2035
2229 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check of radio receiver assembly installation.
CHECK:
Check that the radio receiver assembly is installed properly.
OK:
Installed properly.
NG Install the radio receiver assembly properly.
OK
4 Did temperature in cabin change rapidly?
CHECK:
Check whether or not rapid temperature change occurred in the cabin.
OK:
A rapid temperature change occurred.
HINT:
A rapid temperature change creates condensation inside the CD player, which may prevent the CD from
being played.
NG Replace radio receiver assy.
OK
Let it sit for a while before using (Condensation due to temperature change).

DI±2036
± DIAGNOSTICSAUDIO SYSTEM
2230 Author: Date:
2005 SEQUOIA (RM1146U)
Cassette tape cannot be insert or played
INSPECTION PROCEDURE
1 Check for any foreign object.
CHECK:
Check for any foreign objects.
Check that no foreign objects or defects are detected in the cassette tape player of the radio receiver
assembly.
OK:
No foreign objects or defects are detected.
NG Remove foreign object.
OK
2 Check cassette tape.
CHECK:
Check the cassette tape.
Check that the cassette tape is a normal tape with music or voice recorded.
OK:
Proper cassette tape with music or voice recorded.
NG End.
OK
DIDA9±01

± DIAGNOSTICSAUDIO SYSTEM
DI±2037
2231 Author: Date:
2005 SEQUOIA (RM1146U)
3 Replace cassette tape with another and recheck.
CHECK:
Replace the cassette tape with another one and recheck.
Replace the cassette tape with another normal one to see if the same trouble occurs again.
OK:
The function returns to be normal.
NG Replace radio receiver assy.
OK
End.

DI±2038
± DIAGNOSTICSAUDIO SYSTEM
2232 Author: Date:
2005 SEQUOIA (RM1146U)
Cassette tape cannot be ejected
INSPECTION PROCEDURE
1 Press ºEJECTº and check operation.
CHECK:
Press ºEJECTº and check the operation.
Press the cassette tape EJECT switch of the radio receiver assembly for 2 seconds or more and check
that the cassette tape is ejected.
OK:
The cassette tape is ejected.
NG Replace radio receiver assy.
OK
2 Check cassette tape.
CHECK:
Check the cassette tape.
Check that the ejected cassette tape does not have a peeled label, a cassette body deformation or
any other defect.
OK:
No fault on the cassette tape.
NG End.
OK
DIDAA±01