Toyota Tundra. Manual — part 557

HINT:

The radio has a noise prevention function to reduce noise when listening to the radio. If a loud
noise occurs, check whether the ground at the antenna mounting base and the noise prevention unit
are installed and wired correctly.

NOISE CONDITION CHART

HINT:



In the chart's left column, find the situation that matches the customer's vehicle. Then, in the
right column, find the part that is causing the noise. Check the noise filter on the part.



To save time and avoid a misdiagnosis, first make sure that the noise is not originating from
outside the vehicle.



Troubleshoot noise problems in order of loudness, starting with the loudest noise.



Setting the radio to a frequency that receives no signal may make recognition of the noise
problem easier.

OK: The noise source can be determined.

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TABLE

OK: REPAIR OR REPLACE NOISE SOURCE

NO SOUND CAN BE HEARD FROM SPEAKERS

Condition in Which Noise Occurs

Noise Type

Depressing accelerator pedal increases noise, and stopping engine
stops noise immediately

Generator noise

When A/C or heater is operating

Blower motor noise



When rapidly accelerating on unpaved road



When ignition switch is turned ON

Fuel pump noise



When horn switch is pressed and released



When horn switch is pressed and held down

Horn noise

Running engine causes soft noise, and stopping engine stops noise
immediately

Ignition noise

Noise occurs synchronously with turn signal flash

Flasher noise

Noise occurs during window washer operation

Washer noise

Running engine causes noise, but stopping engine does not stop
noise

Engine coolant temperature
sensor noise

When wiper is operating

Wiper noise

When brake pedal is depressed

Stop light switch noise

Other

Static electricity on vehicle

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INSPECTION PROCEDURE

1. CHECK SOUND SETTING

a. Enter the sound adjustment screen by pressing the "SOUND" switch on the AUDIO display.

Fig. 339: Identifying Audio Setting
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Set volume, fader, and balance to the initial values and check that sound is normal.

OK: Sound returns to normal.

HINT:

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

NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS
TABLE )

OK: END

CD CANNOT BE EJECTED

INSPECTION PROCEDURE

1. PRESS "EJECT" AND CHECK OPERATION

a. Press the CD eject switch in the display for 2 seconds or more and check that the CD ejects.

Fig. 340: Identifying CD Eject Switch

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Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: CD ejects.

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TABLE

OK: Go to Next Step

2. REPLACE CD WITH ANOTHER AND RECHECK

a. Replace the CD with a normal one and check that the CD ejects.

OK: CD ejects.

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TABLE

OK: CD IS FAULTY

CD CANNOT BE INSERTED OR IS EJECTED RIGHT AFTER INSERTION

INSPECTION PROCEDURE

1. CHECK IF PROPER CD IS INSERTED

a. Make sure that the CD is an audio CD or a CD with a MP3 or WMA file, and that the CD is not

deformed, flawed, stained, burred or otherwise defective.

OK: CD is a normal audio CD.

HINT:



Translucent or uniquely-shaped CDs cannot be played.



Commercial audio CDs can be played.



CD-DA files on CD-ROMs, CD-Rs, and CD-RWs can be played.



MP3 and WMA files on CD-ROMs, CD-Rs and CD-RWs can be played.



For details on playable CDs, refer to the Owner's Manual .

NG: CD IS FAULTY

OK: Go to Next Step

2. CHECK THAT CD IS INSERTED PROPERLY

a. Check whether or not the CD is inserted upside down.

OK: CD is properly inserted.

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NG: INSERT CD PROPERLY

OK: Go to Next Step

3. CLEAN CD

a. Clean the disc by wiping the CD's underside radially with a soft cloth.

Fig. 341: Cleaning Disc Surface With Soft Dry Cloth
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: Malfunction disappears.

NG: Go to step 4

OK: CD WAS DIRTY

4. REPLACE CD WITH ANOTHER AND RECHECK

a. Replace the CD with a normal one and check if the same problem occurs again.

OK: Malfunction disappears.

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TABLE

OK: CD IS FAULTY

CD SOUND SKIPS

INSPECTION PROCEDURE

1. CLEAN CD

a. If the disc is dirty, clean the disc by wiping the CD's underside radially with a soft cloth.

NOTE:

Do not use a conventional record cleaner or antistatic preservative.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra