Toyota Tundra. Manual — part 499

b. Measure the resistance according to the value(s) in the table below.

Standard resistance

FRONT NO. 2 SPEAKER LH TESTER CONNECTION SPECIFIED CONDITION

Fig. 115: Identifying K12 Speaker Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPLACE FRONT NO. 2 SPEAKER LH (See REMOVAL )

OK: Go to Next Step

11. INSPECT FRONT NO. 2 SPEAKER RH

a. Disconnect the K10 speaker connector.

b. Measure the resistance according to the value(s) in the table below.

Standard resistance

FRONT NO. 2 SPEAKER RH TESTER CONNECTION SPECIFIED CONDITION

Tester Connection Condition Specified Condition
3(TWL+)-4(TWL-) Always

1.3 to 2.3 ohms

1(+)-3(TWL+)

Always

Below 1 ohms

2(-)-4(TWL-)

Tester Connection Condition Specified Condition

3(TWR+)-4(TWR-) Always

1.3 to 2.3 ohms

1(+)-3(TWR+)

Always

Below 1 ohms

2(-)-4(TWR-)

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

Fig. 116: Identifying K10 Speaker Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPLACE FRONT NO. 2 SPEAKER RH (See REMOVAL )

OK: Go to Next Step

12. INSPECT REAR NO. 1 SPEAKER LH

a. Disconnect the O7 speaker connector.

b. Measure the resistance according to the value(s) in the table below.

Standard resistance

REAR NO. 1 SPEAKER LH TESTER CONNECTION SPECIFIED CONDITION

Fig. 117: Identifying O7 Speaker Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPLACE REAR NO. 1 SPEAKER LH (See REMOVAL )

OK: REPLACE REAR NO. 1 SPEAKER RH (See REMOVAL )

Tester Connection Condition Specified Condition

1-2

Always

1.5 to 2.1 ohms

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2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

NOISE OCCURS

INSPECTION PROCEDURE

1. CHECK SPEAKER INSTALLATION

a. Check that each speaker is securely installed.

OK: Each speaker is securely installed.

NG: INSTALL SPEAKER PROPERLY

OK: Go to Next Step

2. IDENTIFY NOISE SOURCE

a. Check the noise condition.

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

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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2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

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.

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

OK: REPAIR OR REPLACE NOISE SOURCE

NO SOUND CAN BE HEARD FROM SPEAKERS

INSPECTION PROCEDURE

1. CHECK SOUND SETTING

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

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.

Fig. 118: Identifying Audio Setting
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

OK: END

CD CANNOT BE EJECTED

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra