Toyota Tundra Service Manual: Radio Broadcast cannot be Received (Bad Reception)

Toyota Tundra Service Manual / Audio, Visual, Telematics / Audio / Video / Audio And Visual System / Radio Broadcast cannot be Received (Bad Reception)

PROCEDURE

1.

CHECK IF RADIO AUTO-SEARCH FUNCTIONS PROPERLY

(a) Check the radio automatic station search function by activating it.

OK:

Automatic station search function stops on a station.

OK

USE SIMULATION METHOD TO CHECK

NG

2.

CHECK OPTIONAL COMPONENTS

(a) Check if any optional components that may decrease reception capacity, such as sunshade film or a telephone antenna, are installed.

OK:

Optional components are installed.

NOTICE:

Do not remove optional components without permission of the customer.

OK

REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)

NG

3.

CHECK RADIO ANTENNA

(a) Remove the pull top antenna pole sub-assembly from the antenna with holder assembly

(b) Place the tip of a screwdriver on the antenna and check that noise is heard from the speakers.

OK:

Noise occurs.

Result

Result

Proceed to

OK (for Column Shift Type)

A

OK (for Floor Shift Type)

B

NG

C

A

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

B

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

C

4.

CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY (ANTENNA)

(a) Remove the antenna connector from the radio and display receiver assembly.

(b) Turn the ignition switch to ACC with the radio and display receiver assembly connector connected.

(c) Turn on the radio and turn into AM mode.

(d) Place a screwdriver, thin wire or other metal object on the radio and display receiver assembly antenna jack and check that noise can be heard from the speakers.

OK:

Noise occurs.

Result

Result

Proceed to

OK

A

NG (for Column Shift Type)

B

NG (for Floor Shift Type)

C

B

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

C

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

A

5.

CHECK PULL TOP ANTENNA POLE SUB-ASSEMBLY

(a) Check that the pull top antenna pole sub-assembly is securely installed (See page ).

OK:

The pull top antenna pole sub-assembly is installed properly.

NG

REINSTALL PULL TOP ANTENNA POLE SUB-ASSEMBLY

OK

6.

CHECK FENDER ANTENNA ASSEMBLY

(a) Replace the fender antenna assembly and check if radio broadcasts can be received normally (See page ).

OK:

Radio broadcasts can be received normally.

Result

Result

Proceed to

OK

A

NG (for Column Shift Type)

B

NG (for Floor Shift Type)

C

A

END (FENDER ANTENNA ASSEMBLY IS DEFECTIVE)

B

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

C

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

    Problem Symptoms Table

    Radio Receiver Power Source Circuit

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