Toyota Tacoma 2015-2018 Service Manual: Radio Broadcast cannot be Received or Poor Reception

PROCEDURE

(a) Check the radio automatic station search function.

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

B

REPLACE NAVIGATION RECEIVER ASSEMBLY

A

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

NOTICE:

Do not remove optional components without the permission of the customer.

B

REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)

A

(a) Preparation for check (1) Remove the antenna connector from the navigation receiver assembly.

(b) Check for noise

(1) Turn the ignition switch to ACC with the navigation receiver assembly connector connected.

(2) Turn the radio on and tune into AM mode.

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

OK:

Noise can be heard from the speakers.

NG

REPLACE NAVIGATION RECEIVER ASSEMBLY

OK

(a) Disconnect the navigation receiver assembly connector.

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

Standard Voltage:

NG

REPLACE NAVIGATION RECEIVER ASSEMBLY

OK

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

OK:

Radio broadcasts can be received normally.

OK

END

NG

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

OK:

Radio broadcasts can be received normally.

OK

END

NG

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

OK:

Radio broadcasts can be received normally.

OK

END

NG

REPLACE NAVIGATION RECEIVER ASSEMBLY