Toyota Corolla Cross: Radio Broadcast cannot be Received or Poor Reception

CAUTION / NOTICE / HINT

NOTICE:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed.

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PROCEDURE

(a) Check the radio automatic station search function.

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

B

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

A

(a) Check if any optional components that may decrease reception capacity, such as a sunshade film or 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) Disconnect the antenna connector from the radio and display receiver assembly.

(b) Check for noise

(1) Turn the ignition switch to ACC with the radio and display 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 radio and display receiver assembly antenna jack and check that noise can be heard from the speakers.

OK:

Noise can be heard from the speakers.

NG

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

OK

(a) Disconnect the RA radio and display receiver assembly connector.

(b) Measure the voltage according to the value(s) in the table below. Standard Voltage: Tester Connection Condition Specified Condition RA-1 (ANT+) - Body ground Ignition switch ACC Radio switch on and FM or AM selected 7 to 16 V

*a Component without harness connected (Radio and Display Receiver Assembly)

NG

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

OK

(a) Replace the antenna cord sub-assembly with a new or known good one and check if radio broadcasts can be received normally.

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OK:

Radio broadcasts can be received normally.

OK

END

NG

(a) Replace the No. 2 antenna cord sub-assembly with a new or known good one and check if radio broadcasts can be received normally.

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OK:

Radio broadcasts can be received normally.

OK

END

NG

(a) Replace the No. 3 antenna cord sub-assembly with a new or known good one and check if radio broadcasts can be received normally.

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OK:

Radio broadcasts can be received normally.

OK

END

NG

(a) Replace the roof antenna assembly with a new or known good one and check if radio broadcasts can be received normally.

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OK:

Radio broadcasts can be received normally.

OK

END

NG

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

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