Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM10000000271XB
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 -           ]
Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for Knobless Radio and Display Receiver): Noise Occurs only for Radio; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]

Noise Occurs only for Radio

CAUTION / NOTICE / HINT

HINT:

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

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for Knobless Radio and Display Receiver): PRECAUTION

PROCEDURE

1.

CHECK CONDITIONS AROUND THE TIME THE PROBLEM OCCURRED

(a) Check for situations/locations when noise occurs.

Result

Proceed to

Noise occurs in all areas

A

Noise occurs in specific areas

B

B

RADIO WAVES ARE DISTURBED (RADIO WAVE ENVIRONMENT, ETC. EXTERNAL FACTOR)

A

2.

CHECK FOR ADDITIONAL DEVICES (SUNSHADE FILM, TELECOMMICATIONS ANTENNAS, ETC)

(a) Check that there is no sunshade film or additional devices such as a telecommunications antenna installed.

OK:

Aftermarket devices (including non-genuine wiring) are not installed.

HINT:

The vehicle is equipped with noise filters that prevent other systems in the vehicle from affecting the radio. Therefore, the system will not be affected by large interference. If the system is affected by large interference, confirm that no non-standard wire harnesses are installed, all of the noise filters are installed correctly, and the mount of the antenna is correctly earthed.

NG

AFTERMARKET DEVICES ARE THE NOISE SOURCE

OK

3.

CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

(a) Disconnect the connector RA from the radio and display receiver assembly. Then operate the radio and display receiver assembly again to check for noise.

Result

Proceed to

Noise does not occur

A

Noise occurs

B

B

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; AUDIO / VIDEO: RADIO RECEIVER: REMOVAL 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; AUDIO / VIDEO: RADIO RECEIVER: REMOVAL

A

4.

CHECK INSTALLATION OF ANTENNA EARTH

(a) Make sure that the mount of the No. 2 antenna cord sub-assembly, antenna cord sub-assembly (TypeA) is earthed securely to the vehicle body. (for Hatchback model)

(b) Make sure that the mount of the antenna cord sub-assembly is earthed securely to the vehicle body. (for Sedan model)

OK:

Installation is normal

NG

PROPERLY INSTALL ANTENNA EARTH

OK

5.

INSPECT NO. 4 ANTENNA CORD SUB-ASSEMBLY (DISCONNECT CONNECTOR)

(a) With the connector between the window glass antenna and the No. 4 antenna cord sub-assembly disconnected, operate the radio and display receiver assembly again and check for noise.

Result

Proceed to

Noise occurs

A

Noise does not occur

B

B

REPLACE NO. 4 ANTENNA CORD SUB-ASSEMBLY

A

6.

INSPECT NO. 1 AMPLIFIER ANTENNA ASSEMBLY (DISCONNECT CONNECTOR)

(a) With the connector between the No. 1 amplifier antenna assembly and No. 2 antenna cord sub-assembly disconnected, operate the radio and display receiver assembly again and check for noise.

Result

Proceed to

Noise occurs

A

Noise does not occur

B

B

REPLACE NO. 1 AMPLIFIER ANTENNA ASSEMBLY

A

7.

INSPECT NO. 2 ANTENNA CORD SUB-ASSEMBLY (DISCONNECT CONNECTOR)

(a) With the connector between the No. 2 antenna cord sub-assembly and antenna cord sub-assembly disconnected, operate the radio and display receiver assembly again and check for noise.

Result

Proceed to

Noise occurs

A

Noise does not occur

B

A

REPLACE ANTENNA CORD SUB-ASSEMBLY 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; AUDIO / VIDEO: RADIO ANTENNA CORD (for Sedan): REMOVAL 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; AUDIO / VIDEO: RADIO ANTENNA CORD (for Sedan): REMOVAL

B

REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; AUDIO / VIDEO: RADIO ANTENNA CORD (for Sedan): REMOVAL 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; AUDIO / VIDEO: RADIO ANTENNA CORD (for Sedan): REMOVAL