| Last Modified: 07-31-2024 | 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 - ] | ||
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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.
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![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](/t3Portal/stylegraphics/info.gif)
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) |
|
|
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 |
|
|
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
|
|
|
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 |
|
|
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 |
|
|
|
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 |
|
|
|
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
|
| B |
|
REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY
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