Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM10000000271XC
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): Sound cannot be Heard Sound Quality is Poor only when Replaying USB Storage Device or "iPod"; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]

Sound cannot be Heard Sound Quality is Poor only when Replaying USB Storage Device or "iPod"

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

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.

INSPECT ANTENNA CORD SUB-ASSEMBLY (RADIO AND DISPLAY RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY)

(a) Disconnect the x5 radio and display receiver assembly connector.

(b) Disconnect the x4 No. 1 stereo jack adapter assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

x5-2(US1-) - x4-4(D-)

Always

Below 1 Ω

x5-3(US1+) - x4-1(D+)

Always

Below 1 Ω

x5-5(USG1) - x4-5(UJSS)

Always

Below 1 Ω

x5-2(US1-) or x4-4(D-) - Body ground

Always

10 kΩ or higher

x5-3(US1+) or x4-1(D+) - Body ground

Always

10 kΩ or higher

x5-5(USG1) or x4-5(UJSS) - Body ground

Always

10 kΩ or higher

NG

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

OK

2.

CHECK NO. 1 STEREO JACK ADAPTER ASSEMBLY

(a) Replace the No. 1 stereo jack adapter assembly with a new or known good one.

Click here 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; AUDIO / VIDEO: STEREO JACK ADAPTER ASSEMBLY: REMOVAL 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; AUDIO / VIDEO: STEREO JACK ADAPTER ASSEMBLY: REMOVAL

(b) Check if the problem symptom recurs.

Result

Proceed to

Malfunction disappears

A

Malfunction occurs

B

A

END (NO. 1 STEREO JACK ADAPTER ASSEMBLY MALFUNCTION)

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