Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM10000000262LP
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 -           ]
Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for 8 Inch Display Type (w/ Single Knob Type) or 10.5 Inch Display Type): Even though Headlights are Turned on Head-unit does not Dim the Display; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]

Even though Headlights are Turned on Head-unit does not Dim the Display

WIRING DIAGRAM

CAUTION / NOTICE / HINT

HINT:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for 8 Inch Display Type (w/ Single Knob Type) or 10.5 Inch Display Type): PRECAUTION

PROCEDURE

1.

CHECK IMAGE QUALITY SETTING

(a) Select settings icon from the screen.

(b) Select "Display" from the "Settings" menu screen.

(c) Select "Screen" to display the settings screen.

(d) Turn the light control switch to the tail or head position.

(e) Check that the "Automatic" setting on the display adjustment screen is set to on.

Result

Proceed to

"Automatic" setting is set to off.

A

"Automatic" setting is set to on.

B

A

CHANGE "Automatic" SCREEN SETTING TO ON

B

2.

CHECK RHEOSTAT SETTING

(a) Check the rheostat setting.

Result

Proceed to

Set to maximum brightness

A

Set to other than the maximum brightness

B

A

SET RHEOSTAT SETTING TO OTHER THAN MAXIMUM BRIGHTNESS

B

3.

CHECK VEHICLE SIGNAL (OPERATION CHECK)

(a) Enter diagnostic mode.

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for 8 Inch Display Type (w/ Single Knob Type) or 10.5 Inch Display Type): DIAGNOSIS SYSTEM

(b) Select "Function Check/Setting" from the "Service Menu" screen.

(c) Select "System Sensors Check" from the "Function Check/Setting I" screen.

(d) Operate the light control switch and check that the display changes between ON and OFF accordingly.

OK:

TAIL

Condition

Display

Light control switch OFF

OFF

Light control switch TAIL or HEAD

ON

ADIM/TCAN

Condition

Display

Ignition switch ON, Light control switch TAIL or HEAD, Automatic light control sensor is covered by hand

Dimmed

Ignition switch ON, Light control switch TAIL or HEAD, Automatic light control sensor is not covered by hand

Not dimmed

HINT:

This display is updated once per second.

Result

Proceed to

Normal

A

TAIL signal malfunction

B

ADIM/TCAN signal malfunction

C

A

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

C

GO TO CAN COMMUNICATION SYSTEM

B

4.

CHECK HARNESS AND CONNECTOR (ILL+ CIRCUIT)

(a) Disconnect the I55 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

I55-25 (ILL+) - Body ground

Ignition switch ON, Light control switch TAIL or HEAD

11 to 14 V

NG

REPLACE OR REPLACE HARNESS OR CONNECTOR

OK

5.

CHECK HARNESS AND CONNECTOR (RADIO AND RECEIVER ASSEMBLY - COMBINATION METER ASSEMBLY)

(a) Disconnect the I55 radio and display receiver assembly connector.

(b) Disconnect the I4 combination meter assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I55-24 (ILL-) - I4-23 (ILL-)

Always

Below 1 Ω

OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR