Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001H5VZ
Model Year Start: 2020 Model: Corolla Prod Date Range: [01/2019 - 09/2022]
Title: LIGHTING (EXT): LIGHTING SYSTEM (for HV Model): Automatic High Beam System does not Operate or Operation Indicator does not Illuminate; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]

Automatic High Beam System does not Operate or Operation Indicator does not Illuminate

DESCRIPTION

The main body ECU (multiplex network body ECU) controls the automatic high beam system based on signals received from the forward recognition camera.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

    Click here 2020 MY Corolla Corolla HV [01/2019 - 04/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION

  • When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.
  • If the forward recognition camera has been replaced with a new one, be sure to perform Forward Recognition Camera Learning.

    One Time Recognition: Click here 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; CRUISE CONTROL: FRONT CAMERA: ADJUSTMENT (ONE TIME RECOGNITION)

    Sequential Recognition: Click here 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; CRUISE CONTROL: FRONT CAMERA: ADJUSTMENT (SEQUENTIAL RECOGNITION)

  • Before performing troubleshooting, check that the low beam headlights and high beam headlights illuminate correctly.
  • When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
  • If the forward recognition camera cannot operate due to high vehicle interior temperatures, bad weather (rain, fog, etc.) or fogged up or dirty glass, the automatic high beam system will not operate and the automatic high beam indicator will not illuminate.
  • Before performing troubleshooting, check that the front radar sensor system operates correctly.

    Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; CRUISE CONTROL: FRONT RADAR SENSOR SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

PROCEDURE

1.

CHECK VEHICLE CONTROL HISTORY*

(a) Using the Techstream, check for Vehicle Control History (RoB).

Body Electrical > Front Recognition Camera (Front Lighting Control) > Utility

Tester Display

Vehicle Control History (RoB)

Result

Proceed to

Vehicle Control History X204E is not output

A

Vehicle Control History X204E is output

B

B

GO TO VEHICLE CONTROL HISTORY

A

2.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Chassis / Front Recognition Camera / Data List.

(e) Read the Data List according to the display on the Techstream.

Chassis > Front Recognition Camera > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Front Recognition Camera High Temperature 2

Forward recognition camera condition

Not High Temperature or High Temperature

Not High Temperature: 65°C (149°F) or lower

High Temperature: 65°C (149°F) or higher

When "High Temperature" is displayed, the automatic high beam system is temporarily suspended.

Chassis > Front Recognition Camera > Data List

Tester Display

Front Recognition Camera High Temperature 2

OK:

"Not High Temperature" is displayed on the Techstream.

HINT:

If "High Temperature" is displayed, move the vehicle to a cool place and allow the temperature of the forward recognition camera to decrease before continuing with troubleshooting.

NG

END (TEMPORARY SUSPENSION OF AUTOMATIC HIGH BEAM SYSTEM DUE TO HIGH FORWARD RECOGNITION CAMERA TEMPERATURE)

OK

3.

CHECK AUTOMATIC HIGH BEAM INDICATOR LIGHT

(a) Check the operation of the automatic high beam indicator light.

(1) Turn the power switch on (IG).

(2) Turn the light control switch to the AUTO or head position.

(3) Cover the automatic light control sensor to turn the low beam headlights on.

(4) Move the dimmer switch to the high position.

(5) Press the auto high beam switch.

Result

Proceed to

OK (The automatic high beam indicator light and the auto high beam switch indicator illuminate)

A

NG (Automatic high beam indicator light does not illuminate)

B

NG (Auto high beam switch indicator does not illuminate)

C

NG (Automatic high beam indicator light and auto high beam switch indicator do not operate)

D

B

GO TO STEP 6

C

GO TO OTHER PROBLEM (Proceed to Automatic High Beam Switch Indicator does not Come ON)

D

GO TO STEP 7

A

4.

READ VALUE USING TECHSTREAM

*1

Forward Recognition Camera

(Automatic High Beam Sensor)

*2

Work Light or Equivalent

*a

100 mm or less

(a) Shine a light on the automatic high beam sensor.

HINT:

If troubleshooting is being performed in a bright area, such as outside on a sunny day, it will not be necessary to perform this step.

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch on (IG).

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / Main Body / Data List.

(f) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Auto H Beam STS0

Automatic high beam sensor current state

Undetec, CAM NA, No sens, Hlight, Taillgt, Speed, Daytime, Village, Malfunc, Delay, Aim Lmt, SAE Mod, Undefin or LIN Err

Condition can be displayed

-

Body Electrical > Main Body > Data List

Tester Display

Auto H Beam STS0

OK:

"Daytime" is displayed on the Techstream.

NG

REPLACE FORWARD RECOGNITION CAMERA

OK

5.

READ VALUE USING TECHSTREAM

*1

Cardboard or Equivalent Object

*a

150 mm or more

*b

3 mm or more

(a) Cover the automatic high beam sensor with an opaque object, such as cardboard.

NOTICE:

  • Make sure that there is no clearance between the cardboard or equivalent object and the area of the windshield glass in front of the automatic high beam sensor.
  • If there is any clearance, light may shine on the automatic high beam sensor and the value of the Data List will not change.

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch on (IG).

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / Main Body / Data List.

(f) Read the Data List according to the display on the Techstream.

HINT:

As it may take time for the values in the Data List to change, wait at least 10 seconds before reading the Data List.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Auto H Beam STS0

Automatic high beam sensor current state

Undetec, CAM NA, No sens, Hlight, Taillgt, Speed, Daytime, Village, Malfunc, Delay, Aim Lmt, SAE Mod, Undefin or LIN Err

Condition can be displayed

-

Body Electrical > Main Body > Data List

Tester Display

Auto H Beam STS0

OK:

"Speed" is displayed on the Techstream.

OK

USE SIMULATION METHOD TO CHECK

NG

REPLACE FORWARD RECOGNITION CAMERA

6.

PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Combination Meter / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

Body Electrical > Combination Meter > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Multi Display All (White)

Multi-information display (White display)

ON

-

Body Electrical > Combination Meter > Active Test

Tester Display

Multi Display All (White)

OK:

The multi-information display in the combination meter assembly turns on according to the operation of the Active Test.

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

NG

REPLACE COMBINATION METER ASSEMBLY 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; METER / GAUGE / DISPLAY: COMBINATION METER: REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; METER / GAUGE / DISPLAY: COMBINATION METER: REMOVAL

7.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Auto High Beam Main Switch

Auto high beam switch signal

OFF or ON

OFF: Auto high beam switch not pressed

ON: Auto high beam switch pressed

-

Body Electrical > Main Body > Data List

Tester Display

Auto High Beam Main Switch

OK:

Normal conditions listed above are displayed.

NG

GO TO STEP 9

OK

8.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Auto H Beam STS0

Automatic high beam sensor current state

Undetec, CAM NA, No sens, Hlight, Taillgt, Speed, Daytime, Village, Malfunc, Delay, Aim Lmt, SAE Mod, Undefin or LIN Err

Condition can be displayed

-

Body Electrical > Main Body > Data List

Tester Display

Auto H Beam STS0

OK:

"Daytime" or "Speed" is displayed on the Techstream.

OK

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NG

REPLACE FORWARD RECOGNITION CAMERA

9.

INSPECT AUTO HIGH BEAM SWITCH

(a) Remove the auto high beam switch.

Click here 2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; LIGHTING (EXT): AUTOMATIC HIGH BEAM MAIN SWITCH: REMOVAL

(b) Inspect the auto high beam switch.

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NG

REPLACE AUTO HIGH BEAM SWITCH

OK

10.

CHECK HARNESS AND CONNECTOR (AUTO HIGH BEAM SWITCH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)

(a) Disconnect the I85 main body ECU (multiplex network body ECU) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I52-5 (+B) - I85-26 (AHBI)

Always

Below 1 Ω

I52-5 (+B) or I85-26 (AHBI) - Body ground

Always

10 kΩ or higher

I52-2 (E) - Body ground

Always

Below 1 Ω

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR