Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001AO0D
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 -           ]
Title: LIGHTING (EXT): LIGHTING SYSTEM (for HV Model with Cornering Light): Parking Light/Daytime Running Light Circuit; 2019 - 2022 MY Avalon HV [04/2018 -        ]

Parking Light/Daytime Running Light Circuit

DESCRIPTION

Parking light function:

  • When the main body ECU (multiplex network body ECU) receives the light control switch position signal, it sends an illumination request signal to the headlight ECU sub-assembly LH/RH and illuminates the parking lights.

Daytime running light function:

  • When the operation conditions of the daytime running lights are met, the main body ECU (multiplex network body ECU) sends an illumination request signal to the headlight ECU sub-assembly LH/RH and illuminates the daytime running lights.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information the headlight ECU sub-assembly LH.

    Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (EXT): LIGHTING SYSTEM (for HV Model with Cornering Light): INITIALIZATION

  • If the headlight assembly LH has been replaced, it is necessary to synchronize the vehicle information the headlight ECU sub-assembly LH.

    Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (EXT): LIGHTING SYSTEM (for HV Model with Cornering Light): INITIALIZATION

PROCEDURE

1.

CHECK LIGHTS

(a) Check the illumination of each parking lights and daytime running lights.

Result

Proceed to

LH side parking light and daytime running light does not illuminate

A

RH side parking light and daytime running light does not illuminate

B

B

GO TO STEP 5

A

2.

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 / HL AutoLeveling / Active Test.

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

Body Electrical > HL AutoLeveling > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Clearance Light

Parking lights

OFF or ON

-

Daytime Running Light

Daytime running lights

OFF or ON

-

Body Electrical > HL AutoLeveling > Active Test

Tester Display

Clearance Light

Body Electrical > HL AutoLeveling > Active Test

Tester Display

Daytime Running Light

OK:

Parking lights and daytime running lights illuminate.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 2019 - 2020 MY Avalon HV [04/2018 - 08/2020]; LIGHTING (EXT): LIGHTING SYSTEM (for HV Model with Cornering Light): PROBLEM SYMPTOMS TABLE 2021 MY Avalon HV [08/2020 - 08/2021]; LIGHTING (EXT): LIGHTING SYSTEM (for HV Model with Cornering Light): PROBLEM SYMPTOMS TABLE 2022 MY Avalon HV [08/2021 -        ]; LIGHTING (EXT): LIGHTING SYSTEM (for HV Model with Cornering Light): PROBLEM SYMPTOMS TABLE

NG

3.

CHECK HEADLIGHT ASSEMBLY LH

(a) Remove each headlight ECU sub-assembly, interchange the headlight assembly LH with RH and connect the connectors.

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (EXT): HEADLIGHT ASSEMBLY: REMOVAL

NEXT

4.

CHECK OPERATION (PARKING LIGHTS AND DAYTIME RUNNING LIGHTS)

(a) Check the operation of the parking lights and daytime running lights.

OK:

The parking lights and daytime running lights operate normally.

OK

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH

NG

REPLACE HEADLIGHT ASSEMBLY LH

5.

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 / HL AutoLeveling (Sub) / Active Test.

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

Body Electrical > HL AutoLeveling (Sub) > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Clearance Light

Parking lights

OFF or ON

-

Daytime Running Light

Daytime running lights

OFF or ON

-

Body Electrical > HL AutoLeveling (Sub) > Active Test

Tester Display

Clearance Light

Body Electrical > HL AutoLeveling (Sub) > Active Test

Tester Display

Daytime Running Light

OK:

Parking lights and daytime running lights illuminate.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 2019 - 2020 MY Avalon HV [04/2018 - 08/2020]; LIGHTING (EXT): LIGHTING SYSTEM (for HV Model with Cornering Light): PROBLEM SYMPTOMS TABLE 2021 MY Avalon HV [08/2020 - 08/2021]; LIGHTING (EXT): LIGHTING SYSTEM (for HV Model with Cornering Light): PROBLEM SYMPTOMS TABLE 2022 MY Avalon HV [08/2021 -        ]; LIGHTING (EXT): LIGHTING SYSTEM (for HV Model with Cornering Light): PROBLEM SYMPTOMS TABLE

NG

6.

CHECK HEADLIGHT ASSEMBLY RH

(a) Remove each headlight ECU sub-assembly, interchange the headlight assembly RH with LH and connect the connectors.

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (EXT): HEADLIGHT ASSEMBLY: REMOVAL

NEXT

7.

CHECK OPERATION (PARKING LIGHTS AND DAYTIME RUNNING LIGHTS)

(a) Check the operation of the parking lights and daytime running lights.

OK:

The parking lights and daytime running lights operate normally.

OK

REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH

NG

REPLACE HEADLIGHT ASSEMBLY RH