Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001AYCJ
Model Year Start: 2019 Model: Avalon Prod Date Range: [04/2018 -           ]
Title: LIGHTING (EXT): LIGHTING SYSTEM (for Gasoline Model without Cornering Light): Turn Signal Switch Circuit; 2019 - 2022 MY Avalon [04/2018 -        ]

Turn Signal Switch Circuit

DESCRIPTION

The steering sensor receives the turn signal switch information and controls the turn signal lights.

WIRING DIAGRAM

PROCEDURE

1.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Chassis / Steering Angle Sensor / Data List.

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

Chassis > Steering Angle Sensor > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Turn Signal Switch (Right)

Turn signal switch (right turn position) signal

OFF or ON

OFF: Turn signal switch not in right turn position

ON: Turn signal switch in right turn position

-

Turn Signal Switch (Left)

Turn signal switch (left turn position) signal

OFF or ON

OFF: Turn signal switch not in left turn position

ON: Turn signal switch in left turn position

-

Cornering Light/Front Side Illuminate Light Switch

Turn signal switch (full turn) signal

OFF or ON

OFF: Turn signal switch not in left or right turn position

ON: Turn signal switch in left or right full turn position

-

Chassis > Steering Angle Sensor > Data List

Tester Display

Turn Signal Switch (Right)

Turn Signal Switch (Left)

Cornering Light/Front Side Illuminate Light Switch

OK:

Normal conditions listed above are displayed.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 2019 - 2020 MY Avalon [04/2018 - 08/2020]; LIGHTING (EXT): LIGHTING SYSTEM (for Gasoline Model without Cornering Light): PROBLEM SYMPTOMS TABLE 2021 MY Avalon [08/2020 - 08/2021]; LIGHTING (EXT): LIGHTING SYSTEM (for Gasoline Model without Cornering Light): PROBLEM SYMPTOMS TABLE 2022 MY Avalon [08/2021 -        ]; LIGHTING (EXT): LIGHTING SYSTEM (for Gasoline Model without Cornering Light): PROBLEM SYMPTOMS TABLE

NG

2.

INSPECT TURN SIGNAL SWITCH

(a) Remove the turn signal switch.

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

(b) Inspect the turn signal switch.

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

NG

REPLACE TURN SIGNAL SWITCH

OK

3.

INSPECT STEERING WHEEL SWITCH HOUSING

(a) Remove the steering wheel switch housing.

Click here 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; LIGHTING (EXT): SWITCH HOUSING: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; LIGHTING (EXT): SWITCH HOUSING: REMOVAL

(b) Inspect the steering wheel switch housing.

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (EXT): SWITCH HOUSING: INSPECTION

OK

REPLACE STEERING SENSOR 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: STEERING ANGLE SENSOR: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: STEERING ANGLE SENSOR: REMOVAL

NG

REPLACE STEERING WHEEL SWITCH HOUSING 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; LIGHTING (EXT): SWITCH HOUSING: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; LIGHTING (EXT): SWITCH HOUSING: REMOVAL