Turn Signal Switch Circuit [12/2021 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Chassis / Steering Angle Sensor / Data List.
5. 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.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2021 - ] 

Result: 

NG 

See step  2

1. Remove the turn signal switch.

   Refer to REMOVAL [11/2018 - ]

2. Inspect the turn signal switch.

   Refer to INSPECTION [11/2018 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE TURN SIGNAL SWITCH. Refer to  REMOVAL [11/2018 - ] 

Result: 

OK 

See step  3

1. Remove the steering wheel switch housing.

   Refer to REMOVAL [12/2021 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]

2. Inspect the steering wheel switch housing.

   Refer to INSPECTION [11/2018 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE STEERING SENSOR. Refer to  REMOVAL [12/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ] 

Result: 

NG 

REPLACE STEERING WHEEL SWITCH HOUSING. Refer to  REMOVAL [12/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ]