Turn Signal Switch Circuit [12/2013 - ]: 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: Body Electrical / Combination Meter / Data List.
5. Read the display on the Techstream.

   Body Electrical > Combination Meter > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Turn Signal Switch (Right)	Turn signal switch (right) signal	ON or OFF	ON: Turn signal switch (right) on OFF: Turn signal switch (right) off	-
   Turn Signal Switch (Left)	Turn signal switch (left) signal	ON or OFF	ON: Turn signal switch (left) on OFF: Turn signal switch (left) off	-
   Turn Switch Signal (Full Turn)	Turn signal switch (full turn) signal	ON or OFF	ON: Turn signal switch (left or right) on OFF: Turn signal switch (left and right) off	-

   Body Electrical > Combination Meter > Data List 

   Tester Display
   Turn Signal Switch (Right)
   Turn Signal Switch (Left)
   Turn Switch Signal (Full Turn)

   OK

   Normal conditions listed above are displayed.

   Result

   Proceed to
   OK
   NG

Result:  1

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2013 - 11/2016]  Refer to  PROBLEM SYMPTOMS TABLE [11/2016 - ] 

Result:  2

NG 

See step  2

1. Remove the headlight dimmer switch assembly.

   Refer to REMOVAL [12/2013 - ]

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Headlight Dimmer Switch Assembly)

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   12 (TR) - 15 (EL)	Turn signal switch in neutral position	10 kΩ or higher
   11 (TL) - 15 (EL)	Turn signal switch in neutral position	10 kΩ or higher
   13 (CR) - 15 (EL)	Turn signal switch in neutral position	10 kΩ or higher
   12 (TR) - 15 (EL)	Turn signal switch in right turn position	Below 1 Ω
   13 (CR) - 15 (EL)	Turn signal switch in full right turn position	Below 1 Ω
   11 (TL) - 15 (EL)	Turn signal switch in left turn position	Below 1 Ω
   13 (CR) - 15 (EL)	Turn signal switch in full left turn position	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY. Refer to  REMOVAL [12/2013 - ] 

Result:  1

OK 

See step  3

1. Disconnect the F21 combination meter assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F59-12 (TR) - F21-9 (ER)	Always	Below 1 Ω
   F59-11 (TL) - F21-10 (EL)	Always	Below 1 Ω
   F59-13 (CR) - F21-8 (SW)	Always	Below 1 Ω
   F59-12 (TR) - Body ground	Always	10 kΩ or higher
   F59-11 (TL) - Body ground	Always	10 kΩ or higher
   F59-13 (CR) - Body ground	Always	10 kΩ or higher
   F59-15 (EL) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result:  1

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2013 - 11/2016]  Refer to  PROBLEM SYMPTOMS TABLE [11/2016 - ] 

Result:  2

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR