Turn Signal Switch Circuit [09/2014 - ]: 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 Data List according to the display on the Techstream.
   COMBINATION METER
   
   

   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	-

   OK

   Normal conditions listed above are displayed.

NG → See step   2 

OK → See step   4 

1. Remove the headlight dimmer switch assembly. Refer to REMOVAL [09/2014 - ] .

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   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

   TEXT IN ILLUSTRATION
   
   

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

NG → See step   5 

OK: Go to next step 

1. w/ Multi-information Display:
   1. Disconnect the I17 combination meter assembly connector.
   2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      I25-12 (TR) - I17-9 (ER)	Always	Below 1 Ω
      I25-11 (TL) - I17-10 (EL)	Always	Below 1 Ω
      I25-13 (CR) - I17-8 (SW)	Always	Below 1 Ω
      I25-15 (EL) - Body ground	Always	Below 1 Ω
      I17-9 (ER) - Body ground	Always	10 kΩ or higher
      I17-10 (EL) - Body ground	Always	10 kΩ or higher
      I17-8 (SW) - Body ground	Always	10 kΩ or higher

2. w/o Multi-information Display:
   1. Disconnect the I17 and I18 combination meter assembly connectors.
   2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      I25-12 (TR) - I17-3 (ER)	Always	Below 1 Ω
      I25-11 (TL) - I17-4 (EL)	Always	Below 1 Ω
      I25-13 (CR) - I18-10 (SW)	Always	Below 1 Ω
      I25-15 (EL) - Body ground	Always	Below 1 Ω
      I17-3 (ER) - Body ground	Always	10 kΩ or higher
      I17-4 (EL) - Body ground	Always	10 kΩ or higher
      I18-10 (SW) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   4