LIGHTING SYSTEM Turn Signal Switch Circuit

DESCRIPTION

When the combination meter receives a signal from the windshield wiper switch, it turns the right and left turn signal lights on and off according to the operation of the headlight dimmer switch.

WIRING DIAGRAM

A01FUW0E01
A01FUW0E03

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING GTS (TURN SIGNAL SWITCH)


    1. Using the GTS, read the Data List Click here.

      Combination Meter
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Turn Signal Switch (Right) Turn signal switch (right turn position) signal / ON or OFF

      ON: Turn signal switch in right turn position

      OFF: Turn signal switch not in right turn position

      -
      Turn Signal Switch (Left) Turn signal switch (left turn position) signal / ON or OFF

      ON: Turn signal switch in left turn position

      OFF: Turn signal switch not in left turn position

      -
      OK
      The display is as specified in the normal condition column.

    NG
    OK
  2. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY


    1. Remove the headlight dimmer switch Click here.

    2. Inspect the headlight dimmer switch Click here.


    NG
    OK
  3. CHECK HARNESS AND CONNECTOR (HEADLIGHT DIMMER SWITCH - WINDSHIELD WIPER SWITCH)


    1. Disconnect the N28 headlight dimmer switch connector.

    2. Disconnect the N35 windshield wiper switch connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      N35-6 (GND1) - N28-16 (E) Always Below 1 Ω
      N35-13 (TL1) - N28-14 (TL)
      N35-14 (TR1) - N28-15 (TR)
      N35-12 (CR1) - N28-17 (CR)
      N35-6 (GND1) - Body ground Always 10 kΩ or higher
      N35-13 (TL1) - Body ground
      N35-14 (TR1) - Body ground
      N35-12 (CR1) - Body ground
      for RHD
      Tester Connection Condition Specified Condition
      N35-6 (GND1) - N28-16 (E)*1 Always Below 1 Ω
      N35-6 (GND1) - N28-21 (E)*2
      N35-13 (TL1) - N28-14 (TL)*1
      N35-13 (TL1) - N28-22 (TL)*2
      N35-14 (TR1) - N28-15 (TR)*1
      N35-14 (TR1) - N28-23 (TR)*2
      N35-12 (CR1) - N28-17 (CR)*1
      N35-12 (CR1) - N28-20 (CR)*2
      N35-6 (GND1) - Body ground Always 10 kΩ or higher
      N35-13 (TL1) - Body ground
      N35-14 (TR1) - Body ground
      N35-12 (CR1) - Body ground

      • *1: for Headlight Dimmer Switch (LH side)

      • *2: for Headlight Dimmer Switch (RH side)


    NG
    OK
  4. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH - COMBINATION METER)


    1. Disconnect the N35 windshield wiper switch connector.

    2. Disconnect the N39 combination meter connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N35-17 (TL2) - N39-10 (EL) Always Below 1 Ω
      N35-16 (TR2) - N39-9 (ER)
      N35-17 (TL2) - Body ground Always 10 kΩ or higher
      N35-16 (TR2) - Body ground

    NG
    OK