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

A000SX1E06

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.

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

  2. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY


    1. Remove the headlight dimmer switch Click here.

    2. Inspect the headlight dimmer switch Click here.


    NG

    REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY Click here

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    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) - N39-4 (EL) Always Below 1 Ω
      N35-16 (TR2) - N39-3 (ER) Always Below 1 Ω
      N35-17 (TL2) - Body ground Always 10 kΩ or higher
      N35-16 (TR2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK WINDSHIELD WIPER SWITCH ASSEMBLY


    1. Replace the windshield wiper switch assembly with a new or known good one Click here.

    2. Check that the turn signal switch.

      OK
      Turn signal switch operate normally.

    OK

    END (WINDSHIELD WIPER SWITCH ASSEMBLY WAS DEFECTIVE)

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here