LIGHTING SYSTEM Turn Signal Switch Circuit

DESCRIPTION

The combination meter receives turn signal switch information and controls the turn signal lights.

WIRING DIAGRAM

A01BH2SE01
A01BH2SE02

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

    INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY Click here

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

  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 - COMBINATION METER)


    1. Disconnect the H74 headlight dimmer switch connector.

    2. Disconnect the H20 combination meter connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      H74-11 (TL) - H20-27 (EL) Always Below 1 Ω
      H74-12 (TR) - H20-26 (ER)
      H74-13 (CR) - H20-25 (SW)
      H74-15 (EL) - Body ground
      H74-11 (TL) - Body ground Always 10 kΩ or higher
      H74-12 (TR) - Body ground
      H74-13 (CR) - Body ground
      for RHD
      Tester Connection Condition Specified Condition
      H74-19 (TL) - H20-27 (EL) Always Below 1 Ω
      H74-20 (TR) - H20-26 (ER)
      H74-18 (CR) - H20-25 (SW)
      H74-16 (EL) - Body ground
      H74-19 (TL) - Body ground Always 10 kΩ or higher
      H74-20 (TR) - Body ground
      H74-18 (CR) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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