AUTOMATIC HIGH BEAM SYSTEM Automatic High Beam Switch Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) detects auto high beam switch signals. The automatic high beam system can be turned on and off by operating the integration control and panel assembly (automatic high beam switch).

WIRING DIAGRAM

A01VXU4E12

CAUTION / NOTICE / HINT

Note


  • Before replacing the main body ECU (multiplex network body ECU), refer to refer to Service Bulletin.

  • The vehicle battery supplies power to the main body ECU (multiplex network body ECU) via the door control battery. Therefore, before proceeding with troubleshooting, perform an on-vehicle inspection and confirm that the main body ECU (multiplex network body ECU) power source circuit is normal.*

    Click here


    • *: w/o Canister Pump Module with Door Ajar Warning Buzzer Function

PROCEDURE


  1. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Main Body / Data List.

    5. Read the Data List according to the display on the GTS.


      Body Electrical > Main Body > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Auto High Beam Main Switch Integration control and panel assembly (automatic high beam switch) signal ON or OFF

      ON: Integration control and panel assembly (automatic high beam switch) pressed

      OFF: Integration control and panel assembly (automatic high beam switch) not pressed

      		 -

      Body Electrical > Main Body > Data List
      Tester Display
      Auto High Beam Main Switch
      OK
      Normal conditions listed above are displayed.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY (AUTOMATIC HIGH BEAM SWITCH)


    1. Remove the integration control and panel assembly (automatic high beam switch).

      Click here

    2. Inspect the integration control and panel assembly (automatic high beam switch).

      Click here

      OK
      Integration control and panel assembly (automatic high beam switch) is normal.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY (AUTOMATIC HIGH BEAM SWITCH) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)


    1. Disconnect the J9 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J83-1 (+B) - J9-23 (AHBI) Always Below 1 Ω
      J83-1 (+B) or J9-23 (AHBI) - Body ground Always 10 kΩ or higher
      J83-10 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR