AFS (ADAPTIVE FRONT-LIGHTING SYSTEM) AFS OFF Switch Circuit

DESCRIPTION

When the headlight swivel main switch is pushed (ON), the AFS ECU (headlight swivel ECU assembly) will cancel the intelligent AFS control and turn on the AFS OFF indicator light.

WIRING DIAGRAM

A012IYQE03

CAUTION / NOTICE / HINT

Note

If the AFS ECU (headlight swivel ECU assembly) has been replaced, it is necessary to synchronize the vehicle information and initialize the AFS ECU (headlight swivel ECU assembly).

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PROCEDURE


  1. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

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

    5. Read the display on the GTS.


      Body Electrical > AFS > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      AFS OFF Switch Headlight swivel main switch signal ON or OFF

      ON: Headlight swivel main switch pushed

      OFF: Headlight swivel main switch not pushed

      		 -

      Body Electrical > AFS > Data List
      Tester Display
      AFS OFF Switch
      OK
      Normal condition listed above is displayed.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. INSPECT HEADLIGHT SWIVEL MAIN SWITCH


    1. Remove the headlight swivel main switch.

      Click here

    2. A012H4FC07
      *a

      Component without harness connected

      (Headlight Swivel Main Switch)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      4 (MSW) - 1 (E) Not pushed (OFF) 10 kΩ or higher
      Pushed (ON) Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HEADLIGHT SWIVEL MAIN SWITCH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (HEADLIGHT SWIVEL MAIN SWITCH - AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) AND BODY GROUND)


    1. Disconnect the A93 AFS ECU (headlight swivel ECU assembly) connector.

    2. Disconnect the E26 headlight swivel main switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A93-32 (MSW) - E26-4 (MSW) Always Below 1 Ω
      A93-32 (MSW) - Body ground Always 10 kΩ or higher
      E26-1 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR