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

DTC Code DTC Name
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

E220288E03

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

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    NG

  2. INSPECT HEADLIGHT SWIVEL MAIN SWITCH

    1. Remove the headlight swivel main switch.

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    2. E136319C07

      *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

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    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)

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    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR