ADAPTIVE HIGH BEAM SYSTEM Adaptive High Beam Switch Circuit

DESCRIPTION

The headlight ECU sub-assembly LH detects the ON/OFF signal of the combination switch assembly (adaptive high beam switch).

WIRING DIAGRAM

B002IE9E40

CAUTION / NOTICE / HINT

Note

If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.

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PROCEDURE


  1. READ VALUE USING GTS


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

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      Body Electrical > AFS > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      AHS Switch Combination switch assembly (adaptive high beam switch) signal ON or OFF

      ON: Combination switch assembly (adaptive high beam switch) is operated

      OFF: Combination switch assembly (adaptive high beam switch) is not operated

      		 -

      Body Electrical > AFS > Data List
      Tester Display
      AHS 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 COMBINATION SWITCH ASSEMBLY (ADAPTIVE HIGH BEAM SWITCH)


    1. Remove the combination switch assembly (adaptive high beam switch).

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    2. Inspect the combination switch assembly (adaptive high beam switch).

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      Result
      Proceed to
      OK
      NG

    NG

    REPLACE COMBINATION SWITCH ASSEMBLY (ADAPTIVE HIGH BEAM SWITCH) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (COMBINATION SWITCH ASSEMBLY [ADAPTIVE HIGH BEAM SWITCH] - HEADLIGHT ECU SUB-ASSEMBLY LH AND BODY GROUND)


    1. Disconnect the I33 combination switch assembly (adaptive high beam switch) connector.

    2. Disconnect the A19 headlight ECU sub-assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I33-1 (+B) - A19-6 (AZSW) Always Below 1 Ω
      I33-10 (E) - Body ground Always Below 1 Ω
      I33-1 (+B) or A19-6 (AZSW) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR