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Home >> Lexus >> 2010 >> IS 250C Standard >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Lighting (Exterior) (Diagnostic Codes & Circuit Tests) >> Lighting System >> AFS OFF Switch Circuit >> Procedure

AFS OFF Switch Circuit: Procedure

  1. CHECK MULTIPLEX COMMUNICATION SYSTEM 

    Refer to How to Proceed with Troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING .

    If the multiplex communication system is operating normally, proceed to the next step.

    NEXT: Go to next step 

  2. PERFORM ACTIVE TEST USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Combination Meter / Active Test.
    5. Check the operation.
      COMBINATION METER

      Tester Display Test Part Control Range Diagnostic Note
      Indicat. AFS AFS ON/OFF indicator light ON/OFF -

      OK

      AFS ON/OFF indicator comes on.

    NG → See step   6 

    OK: Go to next step 

  3. READ VALUE USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Turn the clearance sonar main switch on.
    5. Enter the following menus: Body Electrical / AFS / Data List.
    6. Read the display on the Techstream.
      AFS (AFS ECU)

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      AFS OFF Switch AFS setting / ON or OFF ON: AFS ON
      OFF: AFS OFF
      -

      OK

      Normal conditions listed above are displayed.

    NG → See step   4 

    OK → See step   7 

  4. CHECK SATELLITE SWITCH 
    1. By using the satellite switch (RH switch, ON/OFF switch, LH switch), check the AFS ON/OFF indicator comes on. Refer to SYSTEM DESCRIPTION .

      OK

      AFS ON/OFF indicator comes on.

    NG → See step   6 

    OK → See step   5 

  5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE 
  6. GO TO COMBINATION METER SYSTEM. Refer to  PROBLEM SYMPTOMS TABLE 
  7. REPLACE AFS ECU. Refer to  COMPONENTS