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Home >> Lexus >> 2008 >> GS 460 >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter >> Meter / Gauge System >> Operating Light Control Rheostat does not Change Light Brightness >> Inspection Procedure

Inspection Procedure

  1. CHECK MULTIPLEX COMMUNICATION SYSTEM 

    Please follow these pages (See HOW TO PROCEED WITH TROUBLESHOOTING ).

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

  2. READ VALUE USING TECHSTREAM (RHEOSTAT UP SW, RHEOSTAT DOWN SW) 
    1. Connect the Techstream to the DLC3.
    2. Ignition switch on (IG).
    3. Turn the tester ON.
    4. Enter following menus: Body Electrical / D-SEAT SW / Data List.
    5. Check the values by referring to the table below.

      D-SEAT SW: 

      TESTER DISPLAY REFERENCE CHART

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Rheostat Up SW Rheostat up switch condition ON: Rheostat up switch is pushed
      OFF: Rheostat up switch is not pressed
      -
      Rheostat Down SW Rheostat down switch condition ON: Rheostat down switch is pushed
      OFF: Rheostat down switch is not pressed
      -

      OK: 

      Switch condition (ON/OFF) can be switched by actual operation. 

    NG : REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY 

    OK : REPLACE COMBINATION METER