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Home >> Lexus >> 2002 >> SC 430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 235 (LEXUS Navigation System - Diagnosis) >> Display Does Not Dim (Night Screen) With Tail Switch On >> Inspection Procedure
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Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK IMAGE QUALITY SETTING 
    Fig 1: Checking Image Quality Setting
    G01441399Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Enter the option screen by pressing the "OPTION" switch.
    2. Enter the display adjustment screen by pressing the "DISPLAY" switch.
    3. Turn the light control switch to TAIL.
    4. Check if "DAY MODE" on the display adjustment is ON. OK: "DAY MODE" is ON.

    OK: 

    TURN FORCED "DAY MODE" SETTING OFF 

    NG: Go to next step. 

  2. DISPLAY CHECK MODE (VEHICLE SIGNAL CHECK MODE) 
    1. Enter the "Display Check" mode (Vehicle Signal Check Mode) (see DISPLAY CHECK MODE (VEHICLE SIGNAL CHECK) ).
      Fig 2: Tail Switch Operation Chart
      G01441400Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the light control switch TAIL or ON and OFF.

      Standard: 

      Fig 3: Identifying Multi-Display - Vehicle Signal Check Mode
      G01441401Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The display is updated once per second. As a result, it is normal for the display to lag behind the actual change in the switch.

    OK: 

    REPLACE MULTI-DISPLAY (SEE  REPLACEMENT  ) 

    NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (SEE  PROBLEM SYMPTOMS TABLE  )