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Diagnostic Start-Up/Finish

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.

HINT:

  1. There are 2 methods to start diagnostic mode. Start the mode by using one of them. 
  2. Method 1 
    1. Start the engine.
    2. While pressing and holding "OPTION" switch, operate light control switch, OFF --> Turn ON --> Turn OFF --> Turn ON --> Turn OFF --> Turn ON --> Turn OFF.
    3. The diagnostic mode starts and the service check screen ("System Check Mode") will be displayed. Service inspection starts automatically and the result will be displayed.
    Fig 1: Identifying Display
    G01441360Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Method 2 
    1. Start the engine.
    2. Switch to the "Display Check" screen.
    3. From the display adjustment screen, touch the corners of the screen in the following order: upper left --> lower I --> upper left --> lower left --> upper left --> lower left.
    4. The diagnostic mode starts and "Service Check" screen will be displayed. Service inspection starts automatically and the result will be displayed.
    Fig 2: Identifying Multi-Display - Display Check
    G01441361Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. Diagnosis MENU 
  5. Diagnostic screen will be displayed by pressing the menu switch on the service check screen.
    Fig 3: Identifying Multi-Display - Diagnosis Menu
    G01441362Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. There is a method to exit. 
    1. Turn the ignition switch off.