DTC Check/Clear

1. There are 2 methods to start diagnostic mode. Start the mode by using one of them.

   HINT:

   • Illustrations may differ from the actual vehicle depending on the device settings and options. Therefore, some detailed areas may not be shown exactly the same as on the actual vehicle.
   • After the ignition switch is turned on, check that the map is displayed before starting the diagnostic mode. Otherwise, some items cannot be checked.
   • Start-up of the diagnostic function for the "audio system and navigation system" is linked with the start-up of the diagnostic function of the "rear display".
2. Method 1 (w/ Navigation system)
   1. Turn the ignition switch to the ON position (Ready).
   2. While pressing and holding the "INFO" switch, operate the 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 "INFO" Switch

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Method 1 (w/o Navigation system)
   1. Turn off the audio system.
   2. Turn the ignition switch to the ACC position.
   3. While pressing the preset switches "1" and "6" at the same time, press the "DISC" 3 times.
   4. 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 2: Identifying Preset Switches

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Method 2 (w/ Navigation system)
   1. Turn the ignition switch to the ON position (Ready).
   2. Switch to the "Display Check" screen.
   3. From the display quality adjustment screen, touch the corners of the screen in the following order: upper left --> lower left --> upper left --> lower left --> upper left --> lower left.
   4. The diagnostic mode starts and the "Service Check" screen will be displayed. Service inspection starts automatically and the result will be displayed.
      Fig 3: Display Quality Adjustment Screen

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. The rear seat entertainment ECU inspects the devices composing the sub AVC-LAN (RSE system).
   Fig 4: Display Diagnosis MENU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Select "Menu" and enter "Diagnosis MENU" using a remote controller.

   HINT:

   • When the diagnosis mode of main AVC-LAN is started, the sub AVC-LAN also enters the diagnosis mode and the diagnosis operation is performed on the rear seat entertainment ECU.
     Fig 5: Identifying Remote Controller

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1. There are 2 methods to end diagnostic mode.
2. Method 1
   1. Turn the ignition switch off.
3. Method 2
   1. Press and hold the "DISP" switch for 3 seconds.

HINT:

• Illustrations may differ from the actual vehicle depending on the device setting and options.

1. Start the service check.
   Fig 6: Selecting Service Check

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Read the system check result.
   1. If the check result is "EXCH", "CHEK" or "Old", touch the display to check its contents and record the data on the customer problem analysis check sheet.

      HINT:

      • If all check result are "OK", go to the communication DTC check.
      • If a device name is not known, its physical address is displayed.
      • If "EXCH", "CHEK" and "Old" as well as "OK" exist, press the service switch to return to the "System Check Mode". Then, check the "Unit Check Mode" screen and record them on the customer problem analysis check sheet.
        Fig 7: Display System Check Mode And Unit Check Mode Screen

        Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Read the communication diagnostic check result.
   1. Return to the "System Check Mode" screen, and press LAN Mon to enter the "LAN monitor" screen.
      Fig 8: Display System Check Mode And LAN Monitor Screen

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. If the check result is "CHEK" or "Old", touch the display to check its contents and record the data on the customer problem analysis check sheet.

      HINT:

      • If all check result are "No Err", the system judges that no DTC exists.
      • The sub-code (relevant device) will be indicated by the original "LAN Monitor" screen, press Service.
      • If check results of other devices are "CHEK," press the "Service" switch to return to the original "LAN Monitor" screen. Then, check the individual communication diagnostic screen for the next device and record the result on the customer problem analysis check sheet.
        Fig 9: Display Check Results

        Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

• Illustrations may differ from the actual vehicle depending on the device setting and options.

1. Start the diagnostic mode.
2. Clear DTC.
   1. Press the "Code CLR" switch for 3 seconds.
   2. DTC is cleared.
      Fig 10: Pressing Code CLR Switch

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Recheck DTC.
   1. Press the "Recheck" switch.
      Fig 11: Pressing Recheck Switch

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4. Confirm that all diagnostic codes are "OK" when the check results are displayed. If a code other than "OK" is displayed, troubleshooting again.
   Fig 12: Display Diagnostic Codes Are OK

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Press the "LAN Mon" switch to change to "LAN Monitor" mode.
6. Confirm that all diagnostic codes are "No Err". If a code other than "No Err" is displayed, troubleshoot again.
   Fig 13: Display No Err

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002