DTC Check/Clear

HINT:

• Illustrations may differ from the actual vehicle depending on the device settings and options. Therefore, some detailed areas may not be exactly the same as on the actual vehicle.
• If the system cannot enter the diagnostic mode, inspect all AVC-LAN communication components and repair or replace problem parts (See AVC-LAN CIRCUIT  ).
• After the ignition switch is turned to ON, check that the map is displayed before starting the diagnostic mode. Otherwise, some items cannot be checked.

1. START DIAGNOSTIC MODE 
   1. Turn the ignition switch to ACC.
   2. Press the "DISP" switch.
      Fig 1: Locating DISP Switch

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   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 "System Check Mode" screen will be displayed. Service inspection starts automatically and the result will be displayed.
2. FINISH DIAGNOSTIC MODE 
   1. Turn the ignition switch off.
      Fig 2: Identifying Display Quality Adjustment Screen

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3. DIAGNOSIS MENU 
   1. The "Diagnosis MENU" screen will be displayed by pressing the "Menu" switch on the "System Check Mode" screen.
      Fig 3: Identifying System Check Mode Screen - Diagnosis MENU

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. CHECK DTC 
   1. Read the system check result.
      1. If the check result is "EXCH", "CHEK" or "Old", touch the displayed check result to view the results on the "Unit Check Mode" screen and record them.

         HINT:

         • If all check results are "OK", go to the communication DTC check .
         • If a device name is not known, its physical address is displayed.

         HINT:

         When proceeding to view the results of another device, press the "Service" switch to return to the "System Check Mode" screen. Repeat this step.

         Fig 4: Identifying System Check Result

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Read the communication diagnostic check result.
      1. Return to the "System Check Mode" screen, and press the "LAN Mon" switch to enter the "LAN Monitor" screen.
         Fig 5: Identifying Communication Diagnostic Check Result

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. If the check result is "CHEK" or "Old", touch the displayed check result to view the results on the individual communication diagnostic screen and record them.

         HINT:

         • If all check results are "No Err", the system judges that no DTC exists.
         • The sub-code (relevant device) will be indicated by its physical address.
         • When proceeding to view the results of another device, press the "Service" switch to return to the original "LAN Monitor" screen. Repeat this step.
           Fig 6: Identifying Individual Communication Diagnostic Screen

           Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. DTC CLEAR/RECHECK 
   1. Clear DTC
      1. Press the "Code CLR" switch for 3 seconds.
      2. The check results are cleared.
         Fig 7: Locating Code CLR Switch

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Recheck DTC
      1. Press the "Recheck" switch.
         Fig 8: Locating Recheck Switch

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      2. Confirm that all diagnostic codes are "OK" when the check results are displayed. If a code other than "OK" is displayed, troubleshoot again.
         Fig 9: Identifying Diagnostic Codes - OK

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Press the "LAN Mon" switch to change to the "LAN Monitor" screen.
         Fig 10: Locating LAN Mon Switch

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Confirm that all diagnostic codes are "No Err". If a code other than "No Err" is displayed, troubleshoot again.