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 shown 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 on, check that the map is displayed before starting the diagnostic mode. Otherwise, some items cannot be checked.

1. START DIAGNOSTIC MODE 
   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 the "INFO" switch, operate the light control switch: OFF → Turn ON → Turn OFF → Turn ON → Turn OFF → Turn ON → Turn OFF.
      Fig 1: Identifying INFO Switch
      Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
      3. The diagnostic mode starts and the "System Check Mode" screen will be displayed. Service inspection starts automatically and the result will be displayed.
   3. Method 2
      1. Start the engine.
      2. Switch to the "Display Check" screen.
      Fig 2: Diagnostic Tool Display - Display Check Screen
      Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
      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. There are 2 methods to end diagnostic mode. Use one of them.
      1. Turn the ignition switch off.
      2. Press and hold the "DISP" switch for 3 seconds.
3. DIAGNOSIS MENU 
   1. The "Diagnosis MENU" screen will be displayed by pressing the "Menu" switch on the "System Check Mode" screen.
   Fig 3: Diagnostic Tool Display - System Check Mode Screen

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
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 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: Diagnostic Tool Display - System Check Mode And Unit Check Mode Screen

           Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
   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: Diagnostic Tool Display - System Check Mode And LAN Monitor Screen

         Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
      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: Diagnostic Tool Display - LAN Monitor Screen

         Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
5. DTC CLEAR/RECHECK 
   1. Clear DTC
      1. Press the "Code CLR" switch for 3 seconds.
      2. The check results are cleared.
      Fig 7: Diagnostic Tool Display - Code CLR

      Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
   2. Recheck
      1. Press the "Recheck" switch.
         Fig 8: Diagnostic Tool Display - Recheck

         Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
      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: Diagnostic Tool Display - OK

         Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
      3. Press the "LAN Mon" switch to change to the "LAN Monitor" screen.
         Fig 10: Diagnostic Tool Display - LAN Monitor

         Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
      4. Confirm that all diagnostic codes are "No Err". If a code other than "No Err" is displayed, troubleshoot again.
      Fig 11: Diagnostic Tool Display - No Err

      Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.