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.
• for Navigation System (for HDD):

  If the system cannot enter the diagnostic mode, inspect all AVC-LAN communication components and repair or replace problem parts (see HOW TO PROCEED WITH TROUBLESHOOTING ).

• After the engine switch is turned on (IG), check that the map is displayed before starting the diagnostic mode. Otherwise, some items cannot be checked.

1. CHECK DTC (WITH TECHSTREAM) 
   1. Connect the Techstream to the DLC3.
   2. Start the engine.
   3. Turn the Techstream on.
   4. Enter the following menus: Chassis/Advanced Parking Guidance System/Trouble Codes.
   5. Check for DTCs.
2. CLEAR DTC (WITH TECHSTREAM) 
   1. Connect the Techstream to the DLC3.
   2. Start the engine.
   3. Turn the Techstream on.
   4. Enter the following menus: Chassis/Advanced Parking Guidance System/Trouble Codes.
   5. Clear the DTCs.
3. START DIAGNOSTIC MODE 
   1. Start the engine.
   2. Switch to the "Display Check" screen.
      Fig 1: Locating DISP Button

      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.
4. FINISH DIAGNOSTIC MODE 
   1. Turn the engine switch off.
   Fig 2: Display - Quality Adjustment Screen

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5. DIAGNOSIS MENU 
   1. Press the "MENU" switch on the "System Check Mode" screen.
      Fig 3: Display - System Check Mode Screen

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   2. The "Diagnosis MENU" screen will be displayed.
   Fig 4: Display - Diagnosis MENU Screen

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6. CHECK DTC (WITH DIAGNOSTIC MODE) 
   1. Read the system check result.
      1. If the check result is "EXCH", "CHEK" or "Old", touch the displayed check result.
         Fig 5: Display - System Check Mode Screen

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. View the results on the "Unit Check Mode" screen and record them.
         Fig 6: Display - Unit Check Mode Screen

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      3. When proceeding to view the results of another device, press the "Service" switch.
         Fig 7: Display - Unit Check Mode Screen

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      4. Return to the "System Check Mode" screen. Repeat this step.
         Fig 8: Display - System Check Mode Screen

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   2. Read the communication diagnostic check result.
      1. Return to the "System Check Mode" screen, and press the "LAN Mon" switch.
         Fig 9: Locating LAN Mon Switch

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      2. The "LAN Monitor" screen is displayed.
         Fig 10: Display - LAN Monitor Screen

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      3. If the check result is "CHEK" or "Old", touch the displayed check result.
         Fig 11: Display - Check Result

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      4. 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.
           Fig 12: Display - LAN Monitor Screen

           Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
         • When proceeding to view the results of another device, press the "LAN Monitor" switch to return to the original "LAN Monitor" screen. Repeat this step.
         Fig 13: Display - LAN Monitor Screen

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7. DTC CLEAR/RECHECK (WITH DIAGNOSTIC MENU) 
   1. Clear DTC
      1. Press the "Code CLR" switch for 3 seconds.
      2. The check results are cleared.
      Fig 14: Locating Code CLR Switch On System Check Mode Screen

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Recheck
      1. Press the "Recheck" switch.
         Fig 15: Locating Recheck Switch On System Check Mode Screen

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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 16: Locating CHEK And OK On System Check Mode Screen

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Press the "LAN Mon" switch to change to "LAN Monitor" mode.
         Fig 17: Locating CHEK And OK On System Check Mode Screen

         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.
      Fig 18: Display - LAN Monitor Screen

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