DTC Check / Clear

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Navigation System / Trouble Codes.
5. Check for DTC(s) and then write them down.
6. Check the details of the DTC(s). Refer to DIAGNOSTIC TROUBLE CODE CHART .

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Navigation System / Trouble Codes.
5. Clear DTCs.

HINT: 

• Illustrations may differ from the actual vehicle screen depending on the device settings and options. Therefore, some detailed areas may not be shown exactly the same as on the actual vehicle screen.
• To help find the malfunction when the system can not change to diagnostic mode, check for DTCs using the Techstream.
• After the engine switch is turned on (IG), check that the map is displayed before starting diagnostic mode. Otherwise, some items cannot be checked.

1. There are 2 methods to start diagnostic mode. Start the mode by using one of them.
2. Method 1
   Fig 1: Identifying INFO switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   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.
   3. The diagnostic mode starts and the "System Check Mode" screen will be displayed.
      TEXT IN ILLUSTRATION
      
      

      *a	"INFO" Switch

3. Method 2
   1. Start the engine.
   2. Press the "DISP" switch.
      Fig 2: Identifying DISP Switch

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      TEXT IN ILLUSTRATION
      
      

      *a	"DISP" Switch

   3. From the display quality adjustment screen, touch the upper and lower left corners of the screen in the following order: Upper left → Lower left → Upper left → Lower left → Upper left → Lower left.
      Fig 3: Identifying Display Quality Adjustment Screen

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   4. Diagnostic mode starts and the "System Check Mode" screen will be displayed. Service inspection starts automatically and the result will be displayed.
      TEXT IN ILLUSTRATION
      
      

      *a	Upper Left
      *b	Lower Left

1. The "Failure Diagnosis" screen is displayed when the "Failure Diagnosis" switch on the "Service Menu" screen is selected.
   Fig 4: Identifying Failure Diagnosis Screen

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1. The "System Check Mode" screen is displayed when the "System Check" switch on the "Failure Diagnosis" screen is selected.
   Fig 5: Identifying System Check Screen

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HINT: 

Refer to Diagnosis Display Detailed Description for further details on the "System Check Mode" screen. Refer to SYSTEM DESCRIPTION .

1. Read the system check result.
   Fig 6: Identifying System Check Result

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   1. When the result is "EXCH" or "CHEK", select the icon which displays the result, and check and record each DTC displayed on the "Unit Check Mode" screen.
      NOTE:

      A maximum of 6 DTCs can be displayed by the display and navigation module display. When more than 6 DTCs are expected, check DTCs using the Techstream.

      HINT: 

      • Refer to Diagnosis Display Detailed Description for further details on the "System Check Mode" screen. Refer to SYSTEM DESCRIPTION .
      • When all results are "OK", this means that no DTCs are present.
      • When "MOST" is displayed for the result, selecting "MOST" displays the "MOST Line Check" screen and performs the MOST line check.
      • Changing to the "MOST Line Check" screen is possible only when the MOST network is malfunctioning and "MOST" is displayed for the result.
      • If the MOST network had a malfunction in the past, the DTCs will be displayed in the Memory column.
      • Refer to Diagnosis Display Detailed Description for further details on the "MOST Line Check" screen. Refer to SYSTEM DESCRIPTION .
      • When "NCON" is displayed for all devices connected using the AVC-LAN, or when all device names are not displayed, check if there is a short circuit in the AVC-LAN or devices connected to the AVC-LAN. Repair or replace parts as necessary. Refer to AVC-LAN Circuit .
      • When proceeding to view the results of another device, press the "Back" switch to return to the "System Check Mode" screen. Repeat the step above to view the results of other devices.
   2. Check the details of the DTC(s). Refer to DIAGNOSTIC TROUBLE CODE CHART .
      TEXT IN ILLUSTRATION
      
      

      *a	Example
      *b	Diagnostic Code

1. Clear DTC
   Fig 7: Identifying MemorCLR Switch

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   1. Press the "Memory CLR" switch for 3 seconds.
   2. The check results are cleared.

      HINT: 

      • To clear the DTC for a specific device, clear the DTC using the "Unit Check Mode" screen.
      • When clearing a DTC using the "Unit Check Mode" screen, press the "Code CLR" switch for 3 seconds.
2. Recheck
   Fig 8: Identifying Recheck Switch

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   1. Press the "Recheck" switch.
   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 Check Results

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      When a DTC was cleared using the "Unit Check Mode" screen, press the "Back" switch to return to the "System Check Mode" screen and perform this operation.

1. Turn the engine switch off.