System Check Mode (DTC Check)

HINT:

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

1. Start the diagnostic mode (see DIAGNOSTIC START-UP/FINISH  ).
2. Read the system check result.
   1. Press the "SEEK TRACK" switch to see the check result of each component.
   2. The component device code (physical address) is displayed first, and then the check result follows.

      HINT:

      If all check results are "good", the system determines that no DTC exists.

      Fig 1: Result Mode Display

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Check result display
      RESULT DISPLAY MEANING
      
      

      Display	Original Language	Meaning	Action to be taken
      good	Good (normal)	No DTCs are detected in both "System Check Mode" and "Diagnostic Memory Mode".	-
      nCon	No connection	System recognized component when it was registered, but component gives no response to "Diagnostic Mode ON Request".	Check power source circuit and communication circuit of component indicated by component code (physical address).
      ECHn	Exchange	One or more DTCs for "Exchange" are detected in either "System Check Mode" or "Diagnostic Memory Mode".	Go to detailed information mode to check trouble area on DTC list.
      CHEC	Check	When no DTCs are detected for "Exchange", one or more DTCs for "Check" are detected in either "System Check Mode" or "Diagnostic Memory Mode".	Go to detailed information mode to check trouble area on DTC list.
      Old	Old version	Old DTC application is identified and DTC is detected in either "System Check Mode" or "Diagnostic Memory Mode".	-
      nrES	No response	Device gives no response to "System Check Mode ON Request", "System Check Result Request" or "Diagnostic Memory Request".	Check power source circuit and communication circuit of component indicated by component code (physical address).

   4. To perform the service check again, press the preset switch "1".
3. Detailed information mode (when displaying the DTC for a trouble component)
   1. With "CHEC" or "ECHn" being displayed, press the preset switch "2" to go to the detailed information mode.
   2. Press the "SEEK TRACK" switch to display the "System Check Result (SYS)" and "Diagnostic Memory Response (CODE)".
      Fig 2: Service Check Mode Display

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Displayed items in detailed information mode
      DISPLAYED ITEMS IN DETAILED INFORMATION MODE
      
      

      Division Code for DTC Display	Meaning	The order of detailed information displayed when the "SEEK TRACK UP" switch is pressed (the order is reversed when the "SEEK TRACK DOWN" switch is pressed)
      SyS	System check result is displayed.	Logical address --> DTC
      COdE	Diagnostic memory check result is displayed.	Logical address --> DTC --> Sub code --> Connection confirmation number --> The number of times of occurrence

   4. Check the trouble area on the DTC list.
   5. To return to the service check mode, press the preset switch "3".