System Check Mode (DTC Check)

HINT:

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

CHECK DTC
1. Start the diagnostic mode (see DIAGNOSTIC START-UP/FINISH ).
2. Read the system check result.
  1. If all check results of devices are "EXCH," "CHEK" or "Old," touch the display to check the contents on the "Unit Check Mode" screen and record the data on the customer problem analysis check sheet.
    HINT:
    - If all check results are "OK," go to the communication DTC check (go to step c).
    - If a device name is not known, its physical address is displayed.
      
      Fig 1: Identifying System Unit Check Mode Display Screen
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    HINT:
    
    If "EXCH", "CHEK", "Old" and "OK" exist, press the service switch to return to the "System Check Mode". Then, check the "Unit Check Mode" screen and record the data on the customer problem analysis check sheet.
    
    Fig 2: Identifying System Check Mode Display Screen
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Read the communication diagnostic check result.
  1. Return to the "System Check Mode", and press "LAN Mon" switch to enter the LAN monitor screen.
    
    Fig 3: Reading Communication Diagnostic Check Result (1 Of 3)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. If the result is "CHEK" or "Old," touch the result switch to check the contents on the individual communication diagnostic screen and record the data on the customer problem analysis check sheet.
    HINT:
    - If all check results are "NoErr," the system judges that no DTC exists.
    - The sub-code (relevant device) will be indicated by its physical address.
      
      Fig 4: Reading Communication Diagnostic Check Result (2 Of 3)
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    HINT:
    
    If check results of devices are "CHEK," press the "Service" switch to return to the original "LAN Monitor" screen. Then, check the individual communication diagnostic screen for the next device and record the data on the customer problem analysis check sheet.
    
    Fig 5: Reading Communication Diagnostic Check Result (3 Of 3)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002