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DTC Check/Clear

WARNING: This page is about a different car, the 2006 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
  1. DIAGNOSTIC CHECK 
    1. Starting Diagnostic Mode (All elements come on during the SW check mode).
      1. Turn off the audio system and turn the ignition switch to the ACC position. While pressing the preset switches "1" and "6" at the same time, press the "DISC" 3 times.
      2. Reference:
        • When the system enters the Diagnostic Mode, a beep sound is emitted 3 times and all the elements come on during the SW check mode.
          Fig 1: Locating Preset Switches
          G04387517Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • It takes about 40 seconds to complete the check.
        • Turn all the elements in the LCD on.
        • When pressing the switch, confirm a beep sound is emitted.
    2. Service Check Screen.
      1. Press the "SEEK TRACK" switch to enter the "Service Check Screen".
      2. In the service check mode, the system check and the diagnostic memory check are performed, and the check results are displayed in ascending order of the component codes (physical address.)
        DISPLAY RESULT REFERENCE DISPLAY RESULT REFERENCE

        Terms Meaning
        Component code (Physical address) Three-digit code (in hexadecimal) given to each device comprising AVC-LAN. Corresponding to its function, individual symbol is provided.
        Logical address Two-digit code (in hexadecimal) given to each function and device unit in each device comprising AVC-LAN.

        Code No. (physical address) List 

        DETAILED INFORMATION MODE DISPLAYED ITEMS REFERENCE DETAILED INFORMATION MODE DISPLAYED ITEMS REFERENCE

        Code No. (physical address) Equipment name
        190 Radio receiver assembly (Audio head unit).
        440 Stereo component amplifier assembly
    3. Finishing Diagnostic Mode.
      1. Press the "DISC" for 2 seconds or more, or turn the ignition switch off.
    4. Service Check Mode Result Display (for checking the current and the past system conditions).
      1. Press the "SEEK TRACK" switch to see the check result of each component.
        Fig 2: Service Check Mode Result Display
        G04387518Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        HINT:

        • Fig 2 shows the case that the system has 2 components with codes 190 and 360, and one component (code 360) requires a check.
        • The check result is displayed in ascending order of component code. The component device code is displayed first, and then the check result follows.
      2. Check Result Display.
        NOISE CONDITIONS NOISE CONDITIONS

        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 The system recognized the component when it was registered, but the component gives no response to the "Diagnostic Mode ON Request". Check the power source circuit and the communication circuit of the component indicated by the 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 the detailed information mode to check the trouble area referring to the 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 the detailed information mode to check the trouble area referring to the 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 The device gives no response to any one of "System Check Mode ON Request", "System Check Result Request" and "Diagnostic Memory Request". Check the power source circuit and the communication circuit of the component indicated by the component code (physical address).
      3. To perform the Service Check again, press the preset switch "1".
    5. Detailed Information Mode (when displaying the DTC for a troubled 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 3: Display Service Check And Detailed Information Mode
        G04387519Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        HINT:

        • Fig 3 shows the case that the component with code 190 has DTC "47" and "DC" as a result of the system check and the diagnostic memory response.
        • The detailed information mode shows the system check result first, then the diagnostic memory response result follows. (*2): As for the DTCs that do not have any sub code, sub code is not displayed.
      3. Displayed Items in Detailed Information Mode
        ANTENNA TYPE REFERENCE ANTENNA TYPE REFERENCE

        Division Code for DTC display
                 		 Meaning The order of detailed information displayed when the "TUNE UP" switch is pressed. (The order is reversed when the "TUNE 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 referring to the DTC list.
      5. To return to the service check mode, press the preset switch "3".
  2. DTC CLEAR 
    1. Clearing individual DTC memory (when clearing the memory of the DTC detected in the past individually)
      1. Press the preset switch "5" for 2 seconds or more while the "ECHN" is displayed in the service check mode or during the detailed information mode.

        HINT:

        • A beep sound is emitted once when the DTC memory is completely cleared.
        • When the DTC memory is cleared, only the component code (physical address) is displayed for the target component.
        • To check DTCs, press the preset switch "1" and perform the service check again.
    2. Clearing of all the DTC memory (when clearing all the memory of the DTCs detected in the past)
      1. Start the diagnostic mode after repairing the trouble area.
      2. Press the preset switch "5" for 2 seconds or more ("CLR" is displayed at this time).

        HINT:

        • A beep sound is emitted once when the DTC memory is completely cleared.
        • When the DTC memory for all the components is cleared, only the component codes (physical address) are displayed.
      3. Press the preset switch "1" to perform the service check again, and check that no DTCs are displayed for all the component codes (physical address).
    3. Finishing Diagnostic Mode.
      1. Press the "DISC" for 2 seconds or more, or turn the ignition switch off.
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