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AUDIO AND VISUAL SYSTEM (for Radio Receiver Type) DTC CHECK / CLEAR

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Tip:

If the system cannot enter the diagnostic mode, inspect the AVC-LAN and all the components that are connected to the AVC-LAN for short circuits and repair or replace the malfunctioning part (Click here).


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  1. STARTING DIAGNOSTIC MODE


    1. A01IU2QE01

      Turn the ignition switch to ACC.

      Table 1. Text in Illustration
      *1 DISC-AUX
      *2 Seek Track
      *3 Channel 1
      *4 Channel 6

    2. Turn off the audio system.

    3. While pressing the preset switches "channel 1" and "channel 6" at the same time, press the "AUX" switch 3 times.

      Tip:

      • A beep is emitted 3 times and the diagnostic function is activated. The system enters the all element illumination mode and the switch check mode.

      • The layout of the switches in the illustration is only an example and may differ depending on the vehicle.

  2. ALL ELEMENT ILLUMINATION MODE AND SWITCH CHECK MODE

    Tip:

    The illumination status of all switches and operations of the panel switches can be checked.


    1. A01IP0TE01

      Check that all elements are on.

      Table 2. Text in Illustration
      *1 Example

    2. When pressing each panel switch, check that a beep is emitted.

      Note:

      Pressing the "SEEK TRACK UP" switch transfers the screen to the stereo jack adapter connection check screen. Check the operation of this switch by confirming the transfer of the screen.

  3. STEREO JACK ADAPTER CONNECTION CHECK MODE


    1. A01IPUKE14

      Press the "SEEK TRACK UP" switch.

      Table 3. Text in Illustration
      *1 When a stereo jack adapter is connected
      *2 When a stereo jack adapter is not connected

    2. Check if the stereo jack adapter is recognized.

      Tip:

      • The radio receiver displays "AUX OK" or "AUX ON" when it recognizes a connection to the stereo jack adapter.

      • Vehicles that do not have a stereo jack adapter also have this function.

      • This function is not to check connection status to an external device, but to check recognition of the stereo jack adapter.

  4. SERVICE CHECK MODE


    1. Press the "SEEK TRACK UP" switch.

      Tip:

      For details of the service check mode, refer to "Check DTC" and "DTC Clear/Recheck".

  5. FINISHING DIAGNOSTIC MODE


    1. Press the "AUX" switch for 2 seconds or more, or turn the ignition switch off.

  6. CHECK DTC

    Tip:

    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.


    1. Reference:

      In the system check mode, the system check and the diagnostic memory check are performed, and the check results are displayed in ascending order by component code (physical address).

      Term 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 of each device comprising AVC-LAN.

    2. Service check result display

      Display Original word Meaning Action to be Taken
      good Good (normal) No DTCs are stored 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 "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 on the DTC chart.
      CHEC Check When no DTCs are stored for "Exchange", one or more DTCs for "Check" are stored in either "System Check Mode" or "Diagnostic Memory Mode". Go to the detailed information mode to check the trouble area on the DTC chart.
      OLd Old version Old DTC application is identified and one or more DTCs are stored 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. Device name and physical address

      Physical Address No. Name
      190 Radio receiver assembly
      388 Multi-media interface ECU

    4. Service check mode


      1. Press the "SEEK TRACK" switch to see the check result of each component.

      2. A01IU3EE04

        The component code (physical address) is displayed first, and then the check result follows.

        Tip:

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


        • If the preset switch "channel 1" is pressed in the service check mode, service check is performed again.


        • This illustration is only an example and may differ in cases such as those in which optional parts are present or different DTCs are output.

    5. Detailed information mode 1

      Tip:

      • "Detailed Information Mode 1" is displayed when there is no response to "System Check Result Request" and DTC is stored only in "Diagnostic Memory Request".


      • The component device code (physical address) is displayed first, and then the check result follows.


      • This illustration is only an example and may differ in cases such as those in which optional parts are present or different DTCs are output.


      1. Press the preset switch "channel 2" to go to the "Detailed Information Mode 1".

      2. Press the "SEEK TRACK" switch to display the physical address and DTC of the component.

      3. Press the preset switch "channel 3" to go to the "Service Check Mode".

      4. A01INI9E08

        It is necessary to distinguish between the displays of the responses to "System Check Result Request" and "Diagnostic Memory Request". In order to distinguish between the information detected in "System Check Mode" and "Diagnostic Memory Mode" in "ECHn", "CHEC", and "OLd" in "Detailed Information Mode 1", refer to the following:


        • "SyS" is displayed before the detailed codes (detected as a result of "System Check Result Request") are displayed.


        • "COdE" is displayed before the detailed codes (detected as a result of "Diagnostic Memory Request") are displayed.

        Tip:

        • The response to "System Check Result Request" is the current information given from each ECU as a result of the system check.


        • The response to "Diagnostic Memory Request" contains the information received from each ECU or stored in each ECU in the past.


        • The response to "Diagnostic Memory Request" is the DTCs output as a result of the diagnostic memory check or the DTCs received from each ECU.


        • "System Check Result Request (SyS)" is displayed first, and then the logical address and DTC appear in order.


        • "Diagnostic Memory Request (COdE)" is displayed first, and then the logical address, DTC, sub-code, connection check number, and the number of occurrences appear in order.

    6. Detailed information mode 2

      Tip:

      • "Detailed Information Mode 2" is displayed when DTCs are stored in the responses to both "System Check Result Request" and "Diagnostic Memory Request".


      • The component device code (physical address) is displayed first, and then the check result follows.


      • This illustration is only an example and may differ in cases such as those in which optional parts are present or different DTCs are output.


      1. Press the preset switch "channel 2" to go to the "Detailed Information Mode 2".

      2. Press the "SEEK TRACK" switch to display the physical address and DTC of the component.

      3. Press the preset switch "channel 3" to go to the "Service Check Mode".

      4. A01IUBRE32

        It is necessary to distinguish between the displays of the responses to "System Check Result Request" and "Diagnostic Memory Request". In order to distinguish between the information detected in "System Check Mode" and "Diagnostic Memory Mode" in "ECHn", "CHEC", and "OLd" in "Detailed Information Mode 2", refer to the following:


        • "SyS" is displayed before the detailed codes (detected as a result of "System Check Result Request") are displayed.


        • "COdE" is displayed before the detailed codes (detected as a result of "Diagnostic Memory Request") are displayed.

        Tip:

        • The response to "System Check Result Request" is the current information given from each ECU as a result of the system check.


        • The response to "Diagnostic Memory Request" contains the information received from each ECU or stored in each ECU in the past.


        • The response to "Diagnostic Memory Request" is the DTCs output as a result of the diagnostic memory check or the DTCs received from each ECU.


        • "System Check Result Request (SyS)" is displayed first, and then the logical address and DTC appear in order.


        • "Diagnostic Memory Request (COdE)" is displayed first, and then the logical address, DTC, sub-code, connection check number, and the number of occurrences appear in order.

  7. DTC CLEAR/RECHECK


    1. A01IU2QE01

      Clearing All DTC Memory (when clearing all the memory of the DTCs previously detected)

      Tip:

      The layout of the switches in the illustration is only an example and may differ depending on the vehicle.

      Table 4. Text in Illustration
      *1 DISC-AUX
      *2 Seek Track
      *3 Channel 1
      *4 Channel 6

      1. When the preset switch "channel 6" is pressed for 2 seconds or more during "Service Check Mode", the DTCs for all components are cleared ("CLr" is displayed at this time).

        Tip:

        • A beep 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 addresses) are displayed.


        • After the DTC memory is cleared, the "Service Check Mode" is restored.

    2. Clearing Individual DTC Memory (when clearing the memory of the DTC previously detected individually)


      1. When the preset switch "channel 6" is pressed for 2 seconds or more during "Detailed Information Mode 1" or "Detailed Information Mode 2", the DTCs for the target component are cleared.

        Tip:

        • A beep 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.


        • After the DTC memory is cleared, the "Service Check Mode" is restored.


        • To check DTCs, press the preset switch "channel 1" and perform the system check again.

    3. Press the preset switch "channel 1" to perform the service check again, and check that no DTCs are displayed for all the component codes (physical addresses).