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DTC Check / Clear [08/2012 - ]

  1. CHECK DTC (CHECK USING TECHSTREAM) 
    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 DTCs, and then write them down.
    6. Check the details of the DTC(s). Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2012 - ] .
  2. CLEAR DTC (CLEAR USING TECHSTREAM) 
    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 the DTCs.
  3. START DIAGNOSTIC MODE 

    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.
    • If the system cannot enter diagnostic mode, inspect all AVC-LAN communication components and repair or replace problem parts. Refer to AVC-LAN Circuit .
    • 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. Turn the engine switch on (IG).
    2. While pressing and holding the "INFO" switch, operate the light control switch: Off → Tail → Off → Tail → Off → Tail → Off.
    3. Diagnostic mode starts and the "Service Menu" screen will be displayed. Service inspection starts automatically and the result will be displayed.
  4. FAILURE DIAGNOSIS 
    1. The "Failure Diagnosis" screen will be displayed by pressing the "Failure Diagnosis" switch on the "Service Menu" screen.
      Fig 1: Screen Display - Failure Diagnosis
      GTY316013Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. SYSTEM CHECK 
    1. The "System Check Mode" screen will be displayed by pressing the "System Check" switch on the "Failure Diagnosis" screen.
      Fig 2: Screen Display - System Check
      GTY407734Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. CHECK DTC (CHECK USING SYSTEM CHECK MODE SCREEN) 
    1. System check mode screen description
      Fig 3: Screen Display - System Check Mode
      GTY420230Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      SCREEN DESCRIPTION

      Display Content
      *a: Node position number for devices connected to the MOST network. MOST network node position numbers are provided for devices connected to the MOST network.
      *b: Device Name List No. 1
      • Device Name List No. 1 displays some of the devices that make up the navigation system.
      • The names of the components from Device Name List No. 1 are shown in the following table.
      *c: Check Result
      • Result codes for all devices are displayed.
      • When "MOST" is displayed for the result, press "MOST" on the multi-display assembly to display the "MOST Line Check" screen.
      *d: Memory Clear
      • Present and history DTCs and registered connected device names are cleared.
      • Press the "Memory CLR" switch for 3 seconds.
      *e: Recheck
      • A system check will be performed again after the memory is cleared.
      • The "Recheck" switch will dim during a system check.
      *f: Device Name List No. 2
      • Device Name List No. 2 displays some of the devices that make up the navigation system.
      • The names of the components from Device Name List No. 2 are shown in the following table.
      *B: DEVICE NAME LIST NO. 1 DESCRIPTION

      Name Component Connection Method
      EMV-M Multi-media module receiver assembly -
      AMP Stereo component amplifier assembly Communication line for MOST network
      DISP Multi-display assembly Communication line for AVC-LAN
      G/W Network gateway ECU Communication line for AVC-LAN
      *C: CHECK RESULT DESCRIPTION

      Result Meaning Action
      OK The device does not respond with a DTC. -
      MOST MOST communication error Perform "MOST Line Check" to check the connection of each device on the MOST network.
      DETAIL The device responds with a DTC. Look up the DTC in "Unit Check Mode".
      NCON The device was previously present, but does not respond in diagnostic mode. - Check power supply wire harness of the device.
      - Check the AVC-LAN or MOST network of the device.
      NRES The device responds in diagnostic mode, but gives no DTC information. - Check power supply wire harness of the device.
      - Check the AVC-LAN or MOST network of the device.
      *F: DEVICE NAME LIST NO. 2 DESCRIPTION

      Name Component Connection Method
      AUX No. 1 stereo jack adapter assembly Vehicle wire harness
      DCM DCM (Telematics Transceiver)*1 Communication line for USB
      • *1: w/ Manual (SOS) Switch
    2. Unit check mode screen description
      Fig 4: Screen Display - Unit Check Mode
      GTY396487Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      SCREEN DESCRIPTION

      Display Content
      *a: Device name Target device
      *b: History DTC Diagnostic memory results and stored DTCs are displayed.
      *c: Current DTC DTCs output in the service check are displayed.
      *d: DTC DTC (Diagnostic Trouble Code)
      *e: Timestamp The time and date of history DTCs are displayed. (The year is displayed in 2-digit format.)
      *f: Diagnosis clear switch Pushing this switch for 3 seconds clears the diagnostic memory data of the target device. (Both response to diagnostic system check result and the displayed data are cleared.)

      HINT: 

      • This screen is updated once per second.
      • A maximum of 6 DTCs can be displayed for history and present DTCs.
    3. MOST line check screen description

      HINT: 

      • The inspection will be performed at the time the screen changes from "System Check Mode" to "MOST Line Check".
      • The master unit checks the connection of each device on the MOST network.
      Fig 5: Screen Display - MOST Line Check
      GTY417805Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      SCREEN DESCRIPTION

      Display Content
      *a: Node position number for devices connected to the MOST network. MOST node position numbers are provided for devices connected to the MOST network.
      *b: Device Name List
      • Device Name List displays some of the devices that make up the navigation system.
      • The names of the components from Device Name List are shown in the following table.
      *c: Check Result The master unit displays the check result on the screen based on the response information from each slave unit.
      *B: DEVICE NAME LIST

      Name Component
      EMV-M Multi-media module receiver assembly
      AMP Stereo component amplifier assembly
      *C: CHECK RESULT

      Result Meaning
      OK There was a response for the connection check during the MOST line check.
      NCON There was no response for the connection check during the MOST line check.

      HINT: 

      The device name and result will not be displayed if there is no system registration record and no response for the connection check during the MOST line check even if the device is connected to the MOST network.

    4. Read the system check result.
      Fig 6: Screen Display - Unit Check Mode
      GTY418529Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 7: Screen Display - System Check Mode
      GTY407642Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. If the check result is "DETAIL", touch the displayed check result to view the results on the "Unit Check Mode" screen and record them.
        NOTE:

        A maximum of 6 DTCs can be displayed for history and present DTCs on the "Unit Check Mode" screen. Therefore, when 6 DTCs are displayed, troubleshoot those DTCs first and then check the "Unit Check Mode" screen again to see if any other DTCs are displayed.

        HINT: 

        • When all results are "OK", this means that no DTCs are present.
        • When "MOST" is displayed for the result, select the "MOST" switch to display the "MOST Line Check" and check the MOST network.
        • 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.
        • 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, select the "Back" switch to return to the "System Check Mode" screen. Repeat the above step to view the results of other devices.
      2. Check the details of the DTC(s). Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2012 - ] .
  7. DTC CLEAR/RECHECK (CLEAR USING SYSTEM CHECK MODE SCREEN) 
    1. Clear DTC
      Fig 8: Screen Display - System Check Mode
      GTY407643Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Press the "Memory CLR" switch for 3 seconds.
      2. Confirm that 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 9: Screen Display - System Check Mode
      GTY407640Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      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 10: Screen Display - System Check Mode
        GTY407641Courtesy 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.

  8. FINISH DIAGNOSTIC MODE 
    1. Turn the engine switch off.
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