DIAGNOSIS MODE <VEHICLES WITH MMCS>


As a diagnosis mode for the hands free ECU, version information of the hands free ECU and diagnostic results of the hands free ECU and the microphone unit can be displayed by the service mode of the multivision display.


HOW TO INITIATE THE SERVICE MODE



1.Press "MAP" button and "SETTINGS" button at the same time for at least 3.5 seconds.

2.The service mode will be initiated. Then "Service" screen will be displayed.

HOW TO TERMINATE THE SERVICE MODE


If the operations below are done, the service mode will be terminated.

  • If "Back" button is selected on "Service" screen, the service mode will terminate and then return to the previous screen.

HANDS FREE MODULE


note
  • While the hands free ECU is in diagnosis mode, connection with the Bluetooth® device is shut down.
  • While the hands free ECU is in diagnosis mode, the sound input to the microphone unit is output directly through the speaker.


1.Select "hands free module" on "Service" screen.

2."Hands Free Module" screen is displayed.

SPECIFICATION OF DISPLAY ITEM
Displayed name
Detail
VOL
The volume of the sound input to the microphone unit and output through the speaker while the hands free ECU is in diagnosis mode. (The sound volume can be changed by operating the multivision display.)
Parts No
The part number of the hands free ECU is displayed in 8 digits.
H/W version
The hardware version information of the hands free ECU is displayed in 2 digits.
S/W version
The software version information of the hands free ECU is displayed in 7 digits.
HFM Self Check
The hands free ECU state is displayed.

  • "OK": Normal (There is no abnormality in the hands free ECU.)
  • "NG": Abnormal (The hands free ECU may have a problem.)
    note If "NG" is displayed, turn the ignition switch to the "OFF" position once. Then, turn the ignition switch to the "ON" position, and enter into the diagnosis mode. When the HFM Self Check display is NG again, the hands free ECU is determined to be defective.
HFM MIC Check
Displays the communication condition of the hands free ECU and the microphone unit.

  • "OK": Normal (There is no short circuit or open circuit in the line between the microphone unit and the hands free ECU.)
  • "NG (Short)": This message is displayed when the line between the microphone unit and the hands free ECU is shorted.
  • "NG (Open)": (This message is displayed when there is an open circuit in the line between the microphone unit and the hands free ECU.)

DISPLAY BUTTON AND FUNCTION
Display button
Detail
S/W Update
Execution button for software update of the hands free ECU (Displayed only when the update is possible.)
Error Code
Error Code screen is displayed. (This button is displayed in grey when "HFM Self Check" is "OK.")
Unlock
Forcibly unlocks the 4-digit passcode that was set by the security function. (When the ECU is not locked by passcode, the "Unlock" button is displayed in grey.)
Back
Returns to "Service" screen.

SOFTWARE UPDATE (S/W UPDATE)


The software of the hands free ECU can be updated.
note
  • "S/W Update" is displayed when an USB that contains files to update the hands free ECU is connected.
  • When the software update cannot continue because of improper removal of the USB during the update or of an incorrect update code, the display returns to the "Hands Free Module" screen. At this time, warning is not displayed.

1.Press "S/W Update."

2.Select "Yes." (When "No" is selected, the display returns to the "Hands Free Module" screen.)

3.Input the 4-digit code for update. ("Enter" is displayed in grey until the 4-digit code is input.)


4.Update starts if the 4-digit code is normal.
note
  • When the input code is normal, the speaker will not output the sound input to the microphone unit until the display returns to the "Hands Free Module" screen.
  • When the data rewriting operation is failed, the error screen is displayed.

5.The "Reboot" screen is displayed when the update is completed successfully.

6.After the hands free ECU is rebooted, the "Update successfully." screen is displayed. When "OK" is selected, the display returns to the "Hands Free Module" screen.

ERROR CODE


The error code is displayed to show the internal state of the ECU.
note This code shows the internal state of the hands free ECU. Do not determine that the ECU is defective even when an error code is displayed. Be sure to diagnose the ECU before replacing it.

1.Press "Error Code."
note "Error Code" is displayed when the "HFM Self Check" is "NG."

2.When "Back" is selected, the display returns to the "Hands Free Module" screen.

UNLOCK


Forcibly unlocks the 4-digit passcode that was set by the security function.
note When the ECU is not locked by passcode, the "Unlock" button is displayed in grey.

1.Press "Unlock."

2.When "Yes" is selected, "Lock mode canceled" will be displayed and the passcode lock will be unlocked.
note When "No" is selected, the display returns to the "Hands Free Module" screen.

3.The display returns to the "Hands Free Module" screen after 4 seconds.




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