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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.
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![](../../../img/54/ACF01256AD00ENG.png)
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1.Press "INFO/SET" button
and "SEEK TRACK >>l" button at the same time for at
least 3.5 seconds.
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![](../../../img/54/ACC01103AD00ENG.png)
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2.The service mode will be
initiated. Then "Service" screen will be displayed.
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If the operations below are done,
the service mode will be terminated.
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- If "Back" button is selected on "Service" screen,
the service mode will terminate and then return to
the previous screen.
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![](../../../img/54/ACC01103AD00ENG.png)
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1.Select "hands free module"
on "Service" screen.
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![](../../../img/54/ACC01160AF00ENG.png)
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2."Hands Free Module" screen
is displayed.
SPECIFICATION OF DISPLAY
ITEM
Displayed name
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Detail
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VOL
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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.)
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Parts
No
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The
part number of the hands free ECU is displayed
in 8 digits.
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H/W version
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The
hardware version information of the hands free
ECU is displayed in 2 digits.
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S/W version
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The
software version information of the hands free
ECU is displayed in 7 digits.
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HFM
Self Check
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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.
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HFM MIC
Check
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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.)
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DISPLAY BUTTON AND FUNCTION
Display button
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Detail
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S/W Update
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Execution button for software
update of the hands free ECU (Displayed only
when the update is possible.)
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Error
Code
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Error
Code screen is displayed. (This button is
displayed in grey when "HFM Self Check" is
"OK.")
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Unlock
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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.)
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Back
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Returns
to "Service" screen.
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The software of the hands free ECU
can be updated.
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![](../../../img/54/ACC01167AB00ENG.png)
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2.Select "Yes." (When "No"
is selected, the display returns to the "Hands Free Module"
screen.)
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![](../../../img/54/ACC01163AA00ENG.png)
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3.Input the 4-digit code for
update. ("Enter" is displayed in grey until the 4-digit code
is input.)
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![](../../../img/54/ACC01168AA00ENG.png)
![](../../../img/54/ACC01169AA00ENG.png)
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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.
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![](../../../img/54/ACC01170AA00ENG.png)
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5.The "Reboot" screen is
displayed when the update is completed
successfully.
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![](../../../img/54/ACC01171AB00ENG.png)
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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.
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The error code is displayed to show
the internal state of the ECU.
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![](../../../img/54/ACC01160AD00ENG.png)
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1.Press
"Error Code."
note |
"Error Code" is displayed when
the "HFM Self Check" is "NG."
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![](../../../img/54/ACC01162AA00ENG.png)
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2.When "Back" is selected,
the display returns to the "Hands Free Module"
screen.
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Forcibly unlocks the 4-digit
passcode that was set by the security function.
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![](../../../img/54/ACC01172AB00ENG.png)
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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.
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![](../../../img/54/ACC01173AB00ENG.png)
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3.The display returns to the
"Hands Free Module" screen after 4 seconds.
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