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GX-201KEF2/LEF2/REF2/SEF2
The audio security system has been set for GX-201REF2
and GX-201RHF2.
●
Security Function
Security is released when an agreement is found between
the data from the immobilizer, which is sent from the vehicle,
and the data that are set beforehand.
The interrelationship in the security system is shown in the
chart below.
As a result of confirmation, if the code is judged to be au-
thentic, the system goes into normal operation. However, if
the code is not judged to be authentic, then the system goes
into the Security mode.
●
Security Mode
The system goes into the Security mode when the Immobi
code is not judged to be authentic when it is compared with
the Security code registered in the audio unit. When this hap-
pens, the unit can be operated for an hour. After the elapse of
an hour, the power on the unit is cut off and operation is force-
fully stopped.
Also, in the Non-registration mode, if an hour elapses, the
system will go into the Security mode. In the Security mode,
the power on the unit is cut off and operation is forcefully
stopped.
Note : When working on a unit to repair it, the repair would
should be conducted in the one hour effective time. After the
elapse of an hour, the power on the unit is cut off. If the power
is put on again, another hour will be given to operate on.
• Conditions of the audio unit during the Security mode
Power off.
Display light off.
Keys do not work (Except the EJECT Key).
Audio power off (No voice output).
Switching on TV sources not possible. ( Key operation from
the monitor not possible.)
Voice interruption/switching from NAVI and hands-free unit
not possible.
In the Security mode, the display is not lighted and when
there is an input from any of the key, “SECURITY” will be
displayed.
●
Delete Mode
The system goes in the Delete mode, when the “Request-
ing Delete” condition of the Integrated ECU operating condi-
tion signal from the Integrated ECU is obtained by the A/C
ECU via low-speed CAN into the gateway and it is sent to the
audio unit via UART.
The Delete mode is positioned as a Test mode and detailed
input methods are not disclosed.
The Security code recorded into the E2PROM in the Regis-
tration mode and Re-registration mode is cleared in the De-
lete mode and non-registration condition is obtained.
Note : When a linked product is repaired, the security code
must be deleted when the repair work is completed.
For GX-201, in order to maintain the security, deletion is
only effective when selection monitor is used.
SECURITY CODE (GX-201REF2)
●
Code Confirmation Mode
This mode is for judging whether the Security code is regis-
tered or not in the audio unit.
When the unit is reset, the operation will start from the Cur-
rent mode.
• The registration condition of the Security code can be
grasped using the E2PROM.
• The Security code is not registered or when abnormalities
detected with E2PROM, the system will move to Non-reg-
istration mode.
• When registering a Security code, the system will move to
Thus system will move to the Non-registration mode, when
the Security code is not registered for an audio unit.
Even if the Security code is not resisted, operation is pos-
sible for an hour. However, there is a certain limitations placed
on the operation. Using this time, production and a variation
on the products will be conducted.
●
Confirmation Mode
The system will automatically go into the Confirmation mode,
when the Security code is confirmed to be adjusted to in the
Code confirmation mode.
When the A/C ECU is obtained Through CAN from the Inte-
grated ECU on the vehicle side, it goes into the gateway. The
Immobi code sent to the audio unit by UART and the Security
code registered on the audio unit is compared.
BU ON
Code confirmation mode
Confirmation mode
Non-registration mode
Registration mode
Normal operation
Security mode
Delete mode
Re-Registration
OK
NG
Non-registration
Registration
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