Mitsubishi Evolution X. Manual — part 92

SYSTEM OPERATION

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-17

KEYLESS ENTRY TIMER LOCK TIME

When none of the doors are opened within 30 sec-
onds after the doors are unlocked by the keyless
entry system, ETACS-ECU automatically outputs the
door lock signal to lock the doors. This function pre-
vents the doors from being unlocked unexpectedly
by operation errors. Using a customization function,
the timer lock period can be changed (Refer to

P.42B-28

).

.

OPERATION INHIBITION CONDITIONS

The operation of the system is inhibited when:

• The emergency key is in the ignition switch.

• Any door is open (door switch is ON). (including

door ajar)

THEFT-ALARM SYSTEM

Refer to GROUP 54A, Theft-alarm system

P.54A-44

.

PANIC ALARM SYSTEM

Refer to GROUP 54A, Panic alarm system

P.54A-46

.

ENGINE STARTING FUNCTION (IMMOBILIZER FUNCTION)

M2421009200225

When carrying the keyless operation key, a driver
can start/stop the engine by operating only the IG
knob. The immobilizer function prevents the engine
from starting, and immobilizes the vehicle by prohib-
iting the engine fuel injection ignition if a method
other than the keyless operation key registered for
that vehicle is used in an attempt to start the engine
after forced entry.

CONSTRUCTION DIAGRAM

AC709104

AC608095

AB

KOS-ECU

CPU

ECM

CPU

Ignition

Injector

Keyless operation key

Interior
transmitter
antenna
assembly
(Front)

Keyless
operation key
(Rear view)

Emergency key

ETACS-ECU

CAN-C
communication

CAN-B
communication

Radio
frequency
signal

Interior
transmitter
antenna
assembly
(Rear)

Receiver
antenna module

IG knob

Steering lock
(Built in
Steering lock unit)

Push switch
(Built in
Steering lock unit)

IG knob cap

OK status signal

IG knob
unlock signal

Radio
frequency
signal

Keyless
operation
key ID data

Starter relay

SYSTEM OPERATION

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-18

OPERATION

.

WHEN THE USER IS CARRYING THE
KEYLESS OPERATION KEY

1. Press the IG knob on the steering lock, and the

push switch inside the steering lock is turned ON.

2. When the push switch inside the steering lock is

turned ON, KOS-ECU activates the interior trans-
mitter antenna assembly to send the transmitter
signal to the keyless operation key.

3. On receiving the transmitter signal from

KOS-ECU, the keyless operation key performs
the keyless operation key certification and the
key ID calculation, and sends the keyless opera-
tion key ID data to KOS-ECU. (The keyless oper-
ation key cannot receive the transmitter signal
from KOS-ECU when it is not located within the
engine starting function valid area .)

4. The receiver antenna receives the signal from the

keyless operation key, and then KOS-ECU com-
pares the keyless operation key ID data sent from
the key with the one registered in it.

5. When this data coincides, KOS-ECU sends the

IG knob unlock signal to the steering lock unit
inside the steering lock.

6. On receiving the IG knob unlock signal, the steer-

ing lock unit performs processing (verification of
the KOS ID, etc.) based on the received data.
When no problem is found during the processing,
the unit sends the OK status signal to KOS-ECU,
and at the same time, electrically disengages the
steering lock mechanism to make the IG knob
rotatable.

7. When a keyless operation key certification agree-

ment memory "exists"

*1

in KOS-ECU when it

received the OK status signal from the steering
lock unit, the engine start permission communica-
tion (CAN communication) is performed between
KOS-ECU and the ECM by turning the IG knob
from the "ACC" position to the "ON"/"START"
position, and the engine starts. If the keyless
operation key certification agreement memory
"does not exist"

*2

, the engine does not start.

NOTE:

.

•

*1

: The keyless operation key certification

agreement memory "exists" means that a reg-
istered keyless operation key has been recog-
nized during the keyless operation key
certification communication.

•

*2

: When the keyless operation key certifica-

tion agreement memory "does not exist," the
"keyless operation key bringing-out monitor-
ing function" and the "keyless operation key
replacement monitoring function" (keyless
operation key monitoring controls) have
judged that the keyless operation key has
been carried out of the vehicle with the IG
knob in the LOCK "(OFF)" position while turn-
ing ON the push switch or in the ACC, ON, or
START position.

.

KEYLESS OPERATION KEY TAKE OUT
MONITORING FUNCTION

KOS-ECU monitors whether the keyless operation
key is brought out of the car by performing a certifica-
tion communication with the keyless operation key
inside the car when all the doors are closed. If the
keyless operation key is brought out of the car while
the IG knob is in the position other than the LOCK
(OFF) position, KOS-ECU notifies that the key is
brought out of the car.
When none of the registered keyless operation keys
(up to four) respond during the communication,
KOS-ECU determines that the key has been brought
out of the car, and the keyless operation key certifi-
cation agreement memory "does not exist," and does
not permit starting of the engine.

NOTE: The monitoring function is inhibited when:

.

•

The keyless operation key certification agree-
ment memory "does not exist" from the start.

•

The emergency key is in the IG knob.

•

The IG knob is in LOCK "(OFF)" position and the
push switch is OFF.

•

The vehicle is judged running (shift lever is in the
position other than "P" or "N" <TC-SST>, or vehi-
cle speed is 6 km/h or higher).

.

SYSTEM OPERATION

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-19

KEYLESS OPERATION KEY
REPLACEMENT MONITORING
FUNCTION

If the keyless operation key carrying-out monitoring
function once detects that the key has been carried
out of the vehicle with the IG knob in the LOCK
"(OFF)" position and with the push switch in other
than OFF, and then the key is brought into the vehi-
cle, the engine must be started when the IG knob is
turned to the ON or START position. For this pur-
pose, KOS-ECU performs the certification communi-
cation with the keyless operation key inside the
vehicle every 5 seconds to monitor the replacement
of the keyless operation key. When any of the regis-
tered keyless operation keys sends a response,
KOS-ECU determines that the key has been brought
into the vehicle (replaced), and sets the keyless
operation key certification agreement memory to
"exist," and permits starting of the engine.

NOTE: The monitoring function is inhibited when:

.

•

The keyless operation key certification agree-
ment memory "exists" from the start.

•

The emergency key is in the IG knob.

•

The IG knob is in LOCK (OFF) position and the
push switch is OFF.

•

The vehicle is judged running (shift lever is in the
position other than "P" or "N" <TC-SST>, or vehi-
cle speed is 6 km/h or higher).

ENGINE STARTING FUNCTION VALID
AREA

The engine can be started only when the keyless
operation key is within the interior antenna receiving
area.

Emergency function

The emergency function is adopted, which starts the
engine by a combination of emergency key and key-
less operation key when the IG knob operation is
unavailable in case such as discharged battery. Also,
the engine can be started using the conventional
ignition key (transponder).

AC709160 AB

Interior transmitter antenna assembly (Front)

Antenna receiving area

Interior transmitter antenna assembly (Rear)

SYSTEM OPERATION

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-20

CONSTRUCTION DIAGRAM

OPERATION

.

1. Remove the IG knob cap, and insert the emer-

gency key into the keyless operation key in the
inverted direction, then insert it into the KOS
steering lock. Because the transponder (small
transmitter) integrated in the keyless operation
key only emits weak radio frequency signals,
operate the emergency key with the keyless
operation key inserted in the inverted direction.
Using the keyless operation key, push in the
emergency key, and then turn the key.

2. When the emergency key is turned to the ON

position, the transponder integrated in the key-
less operation key transmits an ID code unique to
each key (key ID) to the receiver antenna module
by radio.

3. KOS-ECU compares the sent key ID with the

already-registered ID code, and only when they
match, KOS-ECU permits the starting of engine.
(More than one trillion of ID code combinations
can be registered. This feature prevents code
copying, resulting in higher security of the sys-
tem.)

NOTE:

.

•

The transponder integrated in the keyless opera-
tion key uses the power supplied from the
receiver antenna module. Therefore, it can be
used even when the battery in keyless operation
key is discharged.

•

One keyless operation key is provided, and up to
four keys can be registered to one vehicle as
needed. Also for the number of emergency keys,
the same number of keys as that of keyless oper-
ation keys can be registered to one vehicle.

•

When KOS-ECU is replaced or when the keyless
operation key is lost or added, the ID codes for all
the keyless operation keys must be registered
again using the scan tool.

AC707540

Emergency key

ECM

CPU

CAN

Ignition

Injection

CAN-B

CAN-C

ETACS-ECU

Receiver
antenna
module

KOS-ECU

CAN

CPU

AC

Steering lock

Transponder

Key ID

Keyless operation key

Starter relay

AC609293

Emergency key

AB

IG knob

Receiver antenna
module

Keyless operation key