Mitsubishi Evolution X. Manual - part 526

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-11

4. Select "From 2006 MY" of "Model Year." When the "Vehicle 

Information" is displayed, check the contents.

5. Select "ETACS" from "System List", and press the "OK" 

button.
NOTE: When the "Loading Option Setup" list is displayed, 
check the applicable item.

6. Select "Diagnostic Trouble Code."
7. If a DTC is set, it is shown.
8. Choose "Erase DTCs" to erase the DTC.

HOW TO DIAGNOSE THE CAN BUS LINES

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "CAN bus diagnosis" from the start-up screen.
4. When the vehicle information is displayed, confirm that it 

matches the vehicle being diagnosed.

• If they match, go to step 8.

• If not, go to step 5.

5. Select the "view vehicle information" button.
6. Enter the vehicle information and select the "OK" button.
7. When the vehicle information is displayed, confirm again 

that it matches the vehicle being diagnosed.

• If they match, go to step 8.

• If not, go to step 5.

8. Select the "OK" button.
9. When the optional equipment screen is displayed, choose 

the one which the vehicle is fitted with, and then select the 
"OK" button.

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-12

CHECK OF FREEZE FRAME DATA

The freeze frame data can be checked by using 
M.U.T.-III.

.

When detecting fault and storing the diagnosis code, 
the ECU connected to CAN bus line obtains the data 
before the determination of the diagnosis code and 
the data when the diagnosis code is determined, and 
then stores the ECU status of that time. By analysing 
each data from M.U.T.-III, the troubleshooting can be 
performed more efficiently. The displayed items are 
as the table below.

Display item list

ID CODE REGISTRATION NECESSITY JUDGMENT TABLE

M1429604800355

CAUTION

Do not replace the engine control module and 
KOS-ECU at the same time. When replacing sev-
eral ECUs, always replace one ECU at a time, reg-
ister the necessary IDs in it, and then replace the 
next ECU.
The individual unique ID code is stored in the tran-
sponder (small transmitter) and KOS-ECU, engine 
control module (ECM), keyless operation key, and 
steering lock unit for KOS. Under the conditions 
shown in the table, the corresponding ID code has to 
be registered with KOS-ECU or the ECM again.

NOTE: The KOS-ECU memory can memorise the 
maximum 4 different keyless operation keys (keyless 
operation key ID codes and key IDs).

Item No.

Item name

Data item

Unit

1

Odometer

Total driving distance after the diagnosis code is 
generated

km

2

Ignition cycle

Number of times the ignition switch is turned "ON" or 
"LOCK (OFF)" after the past failure transition

Number of 
counts is 
displayed.

4

Accumulated minute Cumulative time for current malfunction of diagnosis 

code

min

Item

Operation contents and 
procedure

Reference page for registration 
contents

When the engine control module 
is replaced.

1. Registration of ENG key code.
2. VIN programmed.

ENG key code & VIN reg (Refer to 
GROUP 00 

− Precautions before 

Service 

− How to Perform VIN 

Writing 

P.00-27

).

When KOS-ECU is replaced.

1. Register the steering lock unit 

again.

2. VIN programmed.
3. Register all the key IDs of 

keyless operation keys again.

4. Register all the keyless 

operation key IDs of keyless 
operation keys again.

5. Register the TPMS transmittters.

• Steering Lock Unit Registration, 

Key and F.A.S.T.-key

*1

 

Registration and TPMS 
transmitter ID registration (Refer 
to 

P.42B-265

).

• VIN Writing (Refer to GROUP 

00 

− Precautions before Service 

− How to Perform VIN Writing 

P.00-27

).

When the receiver antenna 
module is replaced.

Operation is not needed.

−

When the receiver antenna 
assembly is replaced.

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-13

NOTE: 

.

•

*1

: KOS and KOS key are indicated as F.A.S.T and F.A.S.T.-key respectively in the scan tool screen.

•

*2

: Key (the key that can be used to lock/unlock the door only)

When the keyless operation key 
is added or replaced separately

1. Register all the key IDs of 

keyless operation keys again.

2. Register all the keyless 

operation key IDs of keyless 
operation keys again.

Key and F.A.S.T.-key Registration 
(Refer to 

P.42B-265

).

When a keyless operation key is 
lost.

1. Register all the key IDs of 

keyless operation keys other 
than the lost one again.

2. Register all the keyless 

operation key IDs of keyless 
operation keys other than the 
lost one again.

When an emergency key  is 
added as a unit.

Operation is not needed.

−

When an emergency key is lost 
as a unit.
When the emergency key is 
replaced by the full service key 
set or the handle lock service key 
set is replaced by the piece.

When the key

*2

 is replaced by 

the door service key set is added 
by the piece.
When TPMS transmitter is 
replaced.

Register the TPMS trnsmitters.

TPMS transmitter ID registration 
(Refer to 

P.42B-265

).

Item

Operation contents and 
procedure

Reference page for registration 
contents

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-14

KEY SUPPLY UNIT

KEY SUPPLY UNIT LIST FOR OTHER THAN INDIVIDUAL KEY

KOS emergency key

KOS key

AC610642

AC709685

Full service key set

Handle lock service key set

Door service key set

NOTE: Key (It is the key that comes with the door 
service key set. It can only be used for locking 
and unlocking, and it cannot start the engine.)

AC610158

AC610159

AC610062

AC607881