Mitsubishi Evolution X. Manual - part 565

 

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Mitsubishi Evolution X. Manual - part 565

 

 

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-167

Code No.U1417 Implausible coding data

CAUTION

• If DTC U1417 is set in KOS-ECU, always diagnose the 

CAN bus lines. If there is any fault in the CAN bus lines, 
an incorrect diagnostic trouble code may be set. In this 
case, the set diagnostic trouble code is not highly reli-
able.

• Before replacing the ECU, ensure that the communica-

tion circuit is normal.

• When diagnostic trouble code U1417 is set in 

KOS-ECU, the diagnostic trouble code may also be set 
in ETACS-ECU. When the diagnostic trouble code is set 
in ETACS-ECU, carry out the diagnosis of the diagnos-
tic trouble code for ETACS-ECU first.

.

CIRCUIT OPERATION

KOS-ECU receives the vehicle information stored in the 
ETACS-ECU via CAN bus lines.

.

DTC SET CONDITIONS

KOS-ECU communicates with ETACS-ECU via CAN bus lines. 
This diagnostic trouble code is set when the vehicle information 
received from the ETACS-ECU is invalid.

.

PROBABLE CAUSES

• Malfunction of ETACS-ECU

• Engine control module malfunction

• ETACS-ECUs have been interchanged between two vehi-

cles.

• KOS-ECU malfunction

• External noise interference

• WCMs have been interchanged between two vehicles.

DIAGNOSIS

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

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-168

STEP 1. Using scan tool MB991958, diagnose the CAN bus 
line.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect the 

Scan Tool (M.U.T.-III) 

P.42B-10

."

(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?

YES : Go to Step 2.
NO :  Repair the CAN bus line (Refer to GROUP 54C, 

Diagnosis 

P.54C-14

).

STEP 2. Using scan tool MB991958, read the other system 
diagnostic trouble code.
Check if DTC is set to the ETACS-ECU or engine control mod-
ule.
Q: Is the DTC set?

YES (DTC is set to ETACS-ECU.) : Troubleshoot the 

ETACS (Refer to GROUP 54A 

− ETACS, Diagnosis 

P.54A-582

).

YES (DTC is set to the engine control module.) : 

Troubleshoot the MFI system (Refer to GROUP 13A, 
Diagnosis 

P.13A-44

).

NO  :  Go to Step 3.

STEP 3. Check part number of ETACS-ECU.
Check the part number of ETACS-ECU.

OK: 8637A313

Q: Is the check result normal?

YES : Go to Step 4.
NO :  Replace ETACS-ECU.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-169

STEP 4. Check part number of KOS-ECU.
Check the part number of KOS-ECU.

OK: 8637A305

Q: Is the check result normal?

YES : Go to Step 5.
NO :  Replace KOS-ECU and register the ID codes (Refer 

to 

P.42B-12

).

STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set to the KOS-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON" 

position.

(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Replace KOS-ECU and register the ID codes (Refer 

to 

P.42B-12

).

NO :  The trouble can be an intermittent malfunction (Refer 

to GROUP 00 

− How to use 

Troubleshooting/inspection Service Points 

− How to 

Cope with Intermittent Malfunction 

P.00-15

).

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-170

DATA LIST REFERENCE TABLE

M1429605000125

Item No.

Scan tool MB991958 
display

Check condition

Normal condition

01

*

Received key data(ID)

−

Memorized keyless 
operation key ID

02

Received key 
data(button)

−

Switch display of the 
keyless operation key

03

Driver’s door lock SW

Driver's door lock switch: ON

ON

Driver's door lock switch: OFF

OFF

04

Driver’s door unlock 
SW

Driver's door unlock switch: ON

ON

Driver's door unlock switch: OFF

OFF

05

Passenger’s door lock 
SW

Front passenger's door lock switch: ON ON
Front passenger's door lock switch: 
OFF

OFF

06

Passenger’s door 
unlock SW

Front passenger's door unlock switch: 
ON

ON

Front passenger's door unlock switch: 
OFF

OFF

07

*

Tail gate SW lock

Trunk lid lock switch: ON

ON

Trunk lid lock switch: OFF

OFF

08

Tail gate SW unlock

Trunk lid opener switch: ON

ON

Trunk lid opener switch: OFF

OFF

13

Number of registered 
IMMOB.key

−

Number of the keyless 
operation keys 
memorized

14

Memorized KOS keys

−

Number of the keyless 
operation keys 
memorized

21

Air pressure, Tire 1

−

−

22

Air pressure, Tire 2

23

Air pressure, Tire 3

24

Air pressure, Tire 4

25

*

Air pressure, Tire 5

31

Acceleration, Tire 1

−

−

32

Acceleration, Tire 2

33

Acceleration, Tire 3

34

Acceleration, Tire 4

35

*

Acceleration, Tire 5

36

Threshold of PRS. 
warning

The tire pressure is within the specified 
value range.

OFF

The tire pressure is not within the 
specified value range.

ON

 

 

 

 

 

 

 

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