Mitsubishi Lancer Evolution X. Manual - part 41

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-189

(4) Diagnose CAN bus lines, and check if the scan tool 

MB991958 screen is as shown in the figure.

OK: The display of the scan tool MB991958 is as 
shown in the figure.

Q: Does scan tool MB991958 screen correspond to the 

illustration?
YES : Repair the wiring harness between joint connector 

(CAN1) C-105 and combination meter connector 
C-04.

NO :  Check combination meter connector C-04, and repair 

if necessary. If the combination meter connector is in 
good condition, replace the combination meter.

AC709542 AD

: Red section on screen

M.U.T.

J/C (3)

J/C (2)

ASC

ENGINE

ETACS

<M/T>

SAS

S-AWC

J/C (1)

KOS/WCM

SRS

A/C

AUDIO

MMCS

Sat Radio

HFM

OCM

METER

AC709543 AD

: Red section on screen

M.U.T.

J/C (3)

J/C (2)

ASC

LEVER

ETACS

<TC-SST>

SAS

S-AWC

J/C (4)

TC-SST

ENGINE

J/C (1)

KOS/WCM

SRS

A/C

AUDIO

MMCS

Sat Radio

HFM

OCM

METER

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-190

STEP 25. Using scan tool MB991958, diagnose the CAN 
bus line. (checking the KOS-ECU for internal failure)

CAUTION

Strictly observe the specified wiring harness repair proce-
dure. For details refer to 

P.54C-7

.

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) Disconnect KOS-ECU connector C-05.
(2) Connect scan tool MB991958 to the data link connector.
(3) Turn the ignition switch to the "ON" position.

(4) Diagnose CAN bus lines, and check if the scan tool 

MB991958 screen is as shown in the figure.

OK: The display of the scan tool MB991958 is as 
shown in the figure.

Q: Does scan tool MB991958 screen correspond to the 

illustration?
YES : Repair the wiring harness between joint connector 

(CAN1) C-105 and KOS-ECU connector C-05.

NO :  Check KOS-ECU connector C-05, and repair if 

necessary. If the KOS-ECU connector is in good 
condition, replace the KOS-ECU.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

AC709542 AD

: Red section on screen

M.U.T.

J/C (3)

J/C (2)

ASC

ENGINE

ETACS

<M/T>

SAS

S-AWC

J/C (1)

KOS/WCM

SRS

A/C

AUDIO

MMCS

Sat Radio

HFM

OCM

METER

AC709543 AD

: Red section on screen

M.U.T.

J/C (3)

J/C (2)

ASC

LEVER

ETACS

<TC-SST>

SAS

S-AWC

J/C (4)

TC-SST

ENGINE

J/C (1)

KOS/WCM

SRS

A/C

AUDIO

MMCS

Sat Radio

HFM

OCM

METER

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-191

STEP 26. Using scan tool MB991958, diagnose the CAN 
bus line. (checking the WCM for internal failure)

CAUTION

Strictly observe the specified wiring harness repair proce-
dure. For details refer to 

P.54C-7

.

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) Disconnect WCM connector C-07.
(2) Connect scan tool MB991958 to the data link connector.
(3) Turn the ignition switch to the "ON" position.

(4) Diagnose CAN bus lines, and check if the scan tool 

MB991958 screen is as shown in the figure.

OK: The display of the scan tool MB991958 is as 
shown in the figure.

Q: Does scan tool MB991958 screen correspond to the 

illustration?
YES : Repair the wiring harness between joint connector 

(CAN1) C-105 and WCM connector C-07.

NO :  Check WCM connector C-07, and repair if necessary. 

If the WCM connector is in good condition, replace 
the WCM.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

AC709542 AD

: Red section on screen

M.U.T.

J/C (3)

J/C (2)

ASC

ENGINE

ETACS

<M/T>

SAS

S-AWC

J/C (1)

KOS/WCM

SRS

A/C

AUDIO

MMCS

Sat Radio

HFM

OCM

METER

AC709543 AD

: Red section on screen

M.U.T.

J/C (3)

J/C (2)

ASC

LEVER

ETACS

<TC-SST>

SAS

S-AWC

J/C (4)

TC-SST

ENGINE

J/C (1)

KOS/WCM

SRS

A/C

AUDIO

MMCS

Sat Radio

HFM

OCM

METER

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-192

STEP 27. Using scan tool MB991958, diagnose the CAN 
bus line. (checking the SRS-ECU for internal failure)

CAUTION

Strictly observe the specified wiring harness repair proce-
dure. For details refer to 

P.54C-7

.

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) Disconnect SRS-ECU connector C-37.
(2) Connect scan tool MB991958 to the data link connector.
(3) Turn the ignition switch to the "ON" position.

(4) Diagnose CAN bus lines, and check if the scan tool 

MB991958 screen is as shown in the figure.

OK: The display of the scan tool MB991958 is as 
shown in the figure.

Q: Does scan tool MB991958 screen correspond to the 

illustration?
YES : Repair the wiring harness between joint connector 

(CAN1) C-105 and SRS-ECU connector C-37.

NO :  Check SRS-ECU connector C-37, and repair if 

necessary. If the SRS-ECU connector is in good 
condition, replace the SRS-ECU.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

AC709542 AD

: Red section on screen

M.U.T.

J/C (3)

J/C (2)

ASC

ENGINE

ETACS

<M/T>

SAS

S-AWC

J/C (1)

KOS/WCM

SRS

A/C

AUDIO

MMCS

Sat Radio

HFM

OCM

METER

AC709543 AD

: Red section on screen

M.U.T.

J/C (3)

J/C (2)

ASC

LEVER

ETACS

<TC-SST>

SAS

S-AWC

J/C (4)

TC-SST

ENGINE

J/C (1)

KOS/WCM

SRS

A/C

AUDIO

MMCS

Sat Radio

HFM

OCM

METER