Mitsubishi Lancer Evolution X. Manual - part 15

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-85

STEP 10. Using scan tool MB991958, diagnose the CAN 
bus line. (checking the steering wheel sensor for internal 
short to ground)

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 ETACS-ECU connector C-301.
(2) Connect scan tool MB991958 to the data link connector.
(3) Turn the ignition switch to the "ON" position.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-86

(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 steering wheel 

sensor connector C-209 and joint connector (CAN2) 
C-104.

NO :  Check steering wheel sensor connector C-209, and 

repair if necessary. If the steering wheel sensor 
connector is in good condition, replace the steering 
wheel sensor.

AC709542 AC

: Red section on screen

M.U.T.

J/C (3)

J/C (2)

KOS/WCM

SRS

A/C

AUDIO

MMCS

Sat Radio

HFM

OCM

METER

ASC

ENGINE

J/C (1)

ETACS

<M/T>

SAS

S-AWC

AC709543 AC

: Red section on screen

M.U.T.

J/C (3)

J/C (2)

KOS/WCM

SRS

A/C

AUDIO

MMCS

Sat Radio

HFM

OCM

METER

ASC

LEVER

J/C (1)

ETACS

<TC-SST>

SAS

S-AWC

J/C (4)

TC-SST

ENGINE

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-87

STEP 11. Using scan tool MB991958, diagnose the CAN 
bus line. (checking the AWC-ECU for internal short to 
ground)

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 AWC-ECU connector C-46.
(2) Connect scan tool MB991958 to the data link connector.
(3) Turn the ignition switch to the "ON" position.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-88

(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 AWC-ECU 

connector C-46 and joint connector (CAN2) C-104.

NO :  Check AWC-ECU connector C-46, and repair if 

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

AC709542 AC

: Red section on screen

M.U.T.

J/C (3)

J/C (2)

KOS/WCM

SRS

A/C

AUDIO

MMCS

Sat Radio

HFM

OCM

METER

ASC

ENGINE

J/C (1)

ETACS

<M/T>

SAS

S-AWC

AC709543 AC

: Red section on screen

M.U.T.

J/C (3)

J/C (2)

KOS/WCM

SRS

A/C

AUDIO

MMCS

Sat Radio

HFM

OCM

METER

ASC

LEVER

J/C (1)

ETACS

<TC-SST>

SAS

S-AWC

J/C (4)

TC-SST

ENGINE