Mitsubishi Evolution X. Manual — part 1103

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-47

STEP 16. Using scan tool MB991958, diagnose the CAN
bus line. (checking the shift lever for internal short)

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 shift lever connector C-27.
(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 shift lever

connector C-27 and joint connector (CAN3) C-127.

NO : Check shift lever connector C-27, and repair if

necessary. If the shift lever connector is in good
condition, replace the shift lever.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

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-48

STEP 17. Using scan tool MB991958, diagnose the CAN
bus line. (checking the TC-SST-ECU for internal short)

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 transaxle assembly connector B-107.
(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 transaxle

assembly connector B-107 and joint connector
(CAN4) A-14.

NO : Check transaxle assembly connector B-107, and

repair if necessary. If the transaxle assembly
connector is in good condition, replace the transaxle
assembly

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

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-49

STEP 18. 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 to the data link connector.
(2) Turn the ignition switch to the "ON" position.

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

is as shown in the illustration.

Q: Does the scan tool screen correspond to the

illustration?
YES : 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

).

NO : Check ETACS-ECU connector C-301, and repair if

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

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

AC709542 AB

: Red section on screen

M.U.T.

J/C (3)

SAS

J/C (2)

KOS/WCM

SRS

A/C

AUDIO

MMCS

Sat Radio

HFM

OCM

METER

ASC

ENGINE

J/C (1)

ETACS

<M/T>

S-AWC

AC709543 AB

: Red section on screen

M.U.T.

J/C (3)

SAS

J/C (2)

KOS/WCM

SRS

A/C

AUDIO

MMCS

Sat Radio

HFM

OCM

METER

ASC

LEVER

ENGINE

J/C (1)

ETACS

<TC-SST>

S-AWC

TC-SST

J/C (4)

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-50

DIAGNOSTIC ITEM 4: Diagnose shorts in the ground to CAN-C bus line.

CAN-C Communication Circuit <M/T>

ETACS-ECU

INTERFACE
CIRCUIT

CAN DRIVE
CIRCUIT

JOINT CONNECTOR
(CAN2)

JOINT CONNECTOR
(CAN3)

ASC-ECU

STEERING
WHEEL SENSOR

S-AWC-ECU

ENGINE
CONTROL
MODULE