Mitsubishi Lancer Evolution X. Manual - part 10

 

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Mitsubishi Lancer Evolution X. Manual - part 10

 

 

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-65

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-66

(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.

STEP 12. Check the wiring harness between joint 
connector (CAN2) C-104 and ETACS-ECU connector C-301 
for a short to ground.

CAUTION

Disconnect the negative battery terminal. For details refer 
to 

P.54C-7

.

CAUTION

A digital multimeter should be used. For details refer to 

P.54C-7

.

CAUTION

The test wiring harness should be used. For details refer to 

P.54C-7

.

CAUTION

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

P.54C-7

.

(1) Disconnect ETACS-ECU connector and joint connector 

(CAN2), and measure at the wiring harness side.

(2) Measure the resistance between joint connector (CAN2) 

terminal 6 and body ground.

OK: 1 kΩ or more

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

AC709707

Harness side: C-104

AT

TEST 
HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-67

(3) Measure the resistance between joint connector (CAN2) 

terminal 19 and body ground.

OK: 1 kΩ or more

Q: Do all the resistances measure 1 kΩ or more?

YES : Check ETACS-ECU connector C-301, and repair if 

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

NO :  Repair the wiring harness between ETACS-ECU 

connector C-301 and joint connector (CAN2) C-104.

STEP 13. Using scan tool MB991958, diagnose the CAN 
bus line. (checking the ASC-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 ASC-ECU connector A-05.
(2) Connect scan tool MB991958 to the data link connector.
(3) Turn the ignition switch to the "ON" position.

AC709707AU

TEST 
HARNESS

Harness side: C-104

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-68

(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 ASC-ECU 

connector A-05 and joint connector (CAN3) C-127.

NO :  Check ASC-ECU connector A-05, and repair if 

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

STEP 14. Using scan tool MB991958, diagnose the CAN 
bus line. (checking the ECM 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 ECM connector B-10.

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

 

 

 

 

 

 

 

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