Mitsubishi Evolution X. Manual - part 1147

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-223

STEP 44. Check the wiring harness between joint 
connector (CAN1) C-105 and radio and CD player or CD 
changer connector C-107 for open circuit.
(1) Disconnect joint connector (CAN1) C-105 and radio and CD 

player or CD changer connector C-107, and check the 
wiring harness.

(2) Check the wiring harness between joint connector (CAN1) 

C-105 (terminal 5) and radio and CD player or CD changer 
connector C-107 (terminal 23)

OK: Continuity exists (2 

Ω or less)

(3) Check the wiring harness between joint connector (CAN1) 

C-105 (terminal 16) and radio and CD player or CD changer 
connector C-107 (terminal 33)

OK: Continuity exists (2 

Ω or less)

Q: Is the wiring harness between joint connector (CAN1) 

C-105 and radio and CD player or CD changer connector 
C-107 in good condition?
YES (vehicles without satellite radio) : Go to Step 47.
YES (vehicles with satellite radio) : Go to Step 46.
NO  :  Go to Step 55.

STEP 45. Check the wiring harness between joint 
connector (CAN1) C-105 and CAN box unit connector C-15 
for open circuit.
(1) Disconnect joint connector (CAN1) C-105 and CAN box unit 

connector C-15, and check the wiring harness.

(2) Check the wiring harness between joint connector (CAN1) 

C-105 (terminal 5) and CAN box unit connector C-15 
(terminal 8)

OK: Continuity exists (2 

Ω or less)

AC709707

AC709707 CF

Harness side: C-105

TEST 
HARNESS

Harness side: C-107

TEST HARNESS

AC709707 CG

Harness side: C-105

Harness side: C-107

TEST 
HARNESS

TEST HARNESS

AC709707

AC709707 CH

Harness side: C-105

Harness side: C-15

TEST 
HARNESS

TEST HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-224

(3) Check the wiring harness between joint connector (CAN1) 

C-105 (terminal 16) and CAN box unit connector C-15 
(terminal 9)

OK: Continuity exists (2 

Ω or less)

NOTE: Prior to the wiring harness inspection, check inter-
mediate connector C-108, and repair if necessary.

Q: Is the wiring harness between joint connector (CAN1) 

C-105 and CAN box unit connector C-15 in good 
condition?
YES (vehicles without satellite radio) : Go to Step 47.
YES (vehicles with satellite radio) : Go to Step 46.
NO  :  Go to Step 56.

STEP 46. Check the wiring harness between joint 
connector (CAN1) C-105 and satellite radio tuner 
connector C-18 for open circuit.
(1) Disconnect joint connector (CAN1) C-105 and satellite radio 

tuner connector C-18, and check the wiring harness.

(2) Check the wiring harness between joint connector (CAN1) 

C-105 (terminal 2) and satellite radio tuner connector C-18 
(terminal 4)

OK: Continuity exists (2 

Ω or less)

(3) Check the wiring harness between joint connector (CAN1) 

C-105 (terminal 13) and satellite radio tuner connector C-18 
(terminal 11)

OK: Continuity exists (2 

Ω or less)

Q: Is the wiring harness between joint connector (CAN1) 

C-105 and satellite radio tuner connector C-18 in good 
condition?
YES : Go to Step 47.
NO :  Go to Step 57.

AC709707 CI

Harness side: C-105

Harness side: C-15

TEST 
HARNESS

TEST 
HARNESS

AC709707 CJ

Harness side: C-105

Harness side: C-18

TEST 
HARNESS

TEST 
HARNESS

AC709707 CK

Harness side: C-105

Harness side: C-18

TEST 
HARNESS

TEST HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-225

STEP 47. Check the wiring harness between joint 
connector (CAN1) C-105 and ETACS-ECU connector C-301 
for open circuit.
(1) Disconnect joint connector (CAN1) C-105 and ETACS-ECU 

connector C-301, and check the wiring harness.

(2) Check the wiring harness between joint connector (CAN1) 

C-105 (terminal 6) and ETACS-ECU connector C-301 
(terminal 6)

OK: Continuity exists (2 

Ω or less)

(3) Check the wiring harness between joint connector (CAN1) 

C-105 (terminal 19) and ETACS-ECU connector C-301 
(terminal 7)

OK: Continuity exists (2 

Ω or less)

Q: Is the wiring harness between joint connector (CAN1) 

C-105 and ETACS-ECU connector C-301 in good 
condition?
YES : Go to Step 58.
NO :  Repair the wiring harness between joint connector 

(CAN1) C-105 and ETACS-ECU connector C-301.

STEP 48. Using scan tool MB991958, diagnose the CAN 
bus line. (checking the combination meter 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 combination meter connector C-04.

AC709707 CP

Harness side: C-105

Harness side: C-301

TEST 
HARNESS

TEST 
HARNESS

AC709707 CQ

Harness side: C-105

Harness side: C-301

TEST 
HARNESS

TEST 
HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-226

(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 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.

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