Mitsubishi Evolution X. Manual - part 1119

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-111

STEP 2. Check the wiring harness between joint connector 
(CAN4) A-14 and transaxle assembly connector B-107 for 
open circuit.

CAUTION

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

P.54C-7

.

(1) Disconnect joint connector (CAN4) A-14 and transaxle 

assembly B-107, and check the wiring harness.

(2) Check the wiring harness between joint connector (CAN4) 

A-14 (terminal 6) and transaxle assembly connector B-107 
(terminal 5)

OK: Continuity exists (2 

Ω or less)

(3) Check the wiring harness between joint connector (CAN4) 

A-14 (terminal 19) and transaxle assembly connector B-107 
(terminal 2)

OK: Continuity exists (2 

Ω or less)

Q: Is the wiring harness between joint connector (CAN4) 

A-14 and transaxle assembly connector B-107 in good 
condition?
YES : Check the power supply circuit of the transaxle 

assembly. Refer to GROUP 22C, TC-SST 

− Diagnosis 

P.22C-10

.

NO :  Repair the wiring harness between joint connector 

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

AC709746

AC709746

Harness side: A-14

AF

Harness side: B-107

TEST 
HARNESS

TEST 
HARNESS

AC709746

Harness side: A-14

AG

Harness side: B-107

TEST 
HARNESS

TEST 
HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-112

DIAGNOSTIC ITEM 12: Diagnose the lines between the ETACS-ECU and joint connector (CAN2).

CAUTION

When servicing a CAN bus line, ground yourself by touching a metal object such as an unpainted 
water pipe. If you fail to do so, a component connected to the CAN bus line may be damaged.

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

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-113

TRANSAXLE 
ASSEMBLY

ENGINE 
CONTROL 
MODULE

CAN-C Communication Circuit <TC-SST>

ETACS-ECU

INTERFACE
CIRCUIT

CAN DRIVE
CIRCUIT

JOINT CONNECTOR
(CAN2)

JOINT CONNECTOR
(CAN3)

JOINT CONNECTOR
(CAN4)

SHIFT LEVER

ASC-ECU

STEERING
WHEEL SENSOR

S-AWC-ECU

NOTE

: THE TERMINAL NUMBERS DESCRIBED 

IN THE CIRCUIT DIAGRAM AGREE WITH 
THE NUMBERS MAKED ON THE 
TRANSAXLE ASSEMBLY CONNECTOR AND 
HARNESS SIDE CONNECTOR.

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-114

.

FUNCTION

If a failure is present in the wiring harness between 
the ETACS-ECU connector and the joint connector 
(CAN2), this diagnosis result will be set.

.

TROUBLE JUDGEMENT CONDITIONS

If a communication flag is not set for some of the 
ECUs on the CAN-C line, the ETACS-ECU deter-
mines that there is a failure.

.

TROUBLESHOOTING HINTS

• Malfunction of the connector [joint connector 

(CAN2) or ETACS-ECU connector improperly 
connected]

• Malfunction of the wiring harness [open circuit 

between the ETACS-ECU connector and the joint 
connector (CAN2), power supply circuit to the 
ECM]

• Malfunction of the ETACS-ECU

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

STEP 1. Check joint connector (CAN2) C-104 and 
ETACS-ECU connector C-301 for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.

CAUTION

The strand end of the twisted wire should be within 10 cm 
(4 inches) from the connector. For details refer to 

P.54C-7

.

Q: Are joint connector (CAN2) C-104 and ETACS-ECU 

connector C-301 in good condition?
YES : Go to Step 2.
NO :  Repair the damaged parts.

AC708950BX

Connector: C-104

AC708972AY

Connector: C-301

ETACS-ECU