Mitsubishi Outlander GS45X. Manual - part 1270

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-25

CAN-RELATED CONNECTOR POSITION

M1548304101008

AC901112

Connectors: A-01, A-02

A-01 (B), 
A-02 (B)

AD

AC901598

Connector: B-11

AB

B-11 (GR)

AC901075 AL

Connectors: C-01, C-03, C-04, C-29, C-31, 
C-33, C-38

C-01

C-03

C-04

C-29

C-31

C-33

C-38

AC901076 AJ

Connectors: C-13, C-16, C-17, C-28

C-13

C-16, 
C-17

C-28 (Y)

AC901075AM

Connectors: C-102, C-103, C-125, C-128, 
C-138, C-139

C-102

C-103

C-125 (B)

C-128, 
C-139

C-138 (BR)

ACA02654

AL

Connectors: C-109, C-111

C-111

C-109 (B)

AC900844AV

Connector: C-209

ACA02655BB

Connector: C-301

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-26

AC901079AX

Connectors: D-34, D-34-2

D-34, 
D-34-2

Connector No.

Connector name

A-01

ABS-ECU <Vehicles without 
ASC>

A-02

ASC-ECU <Vehicles with ASC>

B-11

Engine control module (ECM)

C-01

Joint connector (CAN3)

C-03

Combination meter

C-04

Joint connector (CAN2)

C-13

CAN box unit <Vehicles with 
MMCS>

C-16

Radio and CD player or CD 
changer <Vehicles without 
MMCS>

C-17

Intermediate connector 
(Instrument panel wiring 
harness and navigation harness 
combination)

C-28

SRS-ECU

C-29

Wireless control module (WCM) 
<Vehicles without KOS>

C-31

Intermediate connector 
(Instrument panel wiring 
harness and floor wiring 
harness combination)

C-33

Intermediate connector 
(Instrument panel wiring 
harness and front wiring 
harness combination)

C-38

Transaxle control module 
(TCM) <CVT and 6A/T>

C-102

KOS-ECU <Vehicles with KOS>

C-103

Joint connector (CAN1)

C-109

A/C-ECU

C-111

Satellite radio tuner <Vehicles 
with satellite radio>

C-125

Data link connector

C-128

AWD-ECU <Electric controled 
AWD>

C-138

Intermediate connector (Front 
wiring harness and AWD sub 
wiring harness combination) 
<Electric controled AWD and 
S-AWC>

C-139

AWC-ECU <S-AWC>

C-209

Steering wheel sensor

C-301

ETACS-ECU

D-34

Front seat assembly (LH)

D-34-2

Occupant classification-ECU

Connector No.

Connector name

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-27

CAN BUS DIAGNOSTICS

DIAGNOSTIC ITEM 1: Diagnose when the scan tool cannot receive the data sent by ETACS-ECU

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.

.

FUNCTION

When the CAN bus diagnosis is carried out, the scan 
tool communicates with the ETACS-ECU. If a com-
munication flag is not set for the ETACS-ECU, the 
ETACS-ECU will be diagnosed as a communication 
error.

.

TROUBLE JUDGMENT CONDITIONS

If a communication flag is not set for the 
ETACS-ECU, the Scan Tool determines that there is 
a failure.

.

TROUBLESHOOTING HINTS

• Malfunction of the connector (data link connector 

or ETACS-ECU connector improperly connected)

• Malfunction of the wiring harness (open circuit, 

short to ground, short to power supply between 
the data link connector and the ETACS-ECU con-
nector, line-to-line short, or power supply to the 
ETACS-ECU)

• Malfunction of ETACS-ECU

CAN Communication Circuit

ETACS-ECU

DATA LINK
CONNECTOR

CAN DRIVE
CIRCUIT

INTERFACE
CIRCUIT

FRONT SIDE

AC702815AP

Connector: C-125

C-125 (B)

ACA02655BB

Connector: C-301

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-28

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

STEP 1. Check data link connector C-125 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 data link connector C-125 and ETACS-ECU 

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

STEP 2. Check the wiring harness between data link 
connector C-125 and ETACS-ECU connector C-301 for 
open circuit.

CAUTION

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

P.54C-7

.

(1) Disconnect the scan tool and ETACS-ECU connector 

C-301, and check the wiring harness.

(2) Check the wiring harness between data link connector 

C-125 (terminal No.6) and ETACS-ECU connector C-301 
(terminal No.5) <CAN_H>

OK: Continuity exists (2 ohms or less)

(3) Check the wiring harness between data link connector 

C-125 (terminal No.14) and ETACS-ECU connector C-301 
(terminal No.4) <CAN_L>

OK: Continuity exists (2 ohms or less)

Q: Is the wiring harness between data link connector C-125 

and ETACS-ECU connector C-301 in good condition?
YES : Go to Step 3.
NO :  Repair the wiring harness between data link 

connector C-125 and ETACS-ECU connector C-301.

AC709707

Test 
harness

Harness side: C-125

LU

Test harness

Harness side: C-301

AC709707

Harness side: C-34

JD

Test harness

Harness side: C-301

Test 
harness