Mitsubishi Outlander GS45X. Manual — part 1306

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-169

STEP 2. Check the wiring harness between joint connector
(CAN1) C-103 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 joint connector (CAN1) C-103 and ETACS-ECU

connector C-301, and check the wiring harness.

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

C-103 (terminal 6) and ETACS-ECU connector C-301
(terminal 6)

OK: Continuity exists (2 ohms or less)

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

C-103 (terminal 19) and ETACS-ECU connector C-301
(terminal 7)

OK: Continuity exists (2 ohms or less)

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

C-103 and ETACS-ECU connector C-301 in good
condition?
YES : Go to Step 3.
NO : Repair the wiring harness between joint connector

(CAN1) C-103 and ETACS-ECU connector C-301.

AC709707 MS

Harness side: C-103

Harness side: C-301

Test
harness

Test
harness

AC709707 MT

Harness side: C-103

Harness side: C-301

Test
harness

Test
harness

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-170

STEP 3. Using scan tool MB991958, diagnose the CAN bus
line. (trouble symptom check)

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) 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

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 : 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 : Replace the ETACS-ECU.

ZC501967

AC404789

AC702802

MB991824

MB991827

MB991910

Data link

connector

AB

ACA02847AB

: Red section on screen

M.U.T.

JC

JC

SAS

AWC

F.A.S.T.
/WCM

SRS

OCM

A/C

AUDIO

MMCS

Sat Radio

METER

ABS/ASC

AT/CVT

ENGINE

ETACS

JC

DIAGNOSIS

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CONTROLLER AREA NETWORK (CAN)

54C-171

DIAGNOSTIC ITEM 26: Short to power supply or ground, open circuit or line-to-line short in the
CAN-B bus lines.

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 Communication Circuit

ETACS-ECU

INTERFACE
CIRCUIT

INTERFACE
CIRCUIT

CAN DRIVE
CIRCUIT

FRONT SEAT
ASSEMBLY (LH)

OCCUPANT
CLASSIFICATION-
ECU

SATELLITE
RADIO
TUNER

RADIO AND CD
PLAYER OR CD
CHANGER

CAN
TRANSCEIVER
CIRCUIT

CAN BOX UNIT

JOINT CONNECTOR
(CAN1)

NOTE

:VEHICLES WITH RADIO AND
CD PLAYER OR CD CHANGER
:VEHICLES WITH MMCS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-172

CAN Communication Circuit

ETACS-ECU

INTERFACE
CIRCUIT

CAN DRIVE
CIRCUIT

A/C-ECU

COMBINATION METER

CPU

SRS-ECU

WCM

KOS-ECU

NOTE

VEHICLES WITH WCM
VEHICLES WITH KOS

CAN
TRANSCEIVER
CIRCUIT

CAN DRIVE
CIRCUIT

CAN DRIVE
CIRCUIT

JOINT CONNECTOR
(CAN1)