Mitsubishi Outlander GS45X. Manual — part 1287

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-93

STEP 2. Check the wiring harness between joint connector
(CAN3) C-01 and ABS-ECU connector A-01 for open
circuit.

CAUTION

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

P.54C-7

.

(1) Disconnect joint connector (CAN3) C-01 and ABS-ECU

connector A-01, and check the wiring harness.

(2) Check the wiring harness between joint connector (CAN3)

C-01 (terminal No.6) and ABS-ECU connector A-01
(terminal No.4)

OK: Continuity exists (2 ohms or less)

(3) Check the wiring harness between joint connector (CAN3)

C-01 (terminal No.19) and ABS-ECU connector A-01
(terminal No.6)

OK: Continuity exists (2 ohms or less)

Q: Is the wiring harness between joint connector (CAN3)

C-01 and ABS-ECU connector A-01 in good condition?
YES : Check the power supply circuit of the ABS-ECU.

Refer to GROUP 35B, Troubleshooting

P.35B-149

.

NO : Repair the wiring harness between joint connector

(CAN3) C-01 and ABS-ECU connector A-01.

AC709707

Harness side: C-01

ND

Harness side: A-01

TEST
HARNESS

TEST
HARNESS

AC709707

Harness side: C-01

NE

Harness side: A-01

TEST
HARNESS

TEST HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-94

DIAGNOSTIC ITEM 11: Diagnose when the scan tool cannot receive the data sent by ASC-ECU
<vehicles with ASC>.

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

CAN DRIVE
CIRCUIT

STEERING WHEEL
SENSOR

AWD-ECU

AWC-ECU

JOINT CONNECTOR
(CAN2)

JOINT CONNECTOR
(CAN3)

TRANSAXLE
CONTROL MODULE

ASC-ECU

ABS-ECU

ENGINE CONTROL
MODULE

:VEHICLES WITHOUT ASC

NOTE

:VEHICLES WITH ASC

:6A/T

:CVT

:ELECTRONIC CONTROLLED AWD
:S-AWC

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-95

.

FUNCTION

If the scan tool MB991958 cannot communicate with
the ASC-ECU, this diagnosis result will be set.

.

TROUBLE JUDGMENT CONDITIONS

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

.

TROUBLESHOOTING HINTS

• Malfunction of the connector [joint connector

(CAN3) or ASC-ECU connector improperly con-
nected]

• Malfunction of the wiring harness [open circuit

between the ASC-ECU and the joint connector
(CAN3), power supply circuit to the ASC-ECU]

• Malfunction of the ASC-ECU

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

STEP 1. Check joint connector (CAN3) C-01 and ASC-ECU
connector A-02 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 (CAN3) C-01 and ASC-ECU

connector A-02 in good condition?
YES : Go to Step 2.
NO : Repair the damaged parts.

AC901112

Connector: A-02

A-02 (B)

AF

AC901075 AS

Connector: C-01

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-96

STEP 2. Check the wiring harness between joint connector
(CAN3) C-01 and ASC-ECU connector A-02 for open
circuit.

CAUTION

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

P.54C-7

.

(1) Disconnect joint connector (CAN3) C-01 and ASC-ECU

connector A-02, and check the wiring harness.

(2) Check the wiring harness between joint connector (CAN3)

C-01 (terminal No.6) and ASC-ECU connector A-02
(terminal No.12)

OK: Continuity exists (2 ohms or less)

(3) Check the wiring harness between joint connector (CAN3)

C-01 (terminal No.19) and ASC-ECU connector A-02
(terminal No.13)

OK: Continuity exists (2 ohms or less)

Q: Is the wiring harness between joint connector (CAN3)

C-01 and ASC-ECU connector A-02 in good condition?
YES : Check the power supply circuit of the ASC-ECU.

Refer to GROUP 35C, Troubleshooting

P.35C-216

.

NO : Repair the wiring harness between joint connector

(CAN3) C-01 and ASC-ECU connector A-02.

AC709707

Harness side: C-01

NW

Harness side: A-02

TEST
HARNESS

TEST
HARNESS

AC709707

Harness side: C-01

NX

Harness side: A-02

TEST
HARNESS

TEST HARNESS