Mitsubishi Outlander GS45X. Manual — part 1294

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-121

STEP 2. Check the wiring harness between joint connector
(CAN1) C-103 and occupant classification-ECU connector
D-34-2 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 occupant

classification-ECU connector D-34-2, and check the wiring
harness.

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

C-103 (terminal No.11) and occupant classification-ECU
connector D-34-2 (terminal No.24)

OK: Continuity exists (2 ohms or less)

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

C-103 (terminal No.24) and occupant classification-ECU
connector D-34-2 (terminal No.25)

OK: Continuity exists (2 ohms or less)

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

C-103 and occupant classification-ECU connector
D-34-2 in good condition?
YES : Check the power supply circuit of the occupant

classification-ECU. Refer to GROUP 52B, SRS air
bag Diagnosis

P.52B-409

.

NO : Repair the wiring harness between joint connector

(CAN1) C-103 and occupant classification-ECU
connector D-34-2.

AC709707

AC709707 ME

Harness side: C-103

Harness side: D-34-2

Test harness

Test harness

AC709707 MF

Harness side: C-103

Harness side: D-34-2

Test harness

Test
harness

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-122

DIAGNOSTIC ITEM 20: Diagnose when the scan tool cannot receive the data sent by A/C-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.

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)

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-123

.

FUNCTION

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

.

TROUBLE JUDGMENT CONDITIONS

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

.

TROUBLESHOOTING HINTS

• Malfunction of the connector [joint connector

(CAN1), A/C-ECU connector improperly con-
nected]

• Malfunction of the wiring harness [open circuit

between the A/C-ECU connector and the joint
connector (CAN1), power supply circuit to the
A/C-ECU]

• Malfunction of the A/C-ECU

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

STEP 1. Check joint connector (CAN1) C-103 and A/C-ECU
connector C-109 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 (CAN1) C-103 and A/C-ECU

connector C-109 in good condition?
YES : Go to Step 2.
NO : Repair the damaged parts.

AC901075AX

Connector: C-103

AC901076AL

Connector: C-109

C-109 (B)

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-124

STEP 2. Check the wiring harness between joint connector
(CAN1) C-103 and A/C-ECU connector C-109 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 A/C-ECU

connector C-109, and check the wiring harness.

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

C-103 (terminal No.9) and A/C-ECU connector C-109
(terminal No.11)

OK: Continuity exists (2 ohms or less)

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

C-103 (terminal No.22) and A/C-ECU connector C-109
(terminal No.12)

OK: Continuity exists (2 ohms or less)

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

C-103 and A/C-ECU connector C-109 in good condition?
YES : Check the power supply circuit of the A/C-ECU. Refer

to GROUP 55A, Diagnosis

P.55A-63

.

NO : Repair the wiring harness between joint connector

(CAN1) C-103 and A/C-ECU connector C-109.

AC709707

AC709707 MI

Harness side: C-103

Harness side: C-109

Test
harness

Test
harness

AC709707 MJ

Harness side:
C-103

Harness side: C-109

Test
harness

Test
harness