Mitsubishi Outlander GS45X. Manual - part 1293

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-117

.

FUNCTION

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

.

TROUBLE JUDGMENT CONDITIONS

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

.

TROUBLESHOOTING HINTS

• Malfunction of the connector [joint connector 

(CAN1), SRS-ECU connector improperly con-
nected]

• Malfunction of the wiring harness [open circuit 

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

• Malfunction of the SRS-ECU

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

STEP 1. Check joint connector (CAN1) C-103 and SRS-ECU 
connector C-28 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 SRS-ECU 

connector C-28 in good condition?
YES : Go to Step 2.
NO :  Repair the damaged parts.

AC901076

C-28 (Y)

AB

Connector: C-28

AC901075AX

Connector: C-103

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-118

STEP 2. Check the wiring harness between joint connector 
(CAN1) C-103 and SRS-ECU connector C-28 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 SRS-ECU 

connector C-28, and check the wiring harness.

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

C-103 (terminal No.2) and SRS-ECU connector C-28 
(terminal No.15)

OK: Continuity exists (2 ohms or less)

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

C-103 (terminal No.13) and SRS-ECU connector C-28 
(terminal No.16)

OK: Continuity exists (2 ohms or less)

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

C-103 and SRS-ECU connector C-28 in good condition?
YES : Check the power supply circuit of the SRS-ECU. 

Refer to GROUP 52B, SRS 

− Troubleshooting 

P.52B-409

.

NO :  Repair the wiring harness between joint connector 

(CAN1) C-103 and SRS-ECU connector C-28.

AC709707

AC709707 NQ

Harness side: C-103

Harness side: C-28

Test 
harness

Test harness

AC709707

AC709707 NR

Harness side: C-103

Harness side: C-28

Test 
harness

Test harness

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-119

DIAGNOSTIC ITEM 19: Diagnose when the scan tool cannot receive the data sent by occupant 
classification-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

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-120

.

FUNCTION

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

.

TROUBLE JUDGMENT CONDITIONS

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

.

TROUBLESHOOTING HINTS

• Malfunction of the connector [joint connector 

(CAN1), occupant classification-ECU connector 
improperly connected]

• Malfunction of the wiring harness [open circuit 

between the occupant classification-ECU con-
nector and the joint connector (CAN1), power 
supply circuit to the occupant classification-ECU]

• Malfunction of the occupant classification-ECU

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

STEP 1. Check joint connector (CAN1) C-103, occupant 
classification-ECU connector D-34-2, front seat assembly 
(LH) connector D-34 and intermediate connector C-31 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, occupant 

classification-ECU connector D-34-2, front seat 
assembly (LH) connector D-34 and intermediate 
connector C-31 in good condition?
YES : Go to Step 2.
NO :  Repair the damaged parts.

AC901075 AY

Connectors: C-31, C-103

C-31

C-103

AC901079AX

Connectors: D-34, D-34-2

D-34, 
D-34-2