Mitsubishi Outlander GS45X. Manual - part 1291

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-109

STEP 2. Check the wiring harness between joint connector 
(CAN1) C-103 and combination meter connector C-03 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 combination 

meter connector C-03, and check the wiring harness.

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

C-103 (terminal No.4) and combination meter connector 
C-03 (terminal No.14)

OK: Continuity exists (2 ohms or less)

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

C-103 (terminal No.15) and combination meter connector 
C-03 (terminal No.15)

OK: Continuity exists (2 ohms or less)

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

C-103 and combination meter connector C-03 in good 
condition?
YES : Check the power supply circuit of the combination 

meter. Refer to GROUP 54A, Combination meter 

− 

Diagnosis 

P.54A-69

.

NO :  Repair the wiring harness between joint connector 

(CAN1) C-103 and combination meter connector 
C-03.

AC709707

AC709707 NU

Harness side: C-103

Harness side: C-03

Test harness

Test harness

AC709707NV

Harness side: C-103

Harness side: C-03

Test harness

Test 
harness

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-110

DIAGNOSTIC ITEM 16: Diagnose when the scan tool cannot receive the data sent by KOS-ECU 
<vehicles with KOS>.

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 con-
nected 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-111

.

FUNCTION

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

.

TROUBLE JUDGMENT CONDITIONS

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

.

TROUBLESHOOTING HINTS

• Malfunction of the connector [joint connector 

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

• Malfunction of the wiring harness [open circuit 

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

• Malfunction of the KOS-ECU

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

STEP 1. Check joint connector (CAN1) C-103 and 
KOS-ECU connector C-102 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 KOS-ECU 

connector C-102 in good condition?
YES : Go to Step 2.
NO :  Repair the damaged parts.

AC901075AV

Connectors: C-102, C-103

C-102

C-103

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-112

STEP 2. Check the wiring harness between joint connector 
(CAN1) C-103 and KOS-ECU connector C-102 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 KOS-ECU 

connector C-102, and check the wiring harness.

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

C-103 (terminal No.8) and KOS-ECU connector C-102 
(terminal No.1)

OK: Continuity exists (2 ohms or less)

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

C-103 (terminal No.21) and KOS-ECU connector C-102 
(terminal No.2)

OK: Continuity exists (2 ohms or less)

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

C-103 and KOS-ECU connector C-102 in good 
condition?
YES : Check the power supply circuit of the KOS-ECU. 

Refer to GROUP 42B, KOS-ECU 

− Diagnosis 

P.42B-128

.

NO :  Repair the wiring harness between joint connector 

(CAN1) C-103 and KOS-ECU connector C-102.

AC709707 LY

Harness side: C-103

Harness side: C-102

Test harness

Test harness

AC709707 LZ

Harness side: C-103

Harness side: C-102

Test harness

Test 
harness