Mitsubishi Outlander GS45X. Manual - part 1295

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-125

DIAGNOSTIC ITEM 21: Diagnose when the scan tool cannot receive the data sent by radio and CD 
player <vehicles with radio and CD player> or radio and CD changer <vehicles with radio and CD 
changer>.

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-126

.

FUNCTION

If the scan tool MB991958 cannot communicate with 
the radio and CD player or radio and CD changer, 
this diagnosis result will be set.

.

TROUBLE JUDGMENT CONDITIONS

If a communication flag is not set for the radio and 
CD player or radio and CD changer, the ETACS-ECU 
determines that there is a failure.

.

TROUBLESHOOTING HINTS

• Malfunction of the connector [joint connector 

(CAN1), radio and CD player or radio and CD 
changer connector improperly connected]

• Malfunction of the wiring harness [open circuit 

between the radio and CD player or radio and CD 
changer connector and the joint connector 
(CAN1), power supply circuit to the radio and CD 
player or radio and CD changer]

• Malfunction of the radio and CD player or radio 

and CD changer

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

STEP 1. Check joint connector (CAN1) C-103 and radio and 
CD player or radio and CD changer connector C-16 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 radio and CD 

player or radio and CD changer connector C-16 in good 
condition?
YES : Go to Step 2.
NO :  Repair the damaged parts.

AC901076AM

Connector: C-16

C-16

AC901075AX

Connector: C-103

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-127

STEP 2. Check the wiring harness between joint connector 
(CAN1) C-103 and radio and CD player or radio and CD 
changer connector C-16 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 radio and CD 

player or radio and CD changer connector C-16, and check 
the wiring harness.

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

C-103 (terminal No.10) and radio and CD player or radio 
and CD changer connector C-16 (terminal No.23)

OK: Continuity exists (2 ohms or less)

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

C-103 (terminal No.23) and radio and CD player or radio 
and CD changer connector C-16 (terminal No.33)

OK: Continuity exists (2 ohms or less)

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

C-103 and radio and CD player or radio and CD changer 
connector C-16 in good condition?
YES : Check the power supply circuit of the radio and CD 

player or radio and CD changer. Refer to GROUP 
54A, Radio and CD player 

− Troubleshooting 

P.54A-363

.

NO :  Repair the wiring harness between joint connector 

(CAN1) C-103 and radio and CD player or radio and 
CD changer connector C-16.

AC709707

AC709707 MK

Harness side: C-103

Test 
harness

Harness side: C-16

Test harness

AC709707 ML

Harness side: C-103

Harness side: C-16

Test 
harness

Test harness

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-128

DIAGNOSTIC ITEM 22: Diagnose when the scan tool cannot receive the data sent by CAN box unit 
<vehicles with MMCS>.

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