Mitsubishi Outlander XL. Manual - part 1159

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Check the wiring harness between joint connector (CAN1)
C-103  (terminal  No.20)  and  hands  free  module  connector
C-121 (terminal No.16)

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

C-103 and hands free module connector C-121 in good

condition?

YES:

 Check the power supply circuit of the hands free

module. Refer to Group 54Ae, Hands-free cellular phone
system - Diagnosis P.54Ae-33.

NO:

 Repair the wiring harness between joint connector

(CAN1) C-103 and hands free module connector C-121.

DIAGNOSTIC ITEM 24: Short to power supply or ground in both CAN_H and CAN_L
lines.

M15408300034USA0000010000

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.

CONTROLLER AREA NETWORK (CAN)

54D-119

DIAGNOSIS

CAN Communication Circuit

ETACS-ECU

INTERFACE
CIRCUIT

CAN DRIVE
CIRCUIT

A/C-ECU

COMBINATION
METER

SRS-ECU

WCM

KOS-ECU

NOTE

VEHICLES WITH WCM
VEHICLES WITH KOS

CAN DRIVE
CIRCUIT

CAN DRIVE
CIRCUIT

CAN DRIVE
CIRCUIT

JOINT CONNECTOR
(CAN1)

54D-120

CONTROLLER AREA NETWORK (CAN)

DIAGNOSIS

CAN Communication Circuit

ETACS-ECU

INTERFACE
CIRCUIT

INTERFACE
CIRCUIT

CAN DRIVE
CIRCUIT

HANDS FREE
MODULE

OCCUPANT 
CLASSIFICATION-
ECU

SATELLITE
RADIO 
TUNER

RADIO AND CD
PLAYER OR CD
CHANGER

NOTE

VEHICLES WITHOUT MITSUBISHI MULTI-COMMUNICATION SYSTEM (MMCS)
VEHICLES WITH MITSUBISHI MULTI-COMMUNICATION SYSTEM (MMCS)

CAN
TRANSCEIVER
CIRCUIT

CAN BOX UNIT

JOINT CONNECTOR
(CAN1)

CONTROLLER AREA NETWORK (CAN)

54D-121

DIAGNOSIS

ZC6008750013

Connectors: C-03, C-29, C-31, C-102, C-103

C-31

C-102

C-102

C-29

C-03

ZC6008760007

Connectors: C-13, C-16, C-17, C-28, C-109, 

C-111, C-121

C-111

C-109 (B)

C-13

C-16 or 
C-17

C-121

C-28 (Y)

 

ZC6008780000

Connector: C-301

ZC6008790000

Connector: D-34

 

FUNCTION
If a short to power supply or ground is present in both
CAN_H and CAN_L lines, this diagnosis result will be
set.

TROUBLE JUDGEMENT CONDITIONS
If a communication flag is set for the ETACS-ECU, no
communication  is  present  through  the  CAN-B  line,
and diagnostic trouble code U0019 is set, the ETACS-
ECU determines that there is a failure.

TROUBLESHOOTING HINTS

｠

Malfunction  of  the  connector  (ETACS-ECU
connector improperly connected)

｠

Malfunction  of  the  wiring  harness  (CAN_H  and
CAN_L lines are short to power supply or ground on
the CAN-B line.)

｠

Malfunction of ECUs

DIAGNOSIS

Required Special Tools:

｠

MB991223: Harness Set

｠

MB992006: Extra Fine Probe

STEP 1. Check the wiring harness between ETACS-ECU
connector C-301 and body ground for a short to power
supply. Measure the voltage at ETACS-ECU connector
C-301.

A digital multimeter should be used. For details refer to P.
54D-8.

54D-122

CONTROLLER AREA NETWORK (CAN)

DIAGNOSIS