Mitsubishi Outlander XL. Manual - part 1130

GENERAL INFORMATION

M15408300100USA0000010000

CAN, an abbreviation for Controller Area Network, is
an  ISO-certified  international  standard  for  a  serial
multiplex communication protocol*. A communication
circuit  employing  the  CAN  protocol  connects  each
electric control module (ECU), and sensor data can
be shared among, which enables more reduction in
wiring.

NOTE: 

 *: The regulations have been decided in

detail, from software matters such as the
necessary transmission rate for communication,
the system, data format, and communication timing
control method to hardware matters such as the
harness type and length and the resistance values.

CAN offers the following advantages.

｠

Transmission rates are much faster than those in
conventional  communication  (up  to  1  Mbps),
allowing much more data to be sent.

｠

It  is  exceptionally  immune  to  noise,  and  the  data
obtained from each error detection device is more
reliable.

｠

Each ECU connected via the CAN communicates
independently,  therefore  if  the  ECU  enters
damaged mode, communications can be continued
in some cases.

CONTROLLER AREA NETWORK (CAN)

54D-3

GENERAL INFORMATION

STRUCTURE

ZC5017670000

Engine control 
module

4WD-ECU

SRS-ECU

A/C-ECU

Hands free 
module

Satellite 
radio tuner

Combination 
meter

   

Wireless control module or 
KOS-ECU

Scan tool

Data link 
connector

ETACS-ECU

Steering 
wheel 
sensor

ABS-ECU or 
ASC-ECU

Transmissio n
control 
module

CAN_H

CAN_L

Main bus line

CAN_H

CAN_L

CAN_H

CAN_L

CAN-C

CAN-B

Diagnosis CAN-C

Terminal resistor

Terminal 
resistor

: indicates  main bus line

: indicates  sub bus line

Occupant 
classification- 
ECU

Main bus line

｠

With OUTLANDER, for the first time with MMC, a
gateway  function  has  been  integrated  to  ETACS-
ECU as the network central ECU. (Refer to GROUP
54Ad, ETACS-ECU P.54Ad-3.)

｠

The  CAN  system  consists  of  the  following  three
networks:  CAN-B  (middle-speed  body  network),
CAN-C (high-speed power train network), and the
diagnosis  CAN-C  (diagnosis  exclusive  network).
Each  ECU  is  connected  to  one  of  the  networks
depending on its functions.

｠

The CAN bus line consists of two lines, CAN_L and
CAN_H (CAN Low and CAN High, respectively), as
well as two terminal resistors (A twisted-pair cable,
highly  resistant  to  noise,  is  used  for  the
communications line).

｠

The CAN bus line connecting two dominant ECUs
is  the  main  bus  line,  and  the  CAN  bus  line
connecting each ECU is the sub-bus line.

54D-4

CONTROLLER AREA NETWORK (CAN)

GENERAL INFORMATION

｠

With CAN-C, the terminal resistors are incorporated
in ECU. Resistors with approximately 120 ohms is
used  for  the  dominant  ECU,  and  that  with  4.7
kiloohms is used for the non-dominant ECU.

NOTE:

｠

Dominant ECU: ETACS-ECU and engine ECU

｠

Non-dominant ECU: ECU and sensor on CAN-C
network,  excluding  ETACS-ECU  and  engine
ECU

｠

To the CAN bus line, ECU, sensor, and data link
connector  are  connected  as  follows  for  each
network.

CAN-B

｠

A/C-ECU

｠

SRS-ECU

｠

Occupant classification-ECU

｠

Hands free module

｠

Radio and CD player or CD changer <vehicles
without

 Mitsubishi

 Multi-Communication

System  (MMCS)>  or  CAN  box  unit  <vehicles
with  Mitsubishi  Multi-Communication  System
(MMCS)>

｠

Satellite radio tuner <vehicles satellite radio>

｠

Wireless  control  module  (WCM)  <vehicles
without  KOS>  or  KOS-ECU  <vehicles  with
KOS>

｠

Combination meter

CAN-C

｠

AWD-ECU

｠

Steering wheel sensor <vehicles with ASC>

｠

ABS-ECU  <vehicles  without  ASC>  or  ASC-
ECU <vehicles with ASC>

｠

Transaxle control module (TCM)

｠

Engine control module (ECM)

DIAGNOSIS CAN-C

｠

Data link connector

CONTROLLER AREA NETWORK (CAN)

54D-5

SPECIAL TOOL

SPECIAL TOOL

M15408300042USA0000010000

Tool

Tool  number  and
name

Supersession

Application

MB991910

MB991826

YB9919580000

MB991911

MB991914

MB991824

MB991827

MB991825

Do not use

Do not use

a

b

c

d

e

f

g

MB991958

a.

MB991824

b.

MB991827

c.

MB991910

d.

MB991911

e.

MB991914

f.

MB991825

g.

MB991826

M.U.T.-III

 sub

assembly

a.

Vehicle
communication
interface (V.C.I.)

b.

M.U.T.-III

 USB

cable

c.

M.U.T.-III

 main

harness

 A

(Vehicles

 with

CAN
communication
system)

d.

M.U.T.-III

 main

harness

 B

(Vehicles  without
CAN
communication
system)

e.

M.U.T.-III

 main

harness  C  (for
Daimler  Chrysler
models only)

f.

M.U.T.-III
measurement
adapter

g.

M.U.T.-III  trigger
harness

MB991824-KIT

NOTE: 

G: MB991826

M.U.T.-III Trigger
Harness is not
necessary when
pushing V.C.I. ENTER
key.

M.U.T.-III  main  harness  A
(MB991910)  should  be  used.
M.U.T.-III main harness B and C
should  not  be  used  for  this
vehicle.
CAN bus diagnostics

54D-6

CONTROLLER AREA NETWORK (CAN)

SPECIAL TOOL