Mitsubishi Outlander XL. Manual - part 1133

Diagnostic
trouble code to
be set

Possible
trouble spot

Logic for narrowing down trouble spot

"Bus

 off"

diagnostic
trouble  code  is
stored  in  ECU
A.
Time-out
diagnostic
trouble  codes
associated  with
ECUs  C  and  D
are  stored  in
ECU  A  and
ECU B.

Trouble

 in

CAN bus line
(d)

If

 time-out

 diagnostic

trouble  codes  associated
with  ECUs  C  and  D  are
stored in ECUs A and B, or
time-out  codes  associated
with  ECUs  A  and  B  are
stored  in  ECUs  C  and  D,
CAN  bus  line  (d)  is
suspected.  CAN  bus  line
(g) or (e) and power supply
systems to ECU C or D are
also  suspected  as  second
cause.

ZC501790008

ECU B

ECU C

ECU D

ECU A

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

ETACS-ECU
(Gateway)

Data link 
connector

Time-out
diagnostic
trouble  codes
associated  with
ECUs  A  and  B
are  stored  in
ECU  C  and
ECU D.
Time-out
diagnostic
trouble  codes
associated  with
ECUs  A,  B,  C
and

 D

 are

stored

 in

ETACS-ECU.

Trouble

 in

CAN bus line
(b)

It must be assumed that a
fault  was  present  in  CAN
bus  line  (b)  when  the
ETACS-ECU  has  set  a
time-out  diagnostic  trouble
code for ECU A, B, C or D.

ZC501790005

ECU B

ECU C

ECU D

ECU A

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

ETACS-ECU
(Gateway)

Data link 
connector

Time-out
diagnostic
trouble  codes
associated  with
ETACS-ECU  is
stored  in  ECU
A,  B,  C  and
ECU D.

DIAGNOSTIC TROUBLE CODE DIAGNOSIS

M15408300045USA0000010000

ON-BOARD DIAGNOSTICS

The CAN is a communication method which the ECUs
use in order to communicate each other. The CAN-
related diagnostic trouble codes will be stored in the
following ECUs, which use the CAN communication.

｠

ETACS-ECU

｠

ECM

｠

TCM

｠

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

｠

AWD-ECU

｠

Steering wheel sensor <vehicles with ASC>

｠

A/C-ECU

CONTROLLER AREA NETWORK (CAN)

54D-15

DIAGNOSTIC TROUBLE CODE DIAGNOSIS

｠

SRS-ECU

｠

Occupant classification-ECU

｠

Hands  free  module  <vehicles  with  hands  free
system>

｠

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>

｠

WCM  <vehicles  without  KOS>  or  KOS-ECU
<vehicles with KOS>

｠

Combination meter

HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)

Required Special Tools:

｠

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: Vehicle Communication Interface (V.C.I.)

｠

MB991827: M.U.T.-III USB Cable

｠

MB991910: M.U.T.-III Main Harness A

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition  switch  to  the  "LOCK"  (OFF)  position  before
connecting or disconnecting scan tool MB991958.

1.

Ensure that the ignition switch is at the "LOCK" (OFF) position.

2.

Start up the personal computer.

3.

Connect special tool MB991827 to special tool MB991824 and
the personal computer.

4.

Connect special tool MB991910 to special tool MB991824.

5.

Connect special tool MB991910 to the data link connector.

6.

Turn the power switch of special tool MB991824 to the "ON"
position.

NOTE: 

When special tool MB991824 is energized, special

tool MB991824 indicator light will be illuminated in a
green color.

7.

Start the scan tool system on the personal computer.

NOTE: 

Disconnecting scan tool MB991958 is the reverse of

the connecting sequence, making sure that the ignition
switch is at the "LOCK" (OFF) position.

HOW TO DIAGNOSE THE CAN BUS LINE

Required Special Tools:

｠

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: Vehicle Communication Interface (V.C.I.)

｠

MB991827: M.U.T.-III USB Cable

｠

MB991910: M.U.T.-III Main Harness A

54D-16

CONTROLLER AREA NETWORK (CAN)

DIAGNOSTIC TROUBLE CODE DIAGNOSIS

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition  switch  to  the  "LOCK"  (OFF)  position  before
connecting or disconnecting scan tool MB991958.

1.

Connect scan tool MB991958 to the data link connector.

2.

Turn the ignition switch to the "ON" position.

3.

Select "CAN Bus Diagnosis" from the start-up screen.

4.

When  the  vehicle  information  is  displayed,  confirm  that  it
matches the vehicle whose CAN bus lines will be diagnosed.

｠

If they match, go to step 8.

｠

If not, go to step 5.

5.

Select the "view vehicle information" button.

6.

Enter the vehicle information and select the "OK" button.

7.

When the vehicle information is displayed, confirm again that
it matches the vehicle whose CAN bus lines will be diagnosed.

｠

If they match, go to step 8.

｠

If not, go to step 5.

8.

Select the "OK" button.

9.

When the optional equipment screen is displayed, choose the
one which the vehicle is fitted with, and then select the "OK"
button.

DIAGNOSIS

CAN BUS DIAGNOSTICS TABLE

M15408300002USA0000010000

A diagnostic trouble code may not also be set in
the CAN-B lines under the conditions below. If no
diagnostic  trouble  code  has  been  set  due  to
electrical  noise,  confirm  diagnostic  item  26  P.
54D-153.

｠

Open  circuit  at  the  CAN_H  side  of  the  CAN-B
bus lines

｠

Open circuit at the CAN_L side of the CAN-B bus
line

｠

Short to ground at the CAN_H side of the CAN-
B bus line

During  diagnosis,  a  diagnostic  trouble  code
associated with another system may be set when

the ignition switch is turned on with connector(s)
disconnected.  After  completing  the  repair,
confirm  all  systems  for  diagnostic  trouble  code
(s).  If  diagnostic  trouble  code(s)  are  set,  erase
them all.
This diagnosis applies only to the CAN bus lines. If a
different  system  is  defective,  proceed  to  the
applicable  diagnosis  section  for  each  system.
Observe  the  diagnosis  procedure  below  only  when
the CAN bus line is defective.

CONTROLLER AREA NETWORK (CAN)

54D-17

DIAGNOSIS

Scan tool screen

Diagnosis detail

Reference
page

(The  ECUs  that  are  not  adopted  are  not
displayed).

Comment

ZC5018550000

: Red section on scree n

M. U.T.

J/C (3)

J/C (2)

SAS

4WD

K OS/WC

M

SRS

OCM

A/C

AUDI O

MMCS

Sat Radio

HFM

METER

ABS/ASC

AT

ENGINE

ETACS

J/C (1)

Short  circuit  to
battery  in  red
displayed  area  is
estimated.

Diagnostic item 1
Diagnose  when  the
scan

 tool

 cannot

receive  the  data  sent
by ETACS-ECU

 P.54D-25

ZC5018550001

: Red section on scree n

M. U.T.

J/C (3)

J/C (2)

SAS

4WD

K OS/WC

M

SRS

OCM

A/C

AUDI O

MMCS

Sat Radio

HFM

METER

ABS/ASC

AT

ENGINE

ETACS

J/C (1)

Grounding  in  red
displayed  area  is
estimated.

Diagnostic item 2
Malfunction  of  the
ETACS-ECU

 P.54D-29

ZC5018550002

: Red section on scree n

M. U.T.

J/C (3)

J/C (2)

SAS

4WD

K OS/WC

M

SRS

OCM

A/C

AUDI O

MMCS

Sat Radio

HFM

METER

ABS/ASC

AT

ENGINE

ETACS

J/C (1)

CAN-C: A bus-off
failure  is  present
in  the  gateway
ECU.

Diagnostic item 3
Abnormal

 short

between  the  CAN-C
bus lines

 P.54D-30

CAN-C:
Grounding  in  red
displayed  area  is
estimated

Diagnostic item 4
Diagnose shorts in the
ground  to  CAN-C  bus
line

 P.54D-41

CAN-C:

 Short

circuit to battery in
red

 displayed

area is estimated

Diagnostic item 5
Diagnose shorts in the
power supply to CAN-
C bus line

 P.54D-53

54D-18

CONTROLLER AREA NETWORK (CAN)

DIAGNOSIS