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