Mitsubishi Outlander (2013+). Manual - part 724

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-32

YES : 

Repair the wiring harness between joint 

connector (CAN-HI) and the SRS-ECU 
connector.

NO : 

Check the SRS-ECU connector, and repair 
if necessary. If the SRS-ECU connector is in 
good condition, go to Step 22.

STEP 22. M.U.T.-III CAN bus diagnostics (retest 
the system)
Diagnose CAN-C, and check if M.U.T.-III screen 
shows normal state.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Check the SRS-ECU connector, and repair 
if necessary. If the SRS-ECU connector is in 
good condition, replace the SRS-ECU.

STEP 23. Check the CAN-C between joint 
connector (CAN-HI) and the diagnosis connector. 
Resistance measurement at joint connector 
(CAN-HI).

CAUTION

A digital multimeter should be used. For details 
refer to 

P.54C-5

.

CAUTION

The test wiring harness should be used. For 
details refer to 

P.54C-5

.

(1) Disconnect joint connector (CAN-HI), and 

measure at the wiring harness side.

CAUTION

When measuring the resistance, disconnect the 
negative battery terminal. For details refer to 

P.54C-5

.

(2) Ensure that the negative battery terminal is 

disconnected.

(3) Resistance between joint connector (CAN-HI) 

terminal No.9 (CAN_H) and body earth

OK: 1 k

Ω or more

(4) Resistance between joint connector (CAN-HI) 

terminal No.20 (CAN_L) and body earth

OK: 1 k

Ω or more

CAUTION

Strictly observe the specified wiring harness 
repair procedure. For details refer to 

P.54C-5

.

Q: Is the check result normal?

YES : 

<1 k

Ω or more> Repair the intermediate 

connector C-126, or the wiring harness 
between joint connector (CAN-HI) and the 
intermediate connector C-126.

NO : 

<Less than 1 k

Ω > Repair the diagnosis 

connector, or the wiring harness between 
joint connector (CAN-HI) and the diagnosis 
connector.

STEP 24. M.U.T.-III CAN bus diagnostics 
[engine-ECU connector disconnected]
(1) Disconnect engine-ECU connector, and diagnose 

by using the M.U.T.-III.

ACC00052

ACC00052

M.U.T.

: Red section on screen

JC

ETACS

KOS

AUDIO

SRS

OSS

ABS/ASC

CVT

ENGINE

EPS

SAS

AWC

MMCS

A/C

ETG

METER

Corner

JC

JC

AB

(2) Diagnose CAN-C, and check if M.U.T.-III screen 

is as shown in the illustration.

Q: Does M.U.T.-III screen correspond to the 

illustration?
YES : 

Go to Step 26.

NO : 

Check the engine-ECU connector, and 
repair if necessary. If the engine-ECU 
connector is in good condition, go to Step 
25.

STEP 25. M.U.T.-III CAN bus diagnostics (retest 
the system)
Diagnose CAN-C, and check if M.U.T.-III screen 
shows normal state.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Check the engine-ECU connector, and 
repair if necessary. If the engine-ECU 
connector is in good condition, replace the 
engine-ECU.

STEP 26. M.U.T.-III CAN bus diagnostics 
[ETACS-ECU connector disconnected]
(1) Disconnect ETACS-ECU connector, and 

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-33

diagnose by using the M.U.T.-III.

ACC00052

ACC00052

M.U.T.

: Red section on screen

JC

ETACS

KOS

AUDIO

SRS

OSS

ABS/ASC

CVT

ENGINE

EPS

SAS

AWC

MMCS

A/C

ETG

METER

Corner

JC

JC

AB

(2) Diagnose CAN-C, and check if M.U.T.-III screen 

is as shown in the illustration.

Q: Does M.U.T.-III screen correspond to the 

illustration?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Check the ETACS-ECU connector, and 
repair if necessary. If the ETACS-ECU 
connector is in good condition, go to Step 
27.

STEP 27. M.U.T.-III CAN bus diagnostics (retest 
the system)
Diagnose CAN-C, and check if M.U.T.-III screen 
shows normal state.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Check the ETACS-ECU connector, and 
repair if necessary. If the ETACS-ECU 
connector is in good condition, replace the 
ETACS-ECU.

Diagnosis Item 4: Diagnose shorts between CAN_H and L lines (CAN-C)

CAUTION

• When servicing a CAN bus line, earth yourself 

by touching a metal object such as an 
unpainted water pipe. If you fail to do, a com-
ponent connected to the CAN bus line may be 
broken.

• When the ETACS-ECU of vehicles without 

KOS is replaced, the encrypted code of the 
ignition key needs to be registered to the 
ETACS-ECU. (If the encrypted code is not reg-
istered, the engine cannot be started. Regis-
ter the encrypted code as described in 
GROUP 54A, Immobilizer System 

− How to 

Register Key ID .)

TROUBLE JUDGEMENT

When all of the following conditions are met, the 
M.U.T.-III determines that a short circuit is present 
between CAN_L and CAN_H lines.

• The M.U.T.-III cannot receive the periodic trans-

mission data from any ECUs.

• The voltage between CAN-C (CAN_L and 

CAN_H lines) is 1.0 V or more, 4.0 V or less.

• The resistance at CAN-C (CAN_L and CAN_H 

lines) is 2 

Ω or less.

TROUBLESHOOTING HINTS

• Malfunction of the wiring harness

• Malfunction of the connector

• Malfunction of the ETACS-ECU

• Malfunction of the SRS-ECU

• Malfunction of the steering wheel sensor

• Malfunction of the 4WD-ECU <4WD>

• Malfunction of the ABS-ECU <vehicles without 

ASC> or ASC-ECU <vehicles with ASC>

• Malfunction of the EPS-ECU

• Malfunction of the CVT-ECU

• Malfunction of the engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. Connector check: C-126 intermediate 
connector

CAUTION

The strand end of the twist wire should be within 
10 cm from the connector. For details refer to 

P.54C-5

.

Q: Is the check result normal?

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-34

YES : 

Go to Step 2.

NO : 

Repair the defective connector.

STEP 2. Resistance measurement at C-126 
intermediate connector.

CAUTION

A digital multimeter should be used. For details 
refer to 

P.54C-5

.

CAUTION

The test wiring harness should be used. For 
details refer to 

P.54C-5

.

(1) Disconnect the connector, and measure at its 

female-side intermediate connector (at the front 
wiring harness side).

(2) Turn the ignition switch to the LOCK (OFF) 

position.

CAUTION

When measuring the resistance, disconnect the 
negative battery terminal. For details refer to 

P.54C-5

.

(3) Ensure that the negative battery terminal is 

disconnected.

(4) Resistance between C-126 intermediate 

connector terminal Nos.15 and 16

OK: 120 

± 20 Ω

Q: Is the check result normal?

YES : 

<Within 120 

± 20 Ω> Go to Step 12.

NO : 

<Not within 120 

± 20 Ω> Go to Step 3.

STEP 3. Connector check: joint connector 
(CAN1)

CAUTION

The strand end of the twist wire should be within 
10 cm from the connector. For details refer to 

P.54C-5

.

AC209350

1

12

2

13

3

14

4

15

5

16

6

17

7

18

8

19

9

20

10

21

11

22

AC209350

1

12

2

13

3

14

4

15

5

16

6

17

7

18

8

19

9

20

10

21

11

22

AC

Short pin

When checking the joint connector, ensure that its 
wiring harness side and its short pins are not dam-
aged.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair a defective connector or replace the 
joint connector.

STEP 4. Resistance measurement at joint 
connector (CAN1).

CAUTION

A digital multimeter should be used. For details 
refer to 

P.54C-5

.

CAUTION

The test wiring harness should be used. For 
details refer to 

P.54C-5

.

(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Turn the ignition switch to the LOCK (OFF) 

position.

CAUTION

When measuring the resistance, disconnect the 
negative battery terminal. For details refer to 

P.54C-5

.

(3) Ensure that the negative battery terminal is 

disconnected.

(4) Resistance between joint connector (CAN1) 

terminal Nos.10 and 21

OK: 120 

± 20 Ω

CAUTION

Strictly observe the specified wiring harness 
repair procedure. For details refer to 

P.54C-5

.

Q: Is the check result normal?

YES : 

<Within 120 

± 20 Ω> Go to Step 6.

NO : 

<Not within 120 

± 20 Ω> Go to Step 5.

STEP 5. Resistance measurement at engine-ECU 
connector.

CAUTION

A digital multimeter should be used. For details 
refer to 

P.54C-5

.

(1) Remove the engine-ECU, and measure at the 

equipment side.

(2) Resistance between engine-ECU connector 

terminal Nos.90 and 91

OK: 120 

± 20 Ω

CAUTION

Strictly observe the specified wiring harness 
repair procedure. For details refer to 

P.54C-5

.

Q: Is the check result normal?

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-35

YES : 

<Within 120 

± 20 Ω> Repair the wiring 

harness between joint connector (CAN1) 
and the engine-ECU connector.

NO : 

<Not within 120 

± 20 Ω> Check the 

engine-ECU connector, and repair if 
necessary. If the engine-ECU connector is 
in good condition, replace the engine-ECU.

STEP 6. Resistance measurement at joint 
connector (CAN1).

CAUTION

A digital multimeter should be used. For details 
refer to 

P.54C-5

.

CAUTION

The test wiring harness should be used. For 
details refer to 

P.54C-5

.

(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Turn the ignition switch to the LOCK (OFF) 

position.

CAUTION

When measuring the resistance, disconnect the 
negative battery terminal. For details refer to 

P.54C-5

.

(3) Ensure that the negative battery terminal is 

disconnected.

(4) Resistance between joint connector (CAN1) 

terminal Nos.6 and 17

OK: 1 k

Ω or more

CAUTION

Strictly observe the specified wiring harness 
repair procedure. For details refer to 

P.54C-5

.

Q: Is the check result normal?

YES : 

<1 k

Ω or more> Go to Step 8.

NO : 

<Less than 1 k

Ω> Go to Step 7.

STEP 7. Resistance measurement at CVT-ECU 
connector.

CAUTION

A digital multimeter should be used. For details 
refer to 

P.54C-5

.

(1) Remove the CVT-ECU, and measure at the 

equipment side.

(2) Resistance between CVT-ECU connector 

terminal Nos.4 and 5

OK: 1 k

Ω or more

CAUTION

Strictly observe the specified wiring harness 
repair procedure. For details refer to 

P.54C-5

.

Q: Is the check result normal?

YES : 

<1 k

Ω or more> Check intermediate 

connector, and repair if necessary. If the 
intermediate connector is in good condition, 
repair the wiring harness between joint 
connector (CAN1) and the CVT-ECU 
connector.

NO : 

<Less than 1 k

Ω> Check the CVT-ECU 

connector, and repair if necessary. If the 
CVT-ECU connector is in good condition, 
replace the CVT-ECU.

STEP 8. Resistance measurement at joint 
connector (CAN1).

CAUTION

A digital multimeter should be used. For details 
refer to 

P.54C-5

.

CAUTION

The test wiring harness should be used. For 
details refer to 

P.54C-5

.

(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Turn the ignition switch to the LOCK (OFF) 

position.

CAUTION

When measuring the resistance, disconnect the 
negative battery terminal. For details refer to 

P.54C-5

.

(3) Ensure that the negative battery terminal is 

disconnected.

(4) Resistance between joint connector (CAN1) 

terminal Nos.8 and 19

OK: 1 k

Ω or more

CAUTION

Strictly observe the specified wiring harness 
repair procedure. For details refer to 

P.54C-5

.

Q: Is the check result normal?

YES : 

<1 k

Ω or more> Go to Step 10.

NO : 

<Less than 1 k

Ω> Go to Step 9.

STEP 9. Resistance measurement at EPS-ECU 
connector.

CAUTION

A digital multimeter should be used. For details 
refer to 

P.54C-5

.

(1) Remove the EPS-ECU, and measure at the 

equipment side.

(2) Resistance between EPS-ECU connector