Mitsubishi Outlander (2003+). Manual - part 440

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-49

COMMENTS ON TROUBLE SYMPTOM
It is suspected that the power supply circuit to the 
ETACS-ECU is defective, or the wiring harness 
between the diagnosis connector and the 
ETACS-ECU or their connector(s) is damaged.
NOTE: If the wiring harness between the 
ETACS-ECU and body earth is defective, also check 
C-217 ETACS-ECU connector terminal No.3, and 
repair if necessary.

POSSIBLE CAUSES

•

Malfunction of the ETACS-ECU

•

Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. Check that the MUT-II/III communicates 
with the other systems.

Use the MUT-II/III to confirm that it communicates 
with the engine-ECU.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Diagnose the engine control system by 
referring to 

P.13B-285

 <4G63> or 

P.13A-190

 <4G69>.

Step 2. Check that the MUT-II/III can 
communicate with the system.

When the ignition switch is turned ON, check if the 
MUT-II/III can communicate with the system.

Q: Is the check result normal?

YES : 

Refer to inspection procedure A-2 "Check 

the ETACS-ECU battery power supply 
circuit" 

P.54B-52

.

NO : 

Go to Step 3.

ETACS-
ECU

DIAGNOSIS
CONNECTOR

DIAGNOSIS
CONNECTOR

FRONT SIDE

FRONT SIDE

Wire colour code
B : Black     LG : Light green     G : Green     L : Blue     
W : White     Y : Yellow     SB : Sky blue     BR : Brown     
O : Orange     GR : Gray     R : Red     P : Pink     V : Violet   

MUT-II Communication and ETACS-ECU Ground Circuit <RHD>

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-50

Step 3. Connector check: C-219 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the defective connector.

Step 4. Measure the resistance at the C-219 
ETACS-ECU connector.

(1) Disconnect the connector, and measure at the 

junction block side.

(2) Resistance between C-219 ETACS-ECU 

connector terminal No.56 and body earth

OK: 2 

Ω

 or less

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Go to Step 5.

Step 5. Check the wiring harness between C-219 
ETACS-ECU connector terminal No.56 and body 
earth.

•

Check the earth wires for open circuit.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

−

 How to 

Cope with Intermittent Malfunction 

P.00-6

).

NO : 

Repair the wiring harness.

AC308722

Connector: C-219

Junction block (Rear view)

Junction block side

AB

<LHD>

68

74

63

66

72

73

67

6564

61

70

71

62

69

60

57

58

59

5655

52

54 53

51

C-219 (GR)

AC308776

Connector: C-219

Junction block (Rear view)

Junction block side

AB

<RHD>

68

74

63

66

72

73

67

6564

61

70

71

62

69

60

57

58

59

5655

52

54 53

51

C-219 (GR)

AC308722

Connector: C-219

Junction block (Rear view)

Junction block side

AB

<LHD>

68

74

63

66

72

73

67

6564

61

70

71

62

69

60

57

58

59

5655

52

54 53

51

C-219 (GR)

AC308776

Connector: C-219

Junction block (Rear view)

Junction block side

AB

<RHD>

68

74

63

66

72

73

67

6564

61

70

71

62

69

60

57

58

59

5655

52

54 53

51

C-219 (GR)

AC301541AY

Connector C-219
(Harness side)

68

74

63

66

72

73

67

6564

61

70

71

62

69

60

57

58

59

5655

52

54 53

51

AC308722

Connector: C-219

Junction block (Rear view)

Junction block side

AB

<LHD>

68

74

63

66

72

73

67

6564

61

70

71

62

69

60

57

58

59

5655

52

54 53

51

C-219 (GR)

AC308776

Connector: C-219

Junction block (Rear view)

Junction block side

AB

<RHD>

68

74

63

66

72

73

67

6564

61

70

71

62

69

60

57

58

59

5655

52

54 53

51

C-219 (GR)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-51

Step 6. Connector check: C-24 diagnosis 
connector

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the defective connector.

Step 7. Check the wiring harness from C-219 
ETACS-ECU connector terminal Nos. 51 and 67 to 
C-24 diagnosis connector terminal Nos. 9 and 1.

•

Check the communication lines for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair the wiring harness.

AC308716

AB

C-24(B)

1
9 10

2

4

12

11

3

13

5

7

15

14

6

16

8

Connector: C-24

Harness side

<LHD>

AC308769

AB

C-24(B)

1
9 10

2

4

12

11

3

13

5

7

15

14

6

16

8

Connector: C-24

Harness side

<RHD>

AC308716

AB

C-24(B)

1
9 10

2

4

12

11

3

13

5

7

15

14

6

16

8

Connector: C-24

Harness side

<LHD>

AC308769

AB

C-24(B)

1
9 10

2

4

12

11

3

13

5

7

15

14

6

16

8

Connector: C-24

Harness side

<RHD>

AC308722

Connector: C-219

Junction block (Rear view)

Junction block side

AB

<LHD>

68

74

63

66

72

73

67

6564

61

70

71

62

69

60

57

58

59

5655

52

54 53

51

C-219 (GR)

AC308776

Connector: C-219

Junction block (Rear view)

Junction block side

AB

<RHD>

68

74

63

66

72

73

67

6564

61

70

71

62

69

60

57

58

59

5655

52

54 53

51

C-219 (GR)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-52

Step 8. Retest the system.

Check whether the communication with the MUT-II/III 
is possible.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

−

 How to 

Cope with Intermittent Malfunction 

P.00-6

).

NO : 

Replace the ETACS-ECU.

INSPECTION PROCEDURE A-2: When the ignition switch is at the LOCK (OFF) position, the functions 
do not work normally. Check the battery power supply circuit to the ETACS-ECU.

CAUTION

Whenever the ECU is replaced, ensure that the 
power supply circuit and the earthing circuit are 
normal.

BATTERY

RELAY
BOX

ETACS-ECU

Wire colour code
B : Black     LG : Light green
G : Green     L : Blue      
W : White     Y : Yellow
SB : Sky blue     BR : Brown 
O : Orange     GR : Gray  
R : Red     P : Pink     V : Violet       

ETACS-ECU Power Supply Circuit <LHD>