Mitsubishi Lancer Evolution IX. Manual - part 116

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-27

DIAGNOSTIC PROCEDURE

Step 1. Connector check: A-11X front-ECU 

connector, C-206 column switch connector, 

C-228 ETACS-ECU connector and E-05 power 

window main switch connector

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the defective connector.

AC310572AC

Connector: A-11X

Relay box side

Battery

29

31 30

28 27

25

26

24

21

22

23

AC310479

AD

Connector: C-206 <LHD>

Harness side

AC310481AD

Connector: C-206 <RHD>

Harness side

AC310450

Connector: C-228 <LHD>

AC

Junction block (rear view)

C-228 (GR)

Harness side

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

AC310461

Junction block (rear view)

Connector: C-228 <RHD>

AC

Harness side

C-228 (GR)

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

AC310484

Connector: E-05 <LHD>

AD

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

Front door (LH)

AC310493

Connector: E-05 <RHD>

AG

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

Front door (RH)

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-28

Step 2. Check the wiring harness from each of 
A-11X front-ECU connector terminal No.22, C-206 
column switch connector terminal No.3 and E-05 
power window main switch connector terminal 
No.4 to C-228 ETACS-ECU connector terminal 
No.59.

AC310572AC

Connector: A-11X

Relay box side

Battery

29

31 30

28 27

25

26

24

21

22

23

AC310479

AD

Connector: C-206 <LHD>

Harness side

AC310481AD

Connector: C-206 <RHD>

Harness side

AC310450

Connector: C-228 <LHD>

AC

Junction block (rear view)

C-228 (GR)

Harness side

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

AC310461

Junction block (rear view)

Connector: C-228 <RHD>

AC

Harness side

C-228 (GR)

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

AC310484

Connector: E-05 <LHD>

AD

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

Front door (LH)

AC310493

Connector: E-05 <RHD>

AG

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

Front door (RH)

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-29

NOTE: 

Prior to the wiring harness inspection, check joint 
connector C-101 and intermediate connector C-17 
<LH drive vehicles> or C-110 <RH drive vehicles>, 
and repair if necessary.

• Check the communication lines for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the wiring harness.

Step 3. Check the wiring harness between C-206 
column switch connector terminal No.2 and 
C-228 ETACS-ECU connector terminal No.68.

• Check the communication lines for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the wiring harness.

AC310447

AF

Connectors: C-17, C-101 <LHD>

C-101 (L)

C-17

C-17

C-101

AC310456

Connector: C-101 <RHD>

AQ

C-101 (L)

AC310456

Connector: C-110 <RHD>

AH

AC310479

AD

Connector: C-206 <LHD>

Harness side

AC310481AD

Connector: C-206 <RHD>

Harness side

AC310450

Connector: C-228 <LHD>

AC

Junction block (rear view)

C-228 (GR)

Harness side

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

AC310461

Junction block (rear view)

Connector: C-228 <RHD>

AC

Harness side

C-228 (GR)

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-30

Step 4. Check whether the diagnosis code is 
reset.
When A-11X front-ECU connector is disconnected, 
check that diagnosis code No.21 is not reset. How-
ever, diagnosis code No.13 will be set at this time.

Q: Is diagnosis code No.21 set?

YES : 

Replace the front-ECU.

NO : 

Go to Step 5.

Step 5. Check whether the diagnosis code is 
reset.
When E-05 power window main switch connector is 
disconnected, check that diagnosis code No.21 is 
not reset.

Q: Is diagnosis code No.21 set?

YES : 

Replace the power window main switch.

NO : 

Go to Step 6.

Step 6. Check that the hazard warning lamps 
illuminate.
When the ignition switch is turned to the LOCK 
(OFF) position, check if the hazard warning lamps 
illuminate.

Q: Is the check result normal?

YES : 

Refer to diagnosis code No.12 "Trouble 

related to the column switch or improper 
connection to the ETACS-ECU 

P.54B-16

."

NO : 

Refer to inspection procedure A-2 "Check 
the battery power supply circuit to the 
ETACS-ECU 

P.54B-42

."

Diagnosis code 31: Open circuit in the signal line between the SRS-ECU and the ETACS-ECU (impact 
detection signal) 

 

Diagnosis code 32: Short circuit in the signal line between the SRS-ECU and the ETACS-ECU (impact 
detection signal)

CAUTION

Whenever the ECU is replaced, ensure that the 
input signal circuit is normal.

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

SRS-ECU

ETACS-ECU

CRASH DETECTION
DOOR UNLOCK
SIGNAL PROCESS CIRCUIT