Mitsubishi Lancer Evolution IX. Manual - part 114

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-19

Step 5. Resistance measurement at the C-206 
column switch connector

(1) Disconnect the column switch connector, and 

measure at the wiring harness side.

(2) Resistance between C-206 column switch 

connector terminal No.4 and body earth

OK: 2 

Ω or less

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Go to Step 6.

Step 6. Check the wiring harness between C-206 
column switch connector terminal No.4 and the 
body earth.

NOTE: 

Prior to the wiring harness inspection, check joint 
connector C-06, and repair if necessary.

• Check the earth wires for open circuit.

AC310479

AD

Connector: C-206 <LHD>

Harness side

AC310481AD

Connector: C-206 <RHD>

Harness side

AC310506AK

Connector C-206 
(Harness side)

10

5

6

7

9 8

3

4

2 1

AC310479

AD

Connector: C-206 <LHD>

Harness side

AC310481AD

Connector: C-206 <RHD>

Harness side

AC310452

Connector: C-06 <LHD>

AB

C-06 (GR)

AC310456

Connector: C-06 <RHD>

AB

C-06 (GR)

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-20

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.00-5

).

NO : 

Repair the wiring harness.

Step 7. Connector check: C-228 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair the defective connector.

Step 8. Check the wiring harness from C-228 
ETACS-ECU connector terminal Nos.59 and 68 to 
C-206 column switch connector terminal Nos.3 
and 2.

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

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-21

NOTE: 

Prior to the wiring harness inspection, check joint 
connector C-101, and repair if necessary.

• Check the communication lines for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair the wiring harness.

Step 9. Check whether the diagnosis code is 
reset.
Replace the column switch, and then check that the 
diagnosis code is not reset.
(1) Replace the column switch.
(2) Ignition switch: ON
(3) On completion, check that diagnosis code No.12 

is not reset.

Q: Is diagnosis code No.12 set?

YES : 

Replace the ETACS-ECU.

NO : 

The procedure is complete.

AC310446

Connector: C-101 <LHD>

AW

C-101 (L)

AC310456

Connector: C-101 <RHD>

AQ

C-101 (L)

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-22

Diagnosis code 13: Trouble related to the front-ECU or improper connection to the ETACS-ECU

CAUTION

Whenever the ECU is replaced, ensure that the 

power supply circuit, the earthing circuit and the 

communication circuit are 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

IGNITION
SWITCH (IG2)

ETACS-ECU

POWER
SOURCE

FRONT-ECU

BATTERY

RELAY
BOX

NOTE

: LHD
: RHD

Front-ECU Power Supply and SWS Communication Circuit