Mitsubishi Lancer Evolution IX. Manual - part 199

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-55

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 15. Connector check: C-228 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 16.

NO : 

Repair the defective connector.

Step 16. Check the wiring harness between C-228 
ETACS-ECU connector terminal No.59 and E-05 
power window main switch connector terminal 
No.4.

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

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)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-56

NOTE: 

Prior to the wiring harness inspection, check interme-
diate connector C-17 <LH drive vehicles> or C-110 
<RH drive vehicles> and 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 17.

NO : 

Repair the wiring harness.

Step 17. ECU check by using the SWS monitor.
Check that the power supply and earth lines to the 
power window main switch (power window module) 
and the SWS communication lines are normal.

• Ignition switch: ON

ECUS TO BE CHECKED

• P/W MODULE

OK: "OK" is displayed on the "P/W MOD-
ULE" menu.

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 : 

Replace the power window main switch.

AC310447

AF

Connectors: C-17, C-101 <LHD>

C-101 (L)

C-17

C-17

C-101

AC310456

Connector: C-110 <RHD>

AH

AC310456

Connector: C-101 <RHD>

AQ

C-101 (L)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-57

BUZZER

INSPECTION PROCEDURE B-1: Lamp reminder buzzer function does not work normally.

CAUTION

Whenever the ECU is replaced, ensure that the 
input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM

The ETACS-ECU operates this function in accord-
ance with the input signals below.

• Ignition switch (IG1)

• Driver's door switch

• Tail lamp switch

• Headlamp switch

If this function does not work normally, these input 
signal circuit(s) or the ETACS-ECU may be defec-
tive.

POSSIBLE CAUSES

• Malfunction of the driver's door switch

• Malfunction of the column switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

ETACS-ECU

INPUT SIGNAL

· FRONT DOOR SWITCH (RH) <RHD>
· FRONT DOOR SWITCH (LH) <LHD>
· HEADLAMP SWITCH
· IGNITION SWITCH (IG1)
· TAIL LAMP SWITCH

Lamp Reminder Tone Alarm Function

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-58

DIAGNOSIS PROCEDURE

Step 1. ECU check by using the SWS monitor.
Check that the power supply and earth lines to the 
ETACS-ECU and the column switch (column-ECU) 
and the SWS communication lines are normal.

• Ignition switch: OFF

ECUS TO BE CHECKED

• ETACS ECU

• COLUMN ECU

OK: "OK" is displayed for all the items

Q: Is the check result normal?

"OK" is displayed for all the items : 

Go to Step 2.

"NG" is displayed on the "ETACS ECU" menu. : 

Refer to Inspection Procedure A-3 
"Communication with the ETACS-ECU is 
not possible 

P.54C-36

."

"NG" is displayed on the "COLUMN ECU" menu. : 

Refer to Inspection Procedure A-2 
"Communication with the column switch 
(column-ECU) is not possible 

P.54C-30

."

Step 2. Function diagnosis by using the SWS 
monitor.
Check the SWS communication signal, which are 
related to the lamp reminder function.

<Selected item> BUZZER - LGT MONI. ALRM 

• Ignition switch: OFF (key removed)

• lighting switch: HEAD

• Driver's door: open

OK: Normal conditions are displayed for all 
the items.

Q: Is the check result normal?

Normal conditions displayed for all the items : 

Go 

to Step 3.

Normal condition is not displayed for item No.00 or 
No.01 : 

Refer to Inspection Procedure L-4 "The 

column switch (lighting and turn-signal lamp 
switch) signal is not received 

P.54C-267

."

Normal condition is not displayed for item No.30 : 

Refer to Inspection Procedure L-2 "The 
ignition switch (IG1) signal is not received 

P.54C-261

."

Normal condition is not displayed for item No.32 : 

Refer to Inspection Procedure L-3 "The door 
switch (front: LH) signal is not received <LH 
drive vehicles>

P.54C-263

 ," or refer to 

Inspection Procedure L-3 "The door switch 
(front: RH) signal is not received <RH drive 
vehicles>

P.54C-265

 ."

Normal condition is not displayed for item No.43 : 

Replace the ETACS-ECU.

Step 3. Retest the system.
The lamp reminder buzzer function should work nor-
mally.

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 : 

Replace the ETACS-ECU.

Item No. Item name

Normal condition

Item 00

HEADLAMP SW ON when the lighting 

switch is at HEAD

Item 01

TAIL LAMP SW

ON when the lighting 
switch is at TAIL

Item 30

IG SW(IG1)

OFF

Item 32

DR DOOR SW

ON

Item 43

BUZZER

ON