Mitsubishi Lancer Evolution IX. Manual - part 183

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-295

Step 6. Check the wiring harness from E-12 door 
lock key cylinder switch connector terminal 
Nos.1 and 3 <LHD> or 3 and 1 <RHD> to C-227 
ETACS-ECU connector terminal Nos.33 and 34.

NOTE: 

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

• Check the input line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

Step 7. Retest the system.
Check that the door lock key cylinder switch signal is 
received normally.

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Cope with Intermittent 

Malfunction 

P.00-5

).

NO : 

Replace the ETACS-ECU.

AC310450

Connector: C-227

AG

Junction block 
(rear view)

Harness side

<LHD>

28

37

43

29

44

38

23

32

41

24

25

26

27

34

42

36 35

33

21

22

30

39

40

31

AC310461

Harness side

Junction block (rear view)

Connector: C-227

AF

<RHD>

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

AC310488

Harness side

AC

Connector: E-12
<LHD>

E-12(B)

Front door (RH)

AC310498

Harness side

AB

Connector: E-12
<RHD>

E-12(B)

AC310452

Connector: C-110

AG

<LHD>

AC310454

Connector: C-17

AK

<RHD>

CHECK AT ECU TERMINAL

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-296

CHECK AT ECU TERMINAL

M1549001200823

ETACS-ECU

NOTE: Terminal numbers 1 to 20 can not be measured as the ETACS-ECU is mounted on the junction block 
directly. The values are for reference only.

AC005554 AI

C-226

C-227

C-228

Terminal 
No.

Check item

Check condition

Normal condition

1

Output to the power window relay

When the power windows are 
operative

System voltage

2

Power supply to the central door 
locking system (battery positive 
voltage)

Always

System voltage

3

Earth (for ECU)

Always

0 V

4

Ignition switch (ACC)

Ignition switch: ACC

System voltage

5

Output to room lamp

When the room lamp is on

2 V or less

6

Power supply to interior lamp 
(battery positive voltage)

Always (when the interior lamp off 
function is off)

System voltage

7

Input from all the door switches

One of the door switches: ON (door 
open)

0 V

8

Power supply from ignition switch 
(IG1)

Ignition switch: ON

System voltage

9

Output to right turn-signal lamps

When right turn-signal lamps are on System voltage

10

Input from driver's door switch

Driver's door switch: ON (door 
open)

0 V

11

Power supply to turn-signal lamps 
(battery positive voltage)

Always

System voltage

12

Output to central door locking (for 
locking the doors)

When the door lock actuators lock 
the doors

System voltage

13

Output to central door locking (for 
unlocking the doors other than the 
driver's door)

When the door lock actuators 
unlock the doors

System voltage

14

Output to left turn-signal lamps

When the left turn-signal lamps are 
on

System voltage

15 to 17 −

−

−

18

Power supply from ignition switch 
(ACC)

Ignition switch: ACC

System voltage

19

−

−

−

20

Battery power supply (for ECU)

Always

System voltage

21

Input from rear fog lamp switch

Rear fog lamp switch: ON

0 V

CHECK AT ECU TERMINAL

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-297

22

Output to central door locking (for 
unlocking the driver's door)

When the door lock actuators 
unlock the doors

System voltage

23 to 28 −

−

−

29

Input of collision signal

−

−

30

Input to key reminder switch

Key reminder switch: ON (ignition 
key removed)

0 V

31 to 34 −

−

−

35

Input to driver's door lock actuator 
(lock switch)

Driver's door lock: Locked

0 V

36

Input to driver's door lock actuator 
(unlock switch)

Driver's door lock: Unlocked

0 V

37 to 44 −

−

−

51

Setting diagnosis code or sending 
input check signal

When diagnosis code is set (the 
M.U.T.-II/III is connected or the 
diagnosis connector terminal No.1 
is earthed)

0 to 12 V (pulse signal)

When input check signal is sent

0 V, 12 V (input signal 
is fluctuating)

52

−

−

−

53

Output to door-ajar indicator lamp

When door-ajar indicator lamp is on 0 V

54

−

−

−

55

Input from hazard warning lamp 
switch

Hazard warning lamp switch: ON

0 V

56

Earth (for sensor)

Always

0 V

57, 58

−

−

−

59

SWS communication line

Always

0 to 12 V (pulse signal)

60 to 62 −

−

−

63

Input of vehicle speed signal

When the vehicle is being driven

0 to 12 V (pulse signal)

64, 65

−

−

−

66

Input from windshield intermittent 
wiper volume

Turn the ignition switch to the ACC 
position, and move the wiper 
volume from "Fast" to "Slow."

0 to 2.5 V

67

Input from diagnosis control

When M.U.T.-II/III is connected

0 V

68

Input of SWS request signal

Always

0 to 12 V (pulse signal)

69

Output to ignition key cylinder 
illumination lamp

When ignition key cylinder 
illumination is on

2 V or less

70

−

−

−

71

Power supply to interior lamp

Always (when the interior lamp off 
function is off)

System voltage

72, 73

−

−

−

74

Output to rear fog lamp

When rear fog lamp is on

System voltage

Terminal 
No.

Check item

Check condition

Normal condition

CHECK AT ECU TERMINAL

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-298

COLUMN SWITCH

AC005555AG

C-206

Terminal 
No.

Check item

Check condition

Normal condition

1

Battery power supply

Always

System voltage

2

Input of SWS request signal

Always

0 to 12 V (pulse signal)

3

SWS communication line

Always

0 to 12 V (pulse signal)

4

Earth

Always

0 V

5

−

−

−

6

Output to windshield intermittent 
wiper volume

Ignition switch: ACC
Move the wiper volume from "Fast" 
to "Slow."

0 to 2.5 V

7

−

−

−

8

Back-up output to windshield wiper 
switch

Windshield low-speed wiper switch 
or windshield high-speed wiper 
switch: ON

0 V

9

Power supply from ignition switch 
(IG1)

Ignition switch: ON

System voltage

10

Back-up output to headlamp switch Headlamp switch: ON

0 V