Mitsubishi Lancer Evolution IX. Manual - part 178

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-275

INSPECTION PROCEDURE L-11: The front door lock actuator (RH) switch signal is not received. <RH 
drive vehicles>

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

Input signal from the front door lock actuator (RH) is 
used to operate the functions below. If the signal is 
abnormal, these functions will not work normally.

• Central door locking

• Keyless entry system

• Room lamps

POSSIBLE CAUSES

• Malfunction of the front door lock actuator (RH)

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

ETACS-ECU

DOOR LOCK
ACTUATOR
(FRONT: RH)

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

Front Door Lock Actuator Input Circuit <RHD>

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-276

DIAGNOSTIC PROCEDURE

Step 1. Connector check: E-15 front door lock 
actuator (RH) connector

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the defective connector.

Step 2. Check the front door lock actuator (RH).
Refer to GROUP 42 

− Door 

P.42-31

.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace the front door lock actuator (RH).

Step 3. Resistance measurement at the E-15 front 
door lock actuator (RH) connector

(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Resistance between E-15 front door lock actuator 

(RH) connector terminal No.3 and body earth

OK: 2 

Ω or less

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Go to Step 4.

Step 4. Check the wiring harness between E-15 
front door lock actuator (RH) connector terminal 
No.3 and body earth

NOTE: 

Prior to the wiring harness inspection, check interme-
diate connector C-110, and repair if necessary.

• 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.00-5

).

NO : 

Repair the wiring harness.

AC310493

Harness side

AF

Connector: E-15 <RHD>

E-15 (B)

AC310493

Harness side

AF

Connector: E-15 <RHD>

E-15 (B)

AC301541HR

Connector E-15
(Harness side)

5

6

4

2

3

1

AC310493

Harness side

AF

Connector: E-15 <RHD>

E-15 (B)

AC310456

Connector: C-110

AE

<RHD>

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-277

Step 5. Connector check: C-227 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the defective connector.

Step 6. Check the wiring harness from E-15 front 
door lock actuator (RH) connector terminal Nos.1 
and 2 to C-227 ETACS-ECU connector terminal 
Nos.36 and 35.

NOTE: 

Prior to the wiring harness inspection, check interme-
diate connector C-110, 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 front door lock actuator (RH) switch 
signal is received normally.

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.

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

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

AC310493

Harness side

AF

Connector: E-15 <RHD>

E-15 (B)

AC310456

Connector: C-110

AE

<RHD>

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-278

INSPECTION PROCEDURE L-12: The vehicle speed sensor signal is not received.

CAUTION

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

Vehicle Speed Sensor Input Circuit <LHD>

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

ETACS-ECU

VEHICLE
SPEED SENSOR