Mitsubishi Lancer Evolution IX. Manual — part 256

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-283

Step 4. Check the wiring harness between C-207
key reminder switch connector terminal No.4 and
the body earth.

NOTE:

Prior to the wiring harness inspection, check joint
connector C-101 <LH drive vehicles> or C-06 <RH
drive vehicles>, 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.

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.

AC310479

AC

Connector: C-207
<LHD>

Harness side

2
7 6

1
3

5 4

AC310481AC

Harness side

Connector: C-207
<RHD>

AC310446

Connector: C-101
<LHD>

AF

Harness side

AC310456

Connector: C-06
<RHD>

AG

Harness side

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

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-284

Step 6. Check the wiring harness between C-207
key reminder switch connector terminal No.6 and
C-227 ETACS-ECU connector terminal No.30.

• 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. Pulse check
Check the input signal from the key reminder switch.

OK: The M.U.T.-II/III sounds or the voltmeter
needle fluctuates.

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.

AC310479

AC

Connector: C-207
<LHD>

Harness side

2
7 6

1
3

5 4

AC310481AC

Harness side

Connector: C-207
<RHD>

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

System switch

Check condition

Key reminder switch

When the inserted
ignition key is pulled out

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-285

INSPECTION PROCEDURE L-10: The hazard warning lamp switch signal is not received.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

Input signal from the hazard warning lamp switch is
used to operate the functions below. If the signal is
abnormal, these functions will not work normally.

• Keyless entry system (encrypted code registra-

tion)

• Hazard warning lamp

POSSIBLE CAUSES

• Malfunction of the hazard warning lamp switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

ETACS-
ECU

HAZARD
WARNING
LAMP SWITCH

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

Hazard Warning Lamp Switch Input Circuit

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-286

DIAGNOSIS PROCEDURE

Step 1. Connector check: C-03 hazard warning
lamp switch connector

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the defective connector.

Step 2. Check the hazard warning lamp switch.
Refer to GROUP 54A

− Hazard warning lamp switch

P.54A-72

.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Replace the hazard warning lamp switch.

Step 3. Resistance measurement at the C-03
hazard warning lamp switch connector

(1) Disconnect the connector, and measure at the

wiring harness side.

(2) Resistance between C-03 hazard warning lamp

switch connector terminal No.2 and body earth

OK: 2

Ω or less

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Go to Step 4.

AC310446

Connector: C-03
<LHD>

AG

Harness side

AC310454

Connector: C-03
<RHD>

AG

Harness side

AC310446

Connector: C-03
<LHD>

AG

Harness side

AC310454

Connector: C-03
<RHD>

AG

Harness side

AC301541

3

4

2 1

GZ

Connector C-03
(Harness side)