Mitsubishi Lancer Evolution IX. Manual - part 176

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-267

NOTE: 

Prior to the wiring harness inspection, check interme-
diate connector C-113 <RH> and junction block con-
nector C-214 <RH> or C-217 <LH>, and repair if 
necessary.

• Check the input line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the wiring harness between each of 
the door switches and the ETACS-ECU.

Step 6. Retest the system.
Check that all the driver's door switch signals are 
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.

AC310452

Connector: C-113

AF

<LHD>

AC310449

C-214
Harness side

21

7

16 15

17

18

20 19

1

2

3

4

5

6

23 22

24

25

28

26

27

9

8

10

11

14

12

13

Connectors: C-214, C-217

AB

C-214

Junction block (front view)

<LHD>

C-217

C-217

Harness side

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-268

INSPECTION PROCEDURE L-10: All the door switch signals are not received. <RH drive vehicles>

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

Input signals from all the door switches are used to 
operate the functions below. If the signal(s) are 
abnormal, these functions will not work normally.

• Keyless entry system

• Room lamps

POSSIBLE CAUSES

• Malfunction of the door switches

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

ETACS-ECU

DOOR
SWITCH
(FRONT: LH)

DOOR
SWITCH
(REAR: LH)

DOOR
SWITCH
(REAR: RH)

DOOR
SWITCH
(FRONT: RH)

J/B SIDE

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

All Door Switches Input Circuit <RHD>

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-269

DIAGNOSTIC PROCEDURE

Step 1. Pulse check
Check the input signal from the door switch (front: 
RH).

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

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to inspection procedure L-3 "The door 
switch (front: RH) signal is not received 

P.54B-244

."

Step 2. Connector check: D-18 <front: LH>, D-01 
<front: RH>, D-08 <rear: RH> or D-11 <rear: LH> 
door switch connectors, and C-226 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the defective connector.

System switch

Check condition

door switch (front: RH)

When the driver's door is 
opened

AC310461

Junction block (rear view)

Connector: C-226

AB

<RHD>

Junction block side

AC310471

Harness side

AB

Connector: D-01
<RHD>

AC310474

Harness side

D-11

D-08

AB

Connectors: D-08, D-11, D-18
<RHD>

D-011

Harness side

D-08

Harness side

D-18

D-18

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-270

Step 3. Check the installation condition.
Check that the door switch is installed on the body 
correctly.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Correct the installation condition.

Step 4. Check the door switch.
Refer to GROUP 42 

− Door 

P.42-27

.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Replace the door switch.

Step 5. Check the wiring harness from terminal 
No.2 of the D-18 <front: LH>, D-01 <front: RH>, 
D-08 <rear: RH> or D-11 <rear: LH> door switch 
connector to terminal No.7 of the C-226 
ETACS-ECU connector.

AC310461

Junction block (rear view)

Connector: C-226

AB

<RHD>

Junction block side

AC310471

Harness side

AB

Connector: D-01
<RHD>

AC310474

Harness side

D-11

D-08

AB

Connectors: D-08, D-11, D-18
<RHD>

D-011

Harness side

D-08

Harness side

D-18

D-18