Mitsubishi Lancer Evolution IX. Manual — part 251

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-263

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 4. SWS monitor data list.

<Selected item> ETACS ECU

• Ignition switch: ON

OK: Normal condition is displayed.

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.

INSPECTION PROCEDURE L-3: The door switch (front: LH) signal is not received. <LH drive
vehicles>

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

Input signal from the driver's door switch is used to
operate the functions below. If the signal is abnormal,
these functions will not work normally.

• Lamp reminder function

• Headlamp automatic shutdown function

• Room lamps

• Door-ajar indicator lamp

POSSIBLE CAUSES

• Malfunction of the driver's door switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

Item No.

Item name

Normal condition

Item 30

IG SW(IG1)

ON

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

ETACS-ECU

FRONT DOOR
SWITCH (LH)

Door Switch Input Circuit <LHD>

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-264

DIAGNOSIS PROCEDURE

Step 1. Check the installation condition.
Check that the door switch (front: LH) is installed on
the body correctly.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Correct the installation condition.

Step 2. Connector check: D-18 door switch (front:
LH) connector

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Repair the defective connector.

Step 3. Check the door switch (front: LH).
Refer to GROUP 42

− Door

P.42-27

.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Replace the door switch (front: LH).

Step 4. Connector check: C-226 ETACS-ECU
connector

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Repair the defective connector.

Step 5. Check the wiring harness between D-18
door switch (front: LH) connector terminal No.3
and C-226 ETACS-ECU connector terminal No.10.

NOTE:

Prior to the wiring harness inspection, check joint
connector C-217, 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.

AC310465

Harness side

AB

Connector: D-18
<LHD>

AC310450

Connector: C-226

AB

Junction block side

Junction block (rear view)

<LHD>

AC310450

Connector: C-226

AB

Junction block side

Junction block (rear view)

<LHD>

AC310465

Harness side

AB

Connector: D-18
<LHD>

AC310448

Harness side

Junction block (front view)

Connector: C-217

AC

<LHD>

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-265

Step 6. SWS monitor data list.

<Selected item> ETACS ECU

• Driver's door: open

OK: Normal condition is displayed.

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.

INSPECTION PROCEDURE L-3: The door switch (front: RH) 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 door switch (front: RH) is used
to operate the functions below. If the signal is abnor-
mal, these functions will not work normally.

• Lamp reminder function

• Headlamp automatic shutdown function

• Room lamps

POSSIBLE CAUSES

• Malfunction of the door switch (front: RH)

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

Item No.

Item name

Normal condition

Item 32

DR DOOR SW

ON

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

ETACS-ECU

DOOR SWITCH
(RH)

Door Switch Input Circuit <RHD>

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-266

DIAGNOSTIC PROCEDURE

Step 1. Check the installation condition.
Check that the door switch (front: RH) is installed on
the body correctly.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Correct the installation condition.

Step 2. Connector check: D-01 door switch (front:
RH) connector

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Repair the defective connector.

Step 3. Check the door switch (front: RH).
Refer to GROUP 42

− Door

P.42-27

.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Replace the door switch (front: RH).

Step 4. Connector check: C-226 ETACS-ECU
connector

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Repair the defective connector.

Step 5. Check the wiring harness between D-01
door switch (front: RH) connector terminal No.3
and C-226 ETACS-ECU connector terminal No.10.

NOTE:

Prior to the wiring harness inspection, check joint
connector C-217, 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.

AC310471

Harness side

AB

Connector: D-01
<RHD>

AC310461

Junction block (rear view)

Connector: C-226

AB

<RHD>

Junction block side

AC310461

Junction block (rear view)

Connector: C-226

AB

<RHD>

Junction block side

AC310471

Harness side

AB

Connector: D-01
<RHD>

AC310458

Harness side

Junction block (front view)

Connector: C-217

AC

<RHD>