Mitsubishi Colt Ralliart. Manual — part 425

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-208

Inspection Procedure N-4: The column switch (lighting and turn-signal 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 column switch (lighting and
turn-signal lamp switch) is used to operate the func-
tions below. If the signal is abnormal, these functions
will not work normally.

• Lamp reminder buzzer

• Headlamp and tail lamp

• Fog lamp

• Turn signal lamp

POSSIBLE CAUSES

• Malfunction of the column switch

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Check the column switch connector.
Check that the wiper and washer switch connector,
the lighting switch connector and the switch body
connector are in good condition.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the defective connector.

Step 2. Check the column switch (lighting switch
and switch body).
Refer to GROUP 54A

− Column switch

P.54A-90

.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Replace the column switch.

Step 3. ECU check by using the SWS monitor
Check that the power supply and earth lines to the
column switch (column-ECU) and the SWS commu-
nication lines are normal.

• Ignition switch: OFF

ECU TO BE CHECKED

• COLUMN ECU

OK: "OK" is displayed on the "COLUMN
ECU" menu.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Refer to Inspection Procedure A-2
"Communication with the column switch
(column-ECU) is not possible

P.54C-37

."

Lighting Switch Input Circuit

(DIMMER· PASSING SWITCH)

(LIGHTING SWITCH)

TURN-SIGNAL
LAMP SWITCH

COLUMN SWITCH

COLUMN-ECU

Main

Index

Group

TOC

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-209

Step 4. SWS monitor data list

<Selected item> COLUMN ECU

• Operate each function of the switch.

OK: Normal conditions are displayed for all
the functions of the switch.

Q: Are the check results normal?

YES :

The trouble can be an intermittent

malfunction (Refer to GROUP 00

− How to

use Troubleshooting/inspection Service
Points

− How to Cope with Intermittent

Malfunction

P.00-13

).

NO :

Replace the column switch.

Item No.

Item name

Normal
condition

Item 00

HEADLAMP SW

ON

Item 01

TAIL LAMP SW

ON

Item 02

DIMMER SW

ON

Item 03

PASSING SW

ON

Item 10

TURN SIG.RH

ON

Item 11

TURN SIG.LH

ON

Main

Index

Group

TOC

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-210

Inspection Procedure N-5: The column switch (windshield wiper washer and rear wiper washer
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 column switch (wiper switch) is
used to operate the functions below. If the signal is
abnormal, these functions will not work normally.

• Windshield wiper and washer

• Rear wiper and washer

POSSIBLE CAUSES

• Malfunction of the column switch

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. ECU check by using the SWS monitor
Check that the power supply and earth lines to the
column switch (column-ECU) and the SWS commu-
nication lines are normal.

• Ignition switch: OFF

ECU TO BE CHECKED

• COLUMN ECU

OK: "OK" is displayed on the "COLUMN
ECU" menu.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Refer to Inspection Procedure A-2
"Communication with column switch
(column-ECU) is not possible

P.54C-37

."

Step 2. SWS monitor data list

<Selected item> COLUMN ECU
Operate each function of the switch.

OK: Normal conditions are displayed for all
the functions of the switch.

Q: Are the check results normal?

YES :

The trouble can be an intermittent

malfunction (Refer to GROUP 00

− How to

use Troubleshooting/inspection Service
Points

− How to Cope with Intermittent

Malfunction

P.00-13

).

NO :

Replace the column switch.

WINDSHIELD
WIPER SWITCH

COLUMN-ECU

COLUMN SWITCH

WINDSHIELD
WASHER SWITCH

REAR WIPER AND
WASHER SWITCH

Wiper and Washer Switch Input Circuit

Item No.

Item name

Normal
condition

Item 05

INT WIPER SW

ON

Item 06

LO WIPER SW

ON

Item 07

HI WIPER SW

ON

Item 08

MIST WIPER SW

ON

Item 09

FRONT WASH.SW

ON

Item 13

REAR WIPER SW

ON

Item 14

REAR WASH.SW

ON

Main

Index

Group

TOC

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-211

Inspection Procedure N-6: The windshield intermittent wiper volume signal is not received.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

The intermittent wiper interval is calculated in
accordance with the input signal from the windshield
intermittent wiper volume. If this signal is abnormal,
the wiper interval can not be adjusted.

POSSIBLE CAUSES

• Malfunction of the column switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Connector check: B-135 column switch
connector.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the defective connector.

COLUMN
SWITCH

WINDSHIELD
INTERMITTENT
WIPER INTERVAL
ADJUSTING KNOB

ETACS-
ECU

COLUMN-ECU

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

Windshield Intermittent Wiper Interval Adjusting Knob Input Circuit

AC401044AC

Connector: B-135

Harness side

Main

Index

Group

TOC