Mitsubishi Colt Ralliart. Manual - part 366

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-208

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

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-209

Step 2. Resistance measurement at the B-135 
column switch connector.

(1) Disconnect the connector, and measure at the 

column switch side.

(2) Resistance between B-135 column switch 

connector terminal No.6 and body earth

OK: The resistance should rise from 0 to 
1 k

Ω when the windshield intermittent 

wiper volume is rotated from "Fast" to 
"Slow".

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace the column switch.

Step 3. Connector check: B-133 ETACS-ECU 
connector.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the defective connector.

Step 4. Check the wiring harness between B-135 
column switch connector terminal No.6 to B-133 
ETACS-ECU connector terminal No.73.

• Check the input line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the wiring harness.

Step 5. Retest the system.
Check that the windshield intermittent wiper volume 
is sending a correct signal.

Q: Is the check result 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 ETACS-ECU.

AC401044AC

Connector: B-135

Harness side

AC310506 DO

Connector B-135 
(Harness side)

AC313826AC

B-133 (GR)

Connector: B-133

Harness side

Junction block (Rear view)

AC313826AC

B-133 (GR)

Connector: B-133

Harness side

Junction block (Rear view)

AC401044AC

Connector: B-135

Harness side

Main

Index

Group

TOC

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-210

INSPECTION PROCEDURE N-7: The key reminder 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 key reminder switch is used to 
operate the functions below. If the signal is abnormal, 
these functions will not work normally.

• Keyless entry system

• Ignition key cylinder illumination lamp

• Room lamp

POSSIBLE CAUSES

• Malfunction of the key reminder switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Connector check: B-140 key reminder 
switch connector

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the defective connector.

ETACS-
ECU

KEY
REMINDER
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

WHEN REMOVING
KEY: ON

Key Reminder Switch Input Circuit

AC401044

Connector: B-140

AB

Harness side

B-140(B)

Main

Index

Group

TOC

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-211

Step 2. Check the key reminder switch.
Refer to GROUP 54A 

− Ignition switch 

P.54A-27

.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace the key reminder switch.

Step 3. Resistance measurement at the B-140 key 
reminder switch connector.

(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Resistance between B-140 key reminder switch 

connector terminal No.4 and body earth

OK: Continuity exists (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 B-140 
key reminder switch connector terminal No.4 to 
the body earth.

NOTE: 

Prior to the wiring harness inspection, check joint 
connector B-25, 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 

use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction 

P.00-13

).

NO : 

Repair the wiring harness.

Step 5. Connector check: B-133 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the defective connector.

AC401044

Connector: B-140

AB

Harness side

B-140(B)

AC310506DP

Connector B-140 
(Harness side)

AC401044

Connector: B-140

AB

Harness side

B-140(B)

AC401055

Connector: B-25

AG

AC313826AC

B-133 (GR)

Connector: B-133

Harness side

Junction block (Rear view)

Main

Index

Group

TOC