Mitsubishi Colt Ralliart. Manual - part 367

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-212

Step 6. Check the wiring harness between B-140 
key reminder switch connector terminal No.6 to 
B-133 ETACS-ECU connector terminal No.53.

• 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. Retest the system.
Check that the key reminder switch signal is received 
normally.

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.

AC313826AC

B-133 (GR)

Connector: B-133

Harness side

Junction block (Rear view)

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-213

INSPECTION PROCEDURE N-8: Signal is not received from the remote controlled mirror switch 
(folding/unfolding switch).

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

The electric-folding door mirrors work in accordance 
with the input signal from the remote controlled mir-
ror switch. If the input signal is abnormal, the door 
mirrors will not work normally.

POSSIBLE CAUSES

• Malfunction of the remote controlled mirror switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

Remote Controlled Mirror Switch Input Circuit

ETACS-
ECU

REMOTE
CONTROLLED 
MIRROR SWITCH

FOLD 
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 : Grey     R : Red     P : Pink     V : Violet     PU : Purple

Main

Index

Group

TOC

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-214

DIAGNOSIS PROCEDURE

Step 1. Connector check: B-20 remote controlled 
mirror switch connector

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the defective connector.

Step 2. Check the remote controlled mirror 
switch.
Refer to GROUP 51 

− Door mirror 

P.51-43

.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace the remote controlled mirror switch.

Step 3. Resistance measurement at the B-20 
remote controlled mirror switch connector.

(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Continuity between B-20 remote controlled mirror 

switch connector terminal No.1 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.

AC401055

AI

Connector: B-20

Harness side

AC401055

AI

Connector: B-20

Harness side

AC310506DQ

Connector B-20 
(Harness side)

Main

Index

Group

TOC

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-215

Step 4. Check the wiring harness between B-20 
remote controlled mirror switch connector 
terminal No.1 to 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-132 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the defective connector.

Step 6. Check the wiring harness between B-20 
remote controlled mirror switch connector 
terminal No.4 to B-132 ETACS-ECU connector 
terminal No.27.

• 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. Retest the system.
Check that the electric remote controlled mirror 
switch signal is received normally.

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.

AC401056

AD

B-20

B-20

B-25

B-25

Connectors: B-20, B-25

Harness side

AC313826 AD

Connector: B-132

Junction block (Rear view)

Harness side

AC401055

AI

Connector: B-20

Harness side

AC313826 AD

Connector: B-132

Junction block (Rear view)

Harness side

Main

Index

Group

TOC