Mitsubishi Colt Ralliart. Manual - part 427

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-216

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) USING SWS MONITOR

54C-217

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) USING SWS MONITOR

54C-218

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. ETACS switch data by using the SWS 
monitor
Check the input signal from the remote controlled 
mirror switch.

• Ignition switch: ON

• Remote controlled mirror (folding/unfolding) 

switch: from OFF to 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 

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

Item No.

Item name

Normal 
condition

Item 14

EL RET MIR SW

OFF to ON 
(only when 
switch is 
operated)

AC401055

AI

Connector: B-20

Harness side

AC313826 AD

Connector: B-132

Junction block (Rear view)

Harness side

Main

Index

Group

TOC

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-219

Inspection Procedure N-9: The hazard warning 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 hazard warning lamp switch is 
used to operate the functions below. If the signal is 
abnormal, these functions will not work normally.

POSSIBLE CAUSES

• Malfunction of the hazard warning lamp switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Connector check: B-09 hazard warning 
lamp switch connector

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the defective connector.

Hazard Warning Lamp Switch Input Circuit

ETACS-
ECU

HAZARD
WARNING
LAMP 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

AC401055

AJ

Connector: B-09

Harness side

Main

Index

Group

TOC