Mitsubishi Colt Ralliart. Manual - part 347

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-132

Step 2. Check the power supply circuit.
When the ignition switch is turned to the LOCK 
(OFF) position, check if the hazard warning lamps 
illuminate.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Refer to Inspection Procedure A-2 "When 
the ignition switch is at the LOCK (OFF) 
position, the functions do not work normally. 
Check the battery power supply circuit to 
the ETACS-ECU 

P.54B-43

."

Step 3. Pulse check
Check the input signals below, which are related to 
the ignition key cylinder illumination lamp.

OK: The M.U.T.-III sounds or the voltmeter 
needle fluctuates.

Q: Are the check result normal?

All the signals are received normally. : 

Go to Step 

4.

The ignition switch (IG1) signal is not received. : 

Refer to Inspection Procedure N-2 "The 
ignition switch (IG1) signal is not received 

P.54B-202

."

The key reminder switch signal is not received. : 

Refer to Inspection Procedure N-7 "The key 
reminder switch signal is not received 

P.54B-210

."

The driver's door switch signal is not received. : 

Refer to Inspection Procedure N-3 "The 
driver’s door switch signal is not received 

P.54B-204

."

Step 4. Connector check: B-140 key reminder 
switch connector.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the defective connector.

Step 5. Check the bulb of the ignition key 
cylinder illumination lamp.
Check the bulb of the ignition key cylinder illumina-
tion lamp.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Replace the bulb of the ignition key cylinder 
illumination lamp.

System switch

Check condition

Ignition switch (IG1)

When turned from ACC 
to ON

Key reminder switch

When the inserted 
ignition key is pulled out

Driver's door switch

When the driver's door is 
opened

AC401044

Connector: B-140

AB

Harness side

B-140(B)

Main

Index

Group

TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-133

Step 6. Voltage measurement at B-140 key 
reminder switch connector

(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Voltage between B-140 key reminder switch 

connector terminal No.2 and body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Go to Step 7.

Step 7. Check the wiring harness from B-140 key 
reminder switch connector terminal No.2 to 
fusible link (1)

NOTE: 

Prior to the wiring harness inspection, check joint 
connectors B-22, and junction block connector 
B-131, and B-108, and repair if necessary.

• Check the power supply line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 10.

NO : 

Repair the wiring harness.

AC401044

Connector: B-140

AB

Harness side

B-140(B)

AC313972

Connector B-140
 (Harness side)

AS

AC401044

Connector: B-140

AB

Harness side

B-140(B)

AC401055

Connector: B-22

AD

AC313870

Connector: B-108

BD

Junction block (Front view)

B-108(B)

Harness side

AC313872

Connector: B-131

BD

Harness side

Main

Index

Group

TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-134

Step 8. Connector check: B-133 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair the defective connector.

Step 9. Check the wiring harness from B-133 
ETACS-ECU connector terminal No.62 to B-140 
key reminder switch connector terminal No.1

• Check the input and output lines for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 10.

NO : 

Repair the wiring harness.

Step 10. Retest the system
Check that the ignition key cylinder illumination lamp 
illuminates/extinguishes 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.

AC313872

Connector: B-133

AF

Harness side

52 51

69

60

53

54

71

63 62 61

70

56

65

58

73

67

57

66

72

64

55

59

68

74

B-133(GR)

AC313872

Connector: B-133

AF

Harness side

52 51

69

60

53

54

71

63 62 61

70

56

65

58

73

67

57

66

72

64

55

59

68

74

B-133(GR)

AC401044

Connector: B-140

AB

Harness side

B-140(B)

Main

Index

Group

TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-135

HEADLAMP AND TAIL LAMP

INSPECTION PROCEDURE J-1: The tail lamps do not illuminate normally.

CAUTION

Whenever the ECU is replaced, ensure that the 
input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM

If all the tail lamps do not illuminate, the tail lamp 
switch input circuit or the ETACS-ECU may be defec-
tive.

POSSIBLE CAUSES

• Malfunction of the column switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

Tail Lamp Relay Circuit

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

· TAIL LAMP
· POSITION LAMP
· LICENCE PLATE LAMP

FUSIBLE
LINK

1

TAIL LAMP SWITCH

INPUT SIGNAL

TAIL
LAMP
RELAY

J/B SIDE

Main

Index

Group

TOC