Mitsubishi 380. Manual - part 16

INPUT SIGNAL CHART

SIMPLIFIED WIRING SYSTEM (SWS)

54B-61

INPUT SIGNAL CHART

M1549024200501

SWS MONITOR

If a problem is found in the Data List inspection, 
observe the table below.

SYMPTOM

INSPECTION 
PROCEDURE

REFERENCE 
PAGE

ETACS-ECU does not receive any signal from the ignition switch (ACC).

M-1

P.54B-405

ETACS-ECU does not receive any signal from the ignition switch (IG1).

M-2

P.54B-408

ETACS-ECU does not receive any signal from the fog lamp switch.

M-3

P.54B-410

ETACS-ECU does not receive any signal from the front door switches.

M-4

P.54B-413

Column switch

ETACS-ECU does not receive any signal from the tail 
lamp switch.

M-5

P.54B-420

ETACS-ECU does not receive any signal from the 
headlamp switch.

ETACS-ECU does not receive any signal from the 
passing lamp switch.

ETACS-ECU does not receive any signal from the 
dimmer switch.

ETACS-ECU does not receive any signal from the 
turn-signal lamp switch.

ETACS-ECU does not receive any signal from the 
windshield mist wiper switch.

M-6

P.54B-423

ETACS-ECU does not receive any signal from the 
windshield intermittent wiper switch.

ETACS-ECU does not receive any signal from the 
windshield low-speed wiper switch.

ETACS-ECU does not receive any signal from the 
windshield high-speed wiper switch.

ETACS-ECU does not receive any signal from the 
variable intermittent wiper control switch.

M-7

P.54B-426

ETACS-ECU does not receive any signal from the 
windshield washer switch.

M-6

P.54B-423

Sunroof switch

ETACS-ECU does not receive any signal from the up, 
open or close/down switch.

M-8

P.54B-429

INPUT SIGNAL CHART

SIMPLIFIED WIRING SYSTEM (SWS)

54B-62

DIAGNOSTIC TOOL OR VOLTMETER

If a problem is found in the Pulse Check, observe the 
table below.

SYMPTOM

INSPECTION 
PROCEDURE

REFERENCE 
PAGE

ETACS-ECU does not receive any signal from the key reminder switch.

N-1

P.54B-432

ETACS-ECU does not receive any signal from the hazard warning lamp 
switch.

N-2

P.54B-436

ETACS-ECU does not receive any signal from any of the door switches.

N-3

P.54B-440

ETACS-ECU does not receive any signal from the door lock key cylinder 
switch.

N-4

P.54B-446

ETACS-ECU does not receive any signal from the front door lock actuator. N-5

P.54B-451

ETACS-ECU does not receive any signal from the door lock switch 
(incorporated in the power window main switch and front power window 
sub switch).

N-6

P.54B-460

ETACS-ECU does not receive any signal from the trunk lid latch assembly. N-7

P.54B-469

Transmitter

ETACS-ECU does not receive any signal from the lock, 
unlock, trunk or panic switch.

N-8

P.54B-472

ETACS-ECU does not receive any interior lamp loaded signal.

N-9

P.54B-474

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-63

SYMPTOM PROCEDURES

INSPECTION PROCEDURE A-1: Communication with the SWS Monitor Kit is not Possible.

.

TECHNICAL DESCRIPTION (COMMENT)

The SWS monitor kit may be connected improperly.

.

TROUBLESHOOTING HINTS

• The SWS monitor body (I/F cartridge) may be 

defective

• The SWS monitor harness may be defective

• The wiring harness or connectors may have 

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

• The ETACS-ECU may be defective

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB991958: DIAGNOSTIC TOOL (MUT-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: MUT-III USB Cable

• MB991910: MUT-III Main Harness A

• MB991813: SWS Monitor Kit

• MB991806: SWS Monitor Cartridge

• MB991812: SWS Monitor Harness (For Column-ECU)

• MB991822: Probe Harness

52DB022A

CONNECTOR: C-211

54DB044A

C-219

C-218 (GR)

CONNECTORS: C-218, C-219

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-64

STEP 1. Verify SWS monitor kit MB991813 for proper 
connection.

Q: Is SWS monitor kit MB991813 connected with the 

column switch properly?
YES : Go to Step 2.
NO :  Connect SWS monitor kit MB991813 to the column 

switch securely.

STEP 2. Verify the power supply circuit to the ETACS-ECU.

Q: Does the system communicate with diagnostic tool 

MB991958 when the ignition switch is turned to the 
"ON" position?
YES : Refer to Inspection Procedure A-3 "Communication 

with the ETACS-ECU is not possible 

P.54B-74

."

NO :  Go to Step 3.

STEP 3. Check ETACS-ECU connectors C-218 and C-219 
for loose, corroded or damaged terminals, or terminals 
pushed back in the connector.
Q: Are ETACS-ECU connectors C-218 and C-219 in good 

condition?
YES : Go to Step 4.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Verify that the system should communicate 

with the SWS monitor normally.

54DB045A

CONNECTORS: C-218, C-219

JUNCTION BLOCK
(REAR VIEW)

C-219

C-218 (GR)

HARNESS SIDE

C-218

C-219

JUNCTION BLOCK SIDE

45

46

48 47

49

50
59

51
60

52

53
62

65

61

54
63

56

68

64

67 66

57

58

55