Mitsubishi 380. Manual - part 94

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-373

STEP 13. Check the wiring harness between rear dome 
lamp connector D-07 (terminals 1 and 2) and ETACS-ECU 
connector C-219 (terminals 6 and 5).
Q: Is the wiring harness between rear dome lamp 

connector D-07 (terminals 1 and 2) and ETACS-ECU 
connector C-219 (terminals 6 and 5) in good condition?
YES : Replace the rear dome lamp. Check that the rear 

dome lamp illuminates normally.

NO :  The wiring harness may be damaged or the 

connector(s) may have loose, corroded or damaged 
terminals, or terminals pushed back in the connector. 
Repair the wiring harness as necessary. Check that 
the rear dome lamp illuminates normally.

STEP 14. Check the input signal (by using the pulse check 
mode of the monitor).
Check the input signals from the trunk lid latch assembly.

• Check whether diagnostic tool MB991958 sounds or not 

when the trunk is opened.

(1) Operate diagnostic tool MB991958 according to the 

procedure below to display "Pulse checking."
a. Select "Interactive Diagnosis."
b. Select "System Select."
c. Select "SWS."
d. Select "Pulse Checking."

Q: Does diagnostic tool MB991958 sound when the trunk is 

opened and closed?
YES : Go to Step 15.
NO :  Refer to Inspection Procedure N-7 "ETACS-ECU 

does not receive any signal from the trunk lid latch 
assembly 

P.54B-469

."

54DB014A

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

16DB455A

CONNECTORS: D-07, D-10

D-07

D-10

D-10

D-07

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-374

STEP 15. Check trunk lamp connector D-10, ETACS-ECU 
connectors C-218 and C-219 for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.
Q: Is trunk lamp connector D-10, ETACS-ECU connectors 

C-218 and C-219 in good condition?
YES : Go to Step 16.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Check that the trunk lamp illuminates 

normally.

STEP 16. Check the trunk lamp bulb.

Q: Is the trunk lamp bulb in good condition?

YES : Go to Step 17.
NO :  Replace the trunk lamp bulb. Check that the trunk 

lamp illuminates 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

16DB455A

CONNECTORS: D-07, D-10

D-07

D-10

D-10

D-07

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-375

STEP 17. Check the wiring harness between trunk lamp 
connector D-10 (terminals 1 and 2) and ETACS-ECU 
connector C-219 (terminal 6) or C-218 (terminal 46).

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

16DB445A

CONNECTOR A-18
(HARNESS SIDE)

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-376

NOTE: Also check intermediate connector C-28 and junction 
block connector C-204 for loose, corroded, or damaged termi-
nals, or terminals pushed back in the connector. If intermediate 
connector C-28 or junction block connector C-204 is damaged, 
repair or replace the damaged component(s) as described in 
GROUP 00E, Harness Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between trunk lamp connector 

D-10 (terminals 1 and 2) and ETACS-ECU connector 
C-219 (terminal 6) or C-218 (terminal 46) in good 
condition?
YES : Replace the trunk lamp. Check that the trunk lamp 

illuminates normally.

NO :  The wiring harness may be damaged or the 

connector(s) may have loose, corroded or damaged 
terminals, or terminals pushed back in the connector. 
Repair the wiring harness as necessary. Check that 
the trunk lamp illuminates normally.

INSPECTION PROCEDURE K-3: Interior lamp: Dome lamp dimming function does not work normally.

NOTE: This troubleshooting procedure requires the 
use of diagnostic tool MB991958 and SWS monitor 
kit MB991813. For details on how to use the SWS 
monitor, refer to "How to connect SWS monitor 

P.54B-13

."

.

16DB350A

CONNECTOR:C-28

16DB324A

CONNECTOR: C-204

HARNESS SIDE

ETACS-

ECU

· 

ALL DOOR 

SWITCH

· 

FRONT 

DOOR SWITCH

· IGNITION SWITCH (IG1)

· 

INTERIOR LIGHT 

  LOADED SIGNAL

· KEY REMINDER SWITCH

JUNCTION BLOCK SIDE

JUNCTION 

BLOCK

INPUT SIGNAL

NOTE

WITHOUT SUNROOF

WITH SUNROOF

· 

MAP LIGHT ASSEMBLY

· OVERHEAD CONSOLE 

 ASSEMBLY

· 

REAR DOME LIGHT

· 

TRUNK LIGHT

Ignition Dimming Function