Mitsubishi Galant (2004+). Manual - part 310

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-431

JUNCTION BLOCK

22

RELAY BOX
(FUSE     )

RELAY BOX
(FUSE     )

23

ETACS-
ECU

IGNITION
SWITCH (IG1)

IGNITION
SWITCH (ACC)

KEY REMINDER
SWITCH

FRONT
DOOR
SWITCH (LH)

FRONT
DOOR
SWITCH (RH)

FRONT DOOR
LOCK ACTUATOR (LH)

REAR
DOOR
SWITCH (LH)

REAR
DOOR
SWITCH (RH)

TRUNK LID
LATCH
ASSEMBLY

KEY REMINDER
SWITCH

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-432

JUNCTION BLOCK

NOTE

WITHOUT SUNROOF
WITH SUNROOF

ETACS-
ECU

REAR DOME LIGHT

MAP LIGHT ASSEMBLY
OVERHEAD CONSOLE ASSEMBLY

TRUNK LIGHT

RELAY
BOX

 (FUSE     )

IGNITION
SWITCH (IG1)

COMBINATION
METER

22

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-433

INSPECTION PROCEDURE K-1: Interior Light: The dome light do not illuminate and go out normally.

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

P.54B-15

."

22

RELAY BOX
(FUSE     )

NOTE

WITHOUT SUNROOF
WITH SUNROOF

JOINT 
CONNECTOR 
(1)

ETACS-
ECU

KEEP RELAY

· 

ALL DOOR 

  SWITCH
· 

FRONT 

DOOR

  SWITCH
· IGNITION 
  SWITCH (ACC)
· IGNITION 
  SWITCH (IG1)
· 

INTERIOR LIGHT 

  LOADED SIGNAL

· 

MAP LIGHT ASSEMBLY

· OVERHEAD CONSOLE 

 ASSEMBLY

· 

REAR DOME LIGHT

· 

TRUNK LIGHT

INTERIOR 
LAMP CUT

BACK-UP
CIRCUIT

LOAD

DETERMINATION
CIRCUIT

INPUT SIGNAL

JUNCTION BLOCK SIDE

JUNCTION BLOCK

Interior Light Circuit

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-434

JUNCTION BLOCK

ETACS-
ECU

TRUNK
LIGHT

MAP LIGHT
ASSEMBLY

OVERHEAD
CONSOLE
ASSEMBLY

REAR DOME
LIGHT

JUNCTION 
BLOCK SIDE

NOTE

WITHOUT SUNROOF
WITH SUNROOF

Interior Light Circuit