Mitsubishi Galant 9G. Manual — part 110

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-436

STEP 15. Check trunk light 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 light 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 light illuminates

normally.

STEP 16. Check the trunk light bulb.
Q: Is the trunk light bulb in good condition?

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

illuminates normally.

AC305414

CONNECTORS: C-218, C-219

JUNCTION BLOCK
(REAR VIEW)

C-219

C-218 (GR)

HARNESS SIDE

C-218

C-219

51

52

53

54

55

56

57

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59

60

61

62

63

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68

69

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71

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73

74

JUNCTION BLOCK SIDE

AC

AC400532

HARNESS SIDE

CONNECTOR: D-10

AF

SYMPTOM PROCEDURES

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-437

STEP 17. Check the wiring harness between trunk light
connector D-10 (terminals 1 and 2) and ETACS-ECU
connector C-219 (terminal 6) or C-218 (terminal 52).

AC305414

CONNECTORS: C-218, C-219

JUNCTION BLOCK
(REAR VIEW)

C-219

C-218 (GR)

HARNESS SIDE

C-218

C-219

51

52

53

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55

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74

JUNCTION BLOCK SIDE

AC

AC400532

HARNESS SIDE

CONNECTOR: D-10

AF

SYMPTOM PROCEDURES

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-438

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 light connector

D-10 (terminals 1 and 2) and ETACS-ECU connector
C-219 (terminal 6) or C-218 (terminal 52) in good
condition?
YES : Replace the trunk light. Check that the trunk light

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 light illuminates normally.

INSPECTION PROCEDURE K-3: Interior light: Dome light dimming function does not work 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

."

.

AC305231AE

CONNECTOR:C-28

AC305415AJ

CONNECTOR: C-204

HARNESS SIDE

JUNCTION BLOCK

(FRONT VIEW)

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

SYMPTOM PROCEDURES

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-439

CIRCUIT OPERATION

The ETACS-ECU operates the dome light dimming
function according to the input signals from the fol-
lowing switches:

• Ignition switch (IG1): OFF

• Key reminder switch: ON

• Door switches: OFF

• Driver's door lock actuator switch: LOCK or

UNLOCK

.

TECHNICAL DESCRIPTION (COMMENT)

If the dome lights do not dim normally, the input cir-
cuits from the switches described in "CIRCUIT
OPERATION" or the ETACS-ECU may be defective.

.

TROUBLESHOOTING HINTS

• Trouble in input signal system

• 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

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB991958: Scan 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

STEP 1. Check the dome light.
If a door is opened while the dome light switch is at
"door-linked" position, the dome light should illuminate.
Q: Does the dome light illuminate normally?

YES : Go to Step 2.
NO : Refer to Inspection Procedure K-1 "The dome light do

not illuminate and go out normally

P.54B-420

."

STEP 2. Check the adjustment function.
Q: Has the dome light delay-off time been set to other than

"0 second" by the adjustment function?
YES : Go to Step 3.
NO : Set the dome light delay-off time to "0 second."