Mitsubishi Galant. Manual — part 690

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-155

STEP 11. Check the harness wires between fog light relay
connector A-06X and fog light connectors A-28 and A-31
and combination meter connector C-29.
NOTE: After checking intermediate connectors C-05 and C-66,
check the wires. If intermediate connectors C-05 and C-66 are
damaged, repair or replace them. Refer to GROUP 00E,
Harness Connector Inspection

P.00E-2

.

Q: Are the harness wires between fog light relay connector

A-06X and fog light connectors A-28 and A-31 and
combination meter connector C-29 in good condition?
YES : Go to Step 12.
NO : Repair them. The fog lights should illuminate

normally.

AC003128 AL

CONNECTOR: A-06X

FOGLIGHT
RELAY

BATTERY

AC003129 AK

A-31

CONNECTORS: A-28, A-31

A-28

AC003089 AC

CONNECTOR: C-05

AC003079 AB

CONNECTOR
BLOCK (LH)

CONNECTOR: C-66

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-156

STEP 12. Replacement of ECU
(1)Replace the front-ECU.
(2)The fog lights should illuminate normally.

Q: Do the fog lights illuminate normally?

YES : There is no action to be taken.
NO : Replace the ETACS-ECU. The fog light should

illuminate normally.

Inspection Procedure K-2: Fog light: Fog lights do not go out when the headlights (low-beam) are
turned off while the fog lights are on.

TECHNICAL DESCRIPTION (COMMENT).
If the malfunction above occurs, the front-ECU may
be defective.

TROUBLESHOOTING HINT
Malfunction of the front-ECU

DIAGNOSIS
Replace the front-ECU.
The fog lights should go out when the headlights (low-beam)
are turned off while the fog lights are on.

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-157

Inspection Procedure L-1: Dome light: Dome light does not illuminate.

Dome Light Drive Circuit

AC004215

SWS DIAGNOSIS

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-158

CIRCUIT OPERATION
The dome light dimming function and the keyless
entry system answerback function illuminate the
dome light when the dome light switch is at "door
controlled operation position."

TECHNICAL DESCRIPTION (COMMENT)
If the dome light dose not illuminate at all, the dome
light bulb may be burned out, or the power supply
circuit or the ETACS-ECU may be defective.

TROUBLESHOOTING HINTS

•

Malfunction of the dome light

•

Malfunction of the ETACS-ECU

•

Damaged harness wires or connectors

DIAGNOSIS

Required Special Tools:

•

MB991223: Test Harness Set

STEP 1. Check the trouble symptom.

Q: Does the dome light illuminate when the dome light

switch is turned to "ON" position?
YES : Go to Step 2.
NO : Go to Step 3.

AC003079 AB

CONNECTOR
BLOCK (LH)

CONNECTOR: C-66

AC003082 AN

CONNECTORS: C-73, C-76

C-73

JUNCTION BLOCK
(FRONT VIEW)

C-76

AC003080AC

C-86

JUNCTION BLOCK
(REAR VIEW)

CONNECTORS: C-84, C-86

C-84

AC003176 AB

CONNECTOR: D-06