Mitsubishi Montero Sport (2004+). Manual - part 543

FOG LIGHT

TSB Revision

CHASSIS ELECTRICAL

54-159

INSPECTION

M1542011200328

FOG LIGHT SWITCH CONTINUITY CHECK

FOG LIGHT RELAY CHECK

SWITCH POSITION TESTER 

CONNECTION

SPECIFIED 
CONDITION

Released

1 

− 2

Open circuit

Pressed

1 

− 2

Less than 2 ohms

AC002792 AB

BATTERY VOLTAGE TESTER 

CONNECTION

SPECIFIED 
CONDITION

Not applied

4 

− 5

Open circuit

• Connect terminal 3 

to the positive 
battery terminal

• Connect terminal 1 

to the negative 
battery terminal

4 

− 5

Less than 2 
ohms

AC003679

FOG LIGHT RELAY

AB

REAR COMBINATION LIGHT

TSB Revision

CHASSIS ELECTRICAL

54-160

REAR COMBINATION LIGHT

REAR COMBINATION LIGHT DIAGNOSIS

M1542000700802

The taillights are controlled by the light reminder 
alarm function of the ETACS-ECU. For troubleshoot-
ing, refer to Headlight, Light Reminder Alarm Diag-
nosis-symptom Chart 

P.54-124

.

REAR COMBINATION LIGHT

REMOVAL AND INSTALLATION

M1542003900515

WARNING

•

Before removal of the air bag module, refer to GROUP 52B, SRS Service Precautions 
(

P.52B-17

) and Air Bag Module and Clock Spring (

P.52B-84

).

•

When removing and installing the steering wheel, do not let it bump against the air bag 
module.

AC309548AB

1

2

3

4

5

6

7

1. LIGHTING SWITCH

REAR COMBINATION LIGHT REMOVAL 
STEPS

2. REAR COMBINATION LIGHT
3. BULB (FOR TAIL AND STOPLIGHT)
4. BULB (FOR SIDE MARKER LIGHT)

5. BULB (FOR BACKUP LIGHT)
6. BULB (FOR TURN-SIGNAL LIGHT)
7. BULB SOCKET ASSEMBLY

DOME LIGHT

TSB Revision

CHASSIS ELECTRICAL

54-161

DOME LIGHT

LIGHTING SYSTEM DIAGNOSIS

INTRODUCTION TO DOME LIGHT AND CARGO SPACE LIGHT DIAGNOSIS 
<VEHICLES WITH KEYLESS ENTRY SYSTEM>

M1542010500519

With the dome light switch and cargo space light 
switch in the "ROOM" position, the ETACS-ECU con-
trols the dome light and cargo space light operation 
as follows:

• When a door is opened from outside or inside 

[with the ignition switch turned to "LOCK" (OFF)]: 
When a door is opened, the ETACS-ECU causes 
the dome light and cargo space light to be illumi-
nated at the 100% intensity. When the door is 
closed, it dims out the dome light to 65% intensity 
and approximately 30 seconds later, turns out the 
light completely. During this period (timer con-
trolled period), the dome light and cargo space 
light goes out if the ignition switch is turned "ON" 
or the doors are locked.

• When a door is opened or closed with the ignition 

switch in the "ON" position: The dome light and 
cargo space light illuminates at 100% intensity 
when a door is opened and turned out when it is 
closed.

• When no door is opened and the ignition key is 

removed: When the ignition key is removed with 
all the doors closed, the dome light and cargo 
space light are illuminated at an intensity of 100% 
and turned out approximately 30 seconds later. 
During that time (time-controlled period), the 
dome light and cargo space light goes out if the 
ignition key inserted and turned to "ON" or the 
door locking system is activated.

• Dome light's and cargo space light's answerback 

operation in response to door lock control by key-
less entry system: To allow the driver to ascertain 
the result of the door locking/unlocking control 
action by the use of the keyless entry system, the 
ETACS-ECU causes the dome light and cargo 
space light to blink twice when the doors are 
locked through the system and to illuminate for 
approximately15 seconds when the doors are 
locked. The dome light's and cargo space light's 
answerback operation in response to a keyless 
entry by operation of the hazard warning lights.

DOME LIGHT AND CARGO SPACE LIGHT DIAGNOSTIC TROUBLESHOOTING 
STRATEGY <VEHICLES WITH KEYLESS ENTRY SYSTEM>

M1542010600130

Use these steps to plan your diagnostic strategy. If 
you follow them carefully, you will be sure that you 
have exhausted most of the possible ways to find a 
dome light and cargo space light fault.
1. Gather information from the customer.

2. Verify that the condition described by the 

customer exists.

3. Find the malfunction by following the Symptom 

Chart.

4. Verify that the malfunction is eliminated.

SYMPTOM CHART

M1542009100205

SYMPTOM

INSPECTION 
PROCEDURE

REFERENCE PAGE

The dome light and cargo space light does not 
illuminate.

1

 

P.54-162

The dome light and cargo space light dimming 
function does not work normally.

2

 

P.54-171

DOME LIGHT

TSB Revision

CHASSIS ELECTRICAL

54-162

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: The Dome Light and Cargo Space Light does not Illuminate.

Dome Light and Cargo Space Light Drive Circuit

AC003431

CONNECTOR: A-54X

A-54X

AC

AC003534

AC

CONNCTORS: D-01, D-07

D-01

D-07

JUNCTION BLOCK (FRONT)