Page 3 of 364

LANCER
EVOLUTION IX
FOREWORD
This manual contains details of the main changes to the
2005 model Lancer Evolution IX. Only differences to the
current Lancer Evolution VIII MR are included, so please use
this manual in conjunction with the related manuals as listed
on the following page.
Please read this manual carefully so that servicing can be
done correctly and quickly, and vehicle performance
maintained.
This manual is based on the current (March 2005) model.
Please bear in mind that vehicle specifications may change
and that future models may not be the same.
Please note that all the units shown in this manual follow the
internationally recognized SI unit system, and that the used
previously are not shown alongside the SI units.
(Nevertheless, please take care because units in reference
documents may be shown in the units which were previously
used). March 2005
MITSUBISHI MOTOR CORPORATION
CONTENTS
General ........................................................
Engine .........................................................
Fuel ..............................................................
Engine Cooling ...........................................
Intake and Exhaust ....................................
Engine Electrical ........................................
Rear axle .....................................................
Wheels and tyres ........................................
Front suspension ...............................................Body
Body.......................................................................
Exterior ........................................................
Interior and SRS Airbag .............................N
Chassis Electrical.........................................
This manual is printed on recycled paper
00
11
13
14
15
16
27
31
33
42
51
52
54
Any opinions, requests or questions concerning this manual,
should be written on the ‘Servicing Comments Form’ at the
end of the manual, and sent to us by fax.
Page 103 of 364
CHASSIS ELECTRICAL – LICENCE PLATE LAMP
SRS AIRBAG – GENERAL54A-1
52B-1
SECTION 52B
SRS AIRBAG
CONTENTS
General........................................................1
General
Acaution label for the airbag has been added on the inside of the bonnet. Other servicing guidelines remain unchanged.
Warning/caution label
SECTION 54A
CHASSIS ELECTRICAL
CONTENTS
Number plate lamp ....................................1
bonnet
Number plate lamp
Due to changes made to the licence plate lamp, servicing guidelines have
been changed to be the same as for the ’03 model Lancer.
Other servicing guidelines remain unchanged.
Page 105 of 364
CHASSIS ELECTRICAL – LICENCE PLATE LAMP
SRS AIRBAG – GENERAL54A-1
52B-1
SECTION 52B
SRS AIRBAG
CONTENTS
General........................................................1
General
Acaution label for the airbag has been added on the inside of the bonnet. Other servicing guidelines remain unchanged.
Warning/caution label
SECTION 54A
CHASSIS ELECTRICAL
CONTENTS
Number plate lamp ....................................1
bonnet
Number plate lamp
Due to changes made to the licence plate lamp, servicing guidelines have
been changed to be the same as for the ’03 model Lancer.
Other servicing guidelines remain unchanged.
Page 138 of 364

Related Documentation
Cautionary Note regarding servicing of vehicles fitted with SRS airbags and/or seatbelts
with pre-tensioner systems.
Warnings:
1. Incorrect inspection or servicing of a component part of the SRS airbag system or seatbelt pre-tensioner system,
or a part relating to these systems, may cause accidental operation (deployment) of the SRS airbag or seatbelt
pre-tensioners, or may cause these systems to be disabled, leading in either case the risk of serious injury.
2. If parts may be affected by heat during painting operations, then those parts must be removed in advance. This
applies to the SRS-ECU, airbag modules (driver’s sear and front passenger’s seat), clock springs, front impact
sensors, side impact sensors, and pre-tensioner seatbelts.
• 93ºC or above : SRS-ECU, airbag modules (driver’s sear and front passenger’s seat), clock springs, front
impact sensors, side impact sensors
•90ºC or above : Pre-tensioner seatbelts
3. The component parts of the SRS airbag system or seatbelt pre-tensioner system, and parts relating to these
systems, must always be inspected and serviced by a Mitsubishi dealer.
4. Service personnel must read the relevant service manuals (particularly, Section 52B – SRS Airbags) carefully and
thoroughly, before inspecting or servicing the component parts of the SRS airbag system or seatbelt pre-
tensioner system, and parts relating to these systems.
Page 155 of 364

LAYOUT DIAGRAMS - ENGINE COMPARTMENT1-5
A-31 (2-black) Front ABS sensor (RH)
A-32 (4-black) Dummy connector
A-33 (4-black) Headlamp ASSY (LH) (except discharge
headlamps)
(8-black) Headlamp ASSY (LH) (discharge
headlamps)
A-34 (2) Intercooler water spray motor
A-35 (2-black) Fog lamp (LH)
A-36 (2-black) Condenser fan motor
A-37 (2-grey) Condenser fan motor
A-38 (1-black) Power steering fluid pressure switch
A-39 (1-black) A/C compressor (vehicle with manual
A/C, fully automatic A/C) or dummy
connector (vehicle with heater)A-40 (2-black) Fog lamp (RH)
A-41 (4-black) Headlamp ASSY (RH) (except discharge
headlamps)
(8-black) Headlamp ASSY (RH) (discharge
headlamps)
A-42 (2-brown) Dual pressure switch (vehicle with
manual A/C, fully automatic A/C) or
dummy connector (vehicle with heater)
A-52 (2-yellow) Front impact sensor (RH) (vehicle not
fitted with front passenger airbag)
A-53 (2-yellow) Front impact sensor (LH) (vehicle not
fitted with front passenger airbag)
Front harness (LH)
Page 160 of 364

LAYOUT DIAGRAMS - INSTRUMENT PANEL1-10
C-01 (4) Register (vehicle with heater, manual
A/C)
C-02 (2-black) Front passenger airbag module (squib)
C-03 (7) Internal / External air switching damper
motor
C-04 (7) Instrument panel harness / A/C harness
junction (vehicle with heater, manual A/C)
(13) Instrument panel harness / A/C harness
junction (vehicle with fully automatic A/C)
C-05 (2) Air thermo sensor (vehicle with fully
automatic A/C)
C-06 (13) J/C (5)
C-07 (22-grey) J/C (5)
C-08 (6) Motor & potentiometer for air mix door
(vehicle with fully automatic A/C)
C-09 (2) Heater water temperature sensor (vehicle
with fully automatic A/C)C-10 (6) Motor and potentiometer for blower
switching damper (vehicle with fully
automatic A/C)
C-13 (4) Clock
C-14 (4) Hazard switch
C-15 (6) Blower switch (vehicle with heater ,
manual A/C)
C-16 (12-black) Heater control unit (vehicle with heater) or
A/C ECU (vehicle with manual A/C)
C-17 (20-black) A/C ECU (vehicle with fully automatic
A/C)
C-18 (16-black) A/C ECU (vehicle with fully automatic
A/C)
C-20 (22-blue) Instrument panel harness / Control
harness junction
C-21 (10-grey) Instruction panel harness / Control
harness junction
INSTRUMENT PANEL
Connector Symbol
A/C harness
Control harness
Floor harness (LH) Front door harness (LH)Front harness (LH)Tweeter sub-harnessInstrument panel harness Front passenger side
Page 164 of 364
LAYOUT DIAGRAMS - INSTRUMENT PANEL1-14
C-201 (6) Ignition switch
C-202 (7) Key reminder switch
C-203 (10) Column switch
C-204 (4-yellow) Clock spring
C-205 (6) Clock spring
C-206 (1) Horn switch
C-207 (2) Driver’s airbag module (squib)
C-208 (13) Instrument panel harness / J/B junctionC-209 (14) Instrument panel harness / J/B junction
C-210 (6) Instrument panel harness / J/B junction
C-211 (1-black) Instrument panel harness / J/B junction
C-212 (28) Instrument panel harness / J/B junction
C-213 (5) Demister relay
Instrument panel (cont’d)
Connector Symbol
Steering wheel
Clock spring
Instrument panel
harness
Page 174 of 364
INDIVIDUAL PART INSTALLATION POSITIONS - ECU2-4
O
2sensor
connector
Ext. air temp. sensor
Coolant
temperature sensor
Intake cam
position sensor
Exhaust cam
position sensor
(Vehicle not fitted with front passenger airbag)
O2 sensor
Front impact sensor
Steer sensor
Sunlight sensor
Heater water temperature sensor
Air thermo
sensor
Blower
ASSY
Cabin
temperature sensor