Page 5 of 364

GENERAL –TROUBLESHOOTING FOR INSPECTIONS, MODEL LINE-UP,
RELEVANT VEHICLE NUMBERS00-1
SECTION 00
GENERAL
CONTENTS
Inspection guidelines and
troubleshooting..........................................1
Model line-up ..............................................1Relevant vehicle numbers ........................1
Inspection guidelines and troubleshooting
With the introduction of new settings for the MB992006 (Extra Fine Probe) special tool, the guidelines for inspecting the
connector have been changed. Other servicing guidelines remain unchanged.
Making an inspection with the connector
attached (so the electrical circuit is complete)
The test bar should be inserted from the harness side. If the control
unit or the connector is too small, and the test bar cannot be
inserted, do not attempt to force it in. Instead, use the MB992006
(Extra Fine Probe) special tool.
Model line-up
Note
● Indicates a new model, indicates a special model, X indicates a discontinued model.
Relevant vehicle numbers
GH-CT9A: CT9A-0400001 ~
Page 111 of 364

44G6 – GENERAL INFORMATION/ SERVICING SPECIFICATIONS
General Information
The 4G63 MIVEC T/C engine fitted in the Lancer Evolution IX incorporates the following changes with respect to the previous
4G63 T/C engine.
• Adoption of variable valve timing control system
• Modification to clearance gap in piston No.2 ring coupling
• Addition of air intake temperature sensor
• Addition of boost sensor
Vehicle Model List
Specifications
Servicing Specification Values
Name Vehicle model Engine type Exhaust capacity cc Specifications
Lancer Evolution IX CT9A 4G63-7 1,997 DOHC 16-valve
MIVEC – T/C
Item Specification
Bore x stroke 85 x 88
Total displacement cc 1,997
Combustion chamber shape Pentroof type
No. of cylinders 4
Valve mechanism Type DOHC
Intake valves 8
Exhaust valves 8
Lash adjuster Hydraulic
Rocker arm Roller follower type
Compression ratio 8.8
Fuel injection device Electronically controlled MPI
Ignition device Electronically controlled two-coil type
Alternator AC type (with IC regulator)
Starter motor Deceleration drive
g
Item Standard value Limit value
Cylinder head, valves
Valve spring : free height mm 50.4 49.4
Valve spring : perpendicularity 2º or less 4º
Pistons, connecting rods
No.1 0.03~0.07 0.1Piston rings : Clearance between ring and ring
groove mm
No.2 0.02~0.06 0.1
No.1 0.20~0.30 0.8Piston rings : Closed gap mm
No.2 0.30~0.45 0.8
Oil ring 0.10~0.40 1.0
Page 141 of 364

GENERAL INFORMATION - HOW TO READ THE WIRING DIAGRAMS0-3
Reading Layout Diagrams
The wiring layout diagrams give a clear and simple illustration of the connector positions and the routing of the wiring
harnesses at different points in the actual vehicle.
Indicates connector number.
The same connector number is used in the circuit diagrams, so that connector positions can be located easily.
The initial letter indicates the installation position of the connector, and the number that follows is the unique number for that
connector. In principle, the connectors are numbered in clockwise order in each layout diagrams, starting from the top left-hand side.
Example : A – 19Unique connector number (serial number)
Connector location code
A: Engine compartment D: Floor / Roof
B: Engine / Transmission E: Door
C: Instrument panel F: Tail gate
Indicates earth point.
The same earth numbers are used in the circuit
diagrams, so earth points can be located easily.
For details of earth points, refer to Section 2,
"Individual Part Installation Positions – Earth".
Indicates name of harness
Shows section covered with
corrugated tube.
The * symbol shows a standard
harness mounting point.
Indicates the external colour of the harness.
(Black, unless specified otherwise.)
R : Red
Y: Yellow
The number of connector pins and the connector colour (except
cream colour)* are indicated, so that they can be located easily.
Example : 2 – Black
*^: Typical connector colours:
Black, grey, red, blue, yellow, green, brown, etc.
Colour of connector pins(Cream colour, unless specified
otherwise)
Number of connector pinsA-15 (2) Fog lamp (RH)
A-16 (2-Black) Windshield washer motor
A-17 (2-Black) Headlamp (RH)
A-18 (2-Brown) Horn (LO)
A-19 (2-Green) Dual pressure switch
Indicates the device to which the
connector is connected.
Front
harness
Page 151 of 364
1-1
Section 1
Layout Diagrams
CONTENTS
General Layout Diagram ........................1-3
Engine Compartment .............................1-4
Engine / Transmission ...........................1-6
Instrument Panel...................................1-10Floor / Roof ...........................................1-16
Door .......................................................1-18
Boot Compartment ...............................1-20
Page 153 of 364
LAYOUT DIAGRAMS - GENERAL LAYOUT DIAGRAM1-3
Front
harness (RH)Control panelInstrument
panel harnessRoof harness
Floor harness (RH)
Battery
harness
Front harness (LH)
Front door
harness *Floor
harness (LH)Fuel harnessRear door harness *
Note :
1. This diagram shows the main wiring harnesses only.
2. The * symbol indicates that the harness is also fitted on the right-hand side.
General Layout Diagram
Page 162 of 364
LAYOUT DIAGRAMS - INSTRUMENT PANEL1-12
C-101 (1) Roof antenna
C-103 (14) Spare audio connector
C-104 (5) Sunlight sensor (vehicle with full auto
A/C)
C-106 (21) Combination meter
C-107 (22-grey) J/C (3)
C-108 (21-blue) Combination meter
C-110 (22-black) J/C (4)
C-111 (1) Spare connector for fog lamp switchC-112 (11-black) Remote control mirror switch
C-113 (6) Instrument panel harness / Roof harness
junction
C-114 (20) Instrument panel harness / Front door
harness (RH) junction
C-115 (25) Instrument panel harness / Front harness
(RH) junction
Instrument Panel (cont’d)
Connector Symbol
Driver’s side
Instrument panel harness
Page 163 of 364
LAYOUT DIAGRAMS - INSTRUMENT PANEL1-13
C-116 (13) Instrument panel harness / Floor harness
(RH) junction
C-118 (4) Stop lamp switch
C-119 (22-blue) J/C (2)
C-120 (2-black) Cabin temperature sensor (vehicle with
full auto A/C)
C-121 (12) Diagnosis connector
C-122 (16-black) Diagnosis connector
C-124 (22-yellow) SRS-ECU
C-125 (20-yellow) SRS-ECU
C-126 (2) Instrument panel harness/ Clutch switch
sub-harness junction
C-127 (2) Clutch switchC-128 (2) Tweeter (RH)
C-129 96) Fog lamp switch
C-130 (6-grey) Headlamp levelling switch
C-131 (9-grey) Instrument panel harness / Floor harness
(RH) junction
C-132 (2) Dummy connector
C-133 (11) Instrument panel harness / Control
harness junction
C-134 (6) ACD mode switch
C-138 (4) Generic spare connector
Roof
harness
Front harness (RH) Front door harness (RH)
Floor harness (RH)
Page 165 of 364
LAYOUT DIAGRAMS - INSTRUMENT PANEL1-15
C-214 (5) Blower relay
C-215 (15) Floor harness (RH) / J/B junction
C-216 (3) Roof harness / J/B junction
C-217 (4) Dummy connector
C-218 (4) Dummy connector
C-219 (4) Fuel pump relay 2
C-220 (4) Intercooler water spray relay
C-221 (4) Fuel pump relay 1C-222 (5) Power window relay
C-223 (2) Instrument panel harness / J/B junction
C-224 (20) ETACS-ECU
C-225 (24-grey) ETACS-ECU
C-226 (24) ETACS-ECU
C-228 (5) Steer sensor
(Front side)
Instrument panel harness
Dedicated fuse
Floor harness (RH)
Roof harness(Rear side)