2006 MITSUBISHI COLT power steering

PRODUCT FEATURES
GENERAL00-3
PRODUCT FEATURES
M2000005000475

•COLT has been equipped with the new 1,500 mL
aluminium die-cast engine (4A9-engine) for fur
-
ther refinements of comfort driving, excellent
power performance, fuel economy, and ecology
performance.

•The body and suspension of COLT RALLIART
Version-R have been thoroughly tuned to
increase the 4G1-engine output which enables
dynamic driving.
•The robust image suited for the dynamic driving
has been adopted for the appearance.
SPORTY AND STYLISH DESIGN
•Bucket-like front seats sion-R>
•Sport seats exclusive to the models with turbo-
charger
•15-inch aluminium wheel
•High-contrast combination meter ART Version-R, LS, VR-X (M/T) >
•Robust appearance by new shaped front bumper
adaptation and rear bumper change Version-R>
•Black overfender
•16-inch aluminium wheel
ACTIVE DRIVING AND HIGH QUALITY
•For 4A9-engine, the aluminium die-cast cylinder
block has been installed for weight reduction of
the vehicle.
•For 4G1-engine, turbo-charger model has been
introduced to increase output and torque,
enhancing sporty image.
•Sporty driving has been ensured by the
"GETRAG" 5-speed manual transmission (floor
shift).
•The suspension has been tuned to improve cor-
nering and stability at high speed. Version-R>
•A strut tower bar has been adopted to improve
the body rigidity.
•Electric power steering system has been
improved and EPS-ECU has been additionally
equipped with the return control logic, resulting in
superior steering wheel return control and better
steering feel equal to or better than that for other
models with hydraulic power steering.

TECHNICAL FEATURES
GENERAL00-18
STEERING
M2000040000140
AC403622

Steering wheel
Steering wheel
Steering column assembly
Torque sensor
Tie-rod end
Yoke-bearing
Crossmember
Steering gear and linkage
Electric power
steering-ECU
Motor
AE
Motor
Electric power
steering-ECU
Steering gear and linkage
Crossmember
Tie-rod end
Torque sensor
Transmission
control cable
Steering column assembly
Selector lever assembly
Dash panel cover
Dash panel cover
Pinion -driven electric p owe r ste ering system (ESP*)
with further improvement s has been adopted. EPS*
has been improved and EPS-ECU has been addi
-
tionally equipped with the return contro l logic, resu lt-
ing in superior stee ring whe el ret urn co ntrol and
better steering fee l equ al to or bett er than that for
other vehicles with hydraulic power steering.
NO TE: *EPS: Electronic Control Power S teerin g
For the mode ls with turb o-charge r, t he qu ick ste ering
gear rat io an d turbo -tuned a ssist chara cteristics
increase sporty tast e.

TECHNICAL FEATURES
GENERAL00-23
SYSTEM CONFIGURATION DIAGRAM
AC600637AC
Combination meter
ABS warning lamp 
· Brake warning lamp
· Active stability control indicator lamp
· Active stability control OFF indicator lamp
Diagnosis
Connector
Control solenoid valve (FR) OUT
Control solenoid valve (FR) IN
Control solenoid valve (FL) OUT
Control solenoid valve (FL) IN
Control solenoid valve (RR) OUT
Control solenoid valve (RR) IN
Control solenoid valve (RL) OUT
Control solenoid valve (RL) IN Suction valve (FR)
Suction valve (FL)
Cut valve (FR)
Cut valve (FL) Pump motor
Active stability
control system-ECU
Front-left wheel speed sensor
Rear-left wheel speed sensor
Front-right wheel speed sensor Rear-right wheel speed sensor
Master cylinder pressure sensor Stop lamp switch
Parking brake switch
Brake fluid level switch
Power supply to active stability
control system-ECU Steering wheel sensor
G and yaw rate sensor
Engine-ECU
Steering wheel sensor
Front-right wheel (FR)
Wheel
speed
sensor
Engine-ECU
G and yaw rate sensor
Parking
brake
switch Rear-right wheel (RR)
Wheel
speed
sensor
Stop lamp switch
Hydraulic
unit Wheel speed
sensor Rear-left
wheel (RL)
Wheel speed
sensor
Front-left wheel (FL)
Note
: CAN-bus line

TECHNICAL FEATURES
GENERAL00-28
ENVIRONMENTAL PROTECTION
M2000027000279
Mitsubishi has given careful consideration to protec-
tion of natural resources and the environment in the
vehicle. Environmentally friendly features are shown
below.
IMPROVEMENT ON RECYCLING EFFICIENCY
ClassificationMain Components
Components made
of recycled
materialsChip materials produced during manufacturing process has been reused as the
following components: Door inside handle, bu mper, radiator grille, instrument panel,
door trims, or floor padding.
Waste materials produced by other i ndustries have been reused as the following
components: Engine oil level gauge, air filter casing, and sound absorbing materials
for dash panel
Components made
of materials which
can be easily
recycledThermoplastic resin has been utilised as the following components: Inside door
handle, bumper, radiator grille, instrument panel, door trim
Thermoplastic resin has been utilised as t he following components: Vacuum hose for
engine control, air intake hose, hood weather strip, tailgate opening weather strip
REDUCTION OF MATERIAL BURDEN ON ENVIRONMENT
ItemMain Components
Elimination of
environmental
burden materialsLead-free materials have been utilised as the following components: Radiator, fuel
tank, power steering oil pressure hose, el ectrodeposition paint for body, glass ceramic
print, heater core, battery terminals, wiring harness
Non-asbestos material has been used for engine gaskets.
PVC(polyvinyl chloride)-free materials ha ve been used for the waterproofing film.
Prevention of
ozone depletionAir conditioner filled with new refrigerant (HFC 134a) has been installed.
Prevention of air
pollutionEmployment of a metal cylinder head gasket reduces the volume of incomplete
combustion generated between the cylinder block and cylinder head, and suppresses
the level of unburned hydrocarbon (HC).
SERVICEABILITY AND RELIABILITY
M2000028000528
MULTI USE TESTER-III (M.U.T.-III) SUB
ASSEMBLY
Comprehensive improvements have been made to
the M.U.T.-II, a tester for diagnosing problems with
the electronic control system. For easier servicing,
the newly developed M.U.T.-III has greatly improved
functions and is much easier to use. The M.U.T.-III
expands the functions of the M.U.T.-II in the following
ways:
1.CAN* bus diagnosis
•Auto diagnosis function for the CAN commu-
nications bus line is added.
NOTE: *CAN: Controller Area Network (for further
details, refer to GROUP 54C
P.54C-2).

TECHNICAL FEATURES
GENERAL00-29
IMPROVED SERVICEABILITY
•Employment of an automatic hydraulic timing belt
tensioner offers timing belt reliability, reduced
operating noise, and better serviceability. <4G1>
•Wiring harness section of the crank angle sensor
has been moulded integrally with the timing belt
cover, improving serviceability and reliability.
<4G1>
•Due to the adoption of the timing chain and the
timing chain tensioner, maintenance-free and reli
-
ability have been improved. <4A9>
•Since adoption of unvolatile memory (EEPROM*)
helps the learned value not to be initialised when
the battery terminal or connector of the control
unit is disconnected, maintainability can be
improved.
NOTE: *EEPROM: Electrical Erasable Programma-
ble ROM (information to be memorised can be
electronically written into and erased from ROM)
•Since the adoption of electric power steering
makes hydraulic pipes and oil pumps unneces
-
sary, maintainability can be improved.
•Employment of operative A/C piping layout and
refrigerant leak detection system enhances serv
-
iceability.

GROUP 37
POWER STEERING
CONTENTS
GENERAL INFORMATION . . . . . . . .37-2
CONSTRUCTION DESCRIPTION . . .37-5
STEERING WHEEL . . . . . . . . . . . . . . . . . . 37-5
STEERING SHAFT AND COLUMN . . . . . . 37-5
ELECTRICAL POWER STEERING . .37-7
GENERAL INFORMATION . . . . . . . . . . . . . 37-7
STEERING GEAR . . . . . . . . . . . . . . . . . . . . 37-9
MOTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37-9
ELECTRIC POWER STEERING-ECU . . . . 37-10
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . 37-11

GENERAL INFORMATION
POWER STEERING37-2
GENERAL INFORMATION
M2370000100851
Electric power steering system has been adopted for
all models in order to ensure an optimised steering
feeling.
FEATURES
•Improved fuel consumption by reduction of
engine load, and weight saving by decrease of
the number of parts have been achieved with the
introduction of the electric power steering system.
•3-spoke type steering wheel integrated with an
SRS airbag has been adopted.
•Impact-absorbing mechanism and tilt steering
mechanism have been adopted.
SPECIFICATIONS
ItemSpecifications
Vehicles with
14-inch wheelsVehicles with
15-inch wheelsVehicles with
16-inch wheels
Steering wheelTy p e3-spoke type
Outside diameter mm370
Maximum number of turns3.43.22.6
Steering columnColumn mechanismShock absorbing mechanism and tilt steering
mechanism
Power steering typeElectric powered type
Steering gearTy p eRack and pinion
Stroke ratio (Rack
stroke/Steering wheel
maximum turning radius)44.1550.46
Rack stroke mm150143130
Steering angleInner wheel41 ° 40’39 ° 00’34 ° 10’
Outer wheel35 ° 30’33 ° 40’30 ° 00’

GENERAL INFORMATION
POWER STEERING37-3
CONSTRUCTION DIAGRAM
AC405883AB
Steering wheel
Steering column assembly
Selector lever assembly
Electric power
steering-ECU
Motor
Torque sensor
Tie-rod end Steering gearDash panel cover