MITSUBISHI COLT 2006 Service Repair Manual

TECHNICAL FEATURES
GENERAL00-16
BRAKE BOOSTER
9-inch brake booster has been installed. The brake
booster employs a variable amplification ratio mech
-
anism that varies amplifications ratios so that even
small pedal force can provide great breaking force.
PARKING BRAKE

The parking brake is of a mechanical rear-wheel act-
ing type, and its operation utilises a parking brake
lever.
AC601277
Parking brake lever
Parking brake cable
AB

TECHNICAL FEATURES
GENERAL00-17

Employment of the parking brake pedal clears front
centre space to allow a walk through design.
PUSH-ON/PUSH-RELEASE type pedal has been
installed for easier operation.
The parking brake pedal retreat suppression mecha-
nism that restraints the retraction of the brake pedal
during collision has been adopted in order to reduce
the shock to the driver's feet. The mechanism of the
parking brake pedal is basically the same as that of
the brake pedal.
AC506311AB
Parking brake cable cover
Parking brake pedal assembly


NO TE: For more informatio n about brake peda l
retreat suppre ssion mech anism, refer to GROUP
35A, Brake Pedal
P.35A-6.

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
GENERAL00-19
ACTIVE SAFETY
M2000031000528
ANTI-SKID BRAKE SYSTEM (ABS)
The ABS ensures directional stability and controlla-
bility during hard braking.
For vehicles with this type of ABS, 4 sensors are
installed on front and rear wheels allowing independ
-
ent left and right control.
AC601759AB

ABS warning lamp
Brake warning lamp
ABS warning lamp
Brake warning lampBrake warning lamp
ABS warning lamp
Stop lamp switch
Hydraulic unit and ABS-ECUWheel speed sensor Wheel speed sensor
Diagnosis connector
CONSTRUCTION DIAGRAM
The syst
em has the following features:
•EBD (Electronic Bra ke-fo rce Distributio n system)
co ntrol has been added to provide t he ideal brak
-
in g force for th e rear wheels.
•Magnetic en coder for whee l speed de tection ha s
bee n inst alled as a se nsing device instead of the
rotor .
•For wiring h arness saving an d secure data com-
municatio n, CAN* b us h as be en ad opted a s a
too l of communication with another ECU.
NO TE: *: Fo r more information abo ut CAN (Control-
ler Area Netwo rk), re fer to GROUP 54C, Genera l
Information
P.54C-2.

TECHNICAL FEATURES
GENERAL00-20
ELECTRONIC BRAKE FORCE DISTRIBU-
TION SYSTEM (EBD) CONTROL
In ABS, electronic control is used so the rear wheel
brake hydraulic pressure during braking is regulated
by rear wheel control solenoid valves in accordance
with the vehicle's rate of deceleration, and the front
and rear wheel slippage which are calculated from
the signals received from the various wheel speed
sensors. EBD control provides a high level of control
for both vehicle braking force and vehicle stability.

TECHNICAL FEATURES
GENERAL00-21
SYSTEM CONFIGURATION DIAGRAM
AC314168
Stop lamp switch
Front-right wheel speed sensor Rear-right wheel speed sensor
Rear-left wheel speed sensor Front-left wheel speed sensor
ABS-ECU power supply Engine-CVT-ECU
Front-right solenoid valve (out)
Front-right solenoid valve (in)
Front-left solenoid valve (out)
Front-left solenoid valve (in)
Rear-right solenoid valve (out)
Rear-right solenoid valve (in)
Rear-left solenoid valve (out)
Rear-left solenoid valve (in)
ABS-ECU
Hydraulic
unit Rear-right
wheel speed
sensor
Front right
wheel speed
sensor
Front-left
wheel speed
sensor Rear-left
wheel speed
sensor
Front-right wheel (FR)
Front-left wheel (FL) Rear-right wheel (RR)
Rear-left wheel (RL)
Stop lamp switch
AB
Brake warning lamp
ABS warning lamp
Diagnosis connector
The syst em has the following features:
•Because the system p rovides t he optimum rea r
wheel braking force regardless of vehicle load
co ndition a nd the condition of the road surface,
the system reduces the required pedal depre s
-
sion fo rce, particularly wh en th e veh icle is h eavily
lo aded o r driven on road surfaces with high fric
-
tional coef ficients.
•Because the duty place d on th e front brakes is
redu ced, th e increase in p ad tempe rature can be
controlled d uring brake s ap plication to impro ve
the we ar resist ance characteristics of the pad.
•Contro l valves such as the propo rtioning valve
are not required.

TECHNICAL FEATURES
GENERAL00-22
ACTIVE STABILITY CONTROL SYSYEM
(ASC)
The active stability control system (ASC) has been
installed to the M/T vehicle.
AC601760AB
ABS warning lamp
Diagnosis connector Stoplamp switch
Steering wheel sensor
Wheel speed sensor Wheel speed sensor
G and yaw rate sensorParking brake switch
ASC OFF switch ASC indicator lamp
ASC OFF indicator lamp
Brake warning lamp
Combination meter
Brake fluid level sensor ABS/ASC-ECU
Engine-ECU
Magnetic encoder for
wheel speed detection Magnetic encoder for
wheel speed detection
•The
active st ability control syst em (ASC) has the
st ab ility control and t he traction control (TCL)
fun ctio ns. By the integra ted control with th e
ant i-lock b rake system, the system stabilizes th e
ve hicle attitu de and at the same time secures the
drivin g force.
•When the st ability control fun ction dete rmin es
tha t the vehicle is in a dangerou s condition, it
redu ces the e ngine outpu t and a pplies b rake
force to f our wheels indepe ndently to control th e
ve hicle be haviour, avoiding the critical state.
•The tract ion control (TCL) fun ction prevent s the
drivin g wheel slip on a slippery road sur face,
ensurin g easy st artup, an d at the same time,
secure s proper drivin g force and improves ste er
-
in g perfo rmance du ring cornering acce leration.
•Fail-safe functio n assures the security.
•Serviceability imp rovement
•For wiring h arness saving an d secure data com-
municatio n, the CAN* co mmunicatio n has been
ado pted a s a t ool o f commun ication with ano ther
ECU.
NO TE: .
•*For more informatio n about CAN (Con troller
Area Net wor k), refe r to GROUP 54C
P.54C-2.
•ABS and ASC are controlled by ASC-ECU.

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
GENERAL00-24
PASSIVE SAFETY
M2000032000628
IMPACT SAFETY BODY, RISE*
NOTE: RISE*: Reinforced Impact Safety Evolution
The front and rear structures to absorb high energy,
and the highly tough cabin structure reduce the risk
of passenger injuries at front-, rear-, and side-impact
collisions, secure the space for life protection, and
facilitate rescuing passengers.
AB201266
AB201267AB502015
AB400214
AB
1
2
4
Front sidemember inner
Front sidemember outer
B AA
B
Section B – B Section A – A
Front sidemember inner
Front sidemember outer
3
1.
The front side of the front sidemember , for which
oct agonal section structure is a dopted, has been
enlarged for improved rigidity .
2.The rear side o f the fro nt sidememb er, for which
8-shape cross section structu re is adop ted, has
bee n enlarged f or improved rig idit y.
3. The dash side brace ha s been manufactured a s
an unit in ord er to strength en the joint betwee n
the front side member and the front pillar , increas
-
in g the rigid ity of the e ntire body .
4.The inst allation po sition o f the steering gea rbox
has bee n lowere d, and the sidememb er from the
fron t to the re ar has been straigh tened in orde r to
improve rig idit y of t he ent ire body.

TECHNICAL FEATURES
GENERAL00-25
SUPPLEMENTAL RESTRAINT SYSTEM
(SRS*)
NOTE: *SRS: Supplemental Restraint System
The SRS is designed to supplement the front seat
belts. It eliminates or reduces injury to the front pas
-
senger(s) by deploying air bag(s) in case of a
head-on collision.
DRIVER’S SEAT/PASSENGER’S SEAT SRS AIR BAG
AC208256AB
Driver's seat
Passenger's seat
Driver's and
pa sse nger's SRS a ir bag s have be en
inst alled to all the vehicle s as st andard to sof ten
blows to the front pa sseng ers' head and che st areas d
uring a fro nta l coll ision , i n cre asin g sa fety a gainst an
acciden t with a frontal collision.
SEAT BEL T WITH PRE-TENSIONER
AC208129
AC207230AC207336
ACPipe Gear
Ball Spool
Gas generator
The seatbelt incorpo
rating the pre -tensioner auto-
matically winds the seatbelt upo n front impact to
reduce forward shif ting of the passenge r.
Upo n front impact the pre-ten sion er ig nites the g as
generat or and emits gas with the SRS-ECU signal
whe n t he front imp act sen sor , att ached to the front of the bo
dy, det ects a n imp act t hat excee ds t he pe rmis
-
sible limit. By th is gas p ressure, a ball moves in th e
p ipe and rot ates the ge ar. This gear rotation operate s
the spool in the direction of ret racting the belt, and
the webbing is retr acted.