2006 MITSUBISHI COLT brake fluid

CONSTRUCTION DESCRIPTION
ANTI-SKID BRAKE SYSTEM (ABS)35B-6
CONSTRUCTION DESCRIPTION
SENSORSM2351001000427
WHEEL SPEED SENSORS AND MAG-
NETIC ENCODER FOR WHEEL SPEED
DETECTION
AC601358
Rear wheel speed sensor
Front wheel speed sensor
Front Rear Rear
Encoder for wheel
speed detection Encoder for wheel
speed detectionRear wheel speed sensor
Encoder for wheel
speed detection
AB
Wheel spee d se nsor is a kin d of a pulse gen erator
consisted of
a mag netic encoder (a pla t e on which
north an
d so uth po le sides of th e mag net are
arrange
d alte rnately) for wh eel speed detection
which rot
a tes at the same speed of the wheels, and a
spee
d sen s or (semicon duct o r se nsor), send s fre
-
quency pulse sig nals in proportion to wh eel spee d.
Front wheel sp eed sensor co nsist s of a front whe e l
spee
d sen s or secu red on the knuckle, and a mag
-
netic encoder for wheel spee d dete c tio n fitt ed to th e
inside o
f the fro n t wheel bearing. Rear wh eel speed
sensor consist
s o f a rear wh eel speed sensor
secured on
the re ar hub, and a magn etic encoder fo r
whe
e l speed detection press fit t ed to the rear hub
inner ring.
ABS-ECU
M23510030 0025 2
•By integrating ABS-ECU into the hydraulic unit ,
no
more wiring h a rnesses for sending signal that
ope
rates the solen o id valve an d pump mo tor is
requ
ired, assuring high er reliability .
•Self-diag nostic p r ograms an d memory functions
are
integrated into ABS-ECU. If any malfunction
is dete
c ted by th e se lf-diagnostic function,
ABS-ECU activates
a fail-s afe function and illumi
-
nates ABS warning lamp and brake warning
la
mp
*.
NO TE: *: ABS-E CU illuminates the brake warning
l
a
m
p as EBD c o nt ro l wa rn in g la m p .
•ABS-ECU detects vehicle speed from the wheel
speed sensor signal, reco
gnizes the whee l rot a
-
tion, estimates the wheel slip condition based on
the
preprog rammed algorithm, a nd the n co ntrols
th
e soleno id valve in the hydr aulic u n it so th at the
wheels d
o not lock.
ABS FLUID PRESSURE CONTROL
FOUR-WHEEL CONTROL
ABS fluid pressure is controlled indep enden tly for
four whee
ls.

CONSTRUCTION DESCRIPTION
ANTI-SKID BRAKE SYSTEM (ABS)35B-7
EBD FLUID PRESSURE CONTROL
AC208548AB
Ideal distribution curve when
seated by fixed personsEBD operating conceptual design
Rear braking force
Ideal distribution curve when seated by one persons Braking force distribution curve
by the existing proportioning valveBraking force distribution
by EBD control
Front braking force
Braking Force
Improved
EBD control is
activate d within the lower slip ratio
area where
ABS is disab l ed. ABS-ECU calculates
vehicle
decelera t ion a nd slip amou nt of th e four
whe
e ls based on the wheel sp eed senso r signal. If
the rear
wh eel speed dif f ers f r om th e ve hicle speed
by a
cert ain level or more, ABS-ECU boost, holds,
and de
pressurises the rea r wh eel contro l so leno id
valve in the h
y drau lic unit, and then a d just s rear
whe
e l b r ake fluid pressure fa ir ly close to an ideal dis
-
tribution curve.
INITIAL CHECK
ABS-ECU inter nally activates the self-d iagno stic
function. ABS-ECU illuminates
ABS warning l a mp for
3 seconds (in
c lu ding the in itia l check)
* after th e ign i-
tion switch is turned ON. If a n y malf unction is
detected, ABS-ECU cont
inues illuminating ABS
war
n ing lamp and disables ABS cont rol.
NOTE: *: ABS warning lamp may st ay ON af ter the
ignition
switch is turned ON un til t he st artu p ve hicle
spee
d reaches approximately 10km/h . As far as
ABS-ECU memorizes any d i agn osis code related t o
the
whee l speed sen s or malfunct i on record ed d u ring
previous ignition ON st atus, ABS-ECU continues illu
-
mina ting ABS warn ing lamp until it verif i es that th e
malfunct
i on for tha t co de is resolved (S t a rtup che ck).
STARTUP CHECK
When th e st artup veh i cle sp eed re ache s app roxi-
mately 10 km/h, ABS-ECU performs the following
checks.
•Motor, solen o id valve check (onl y i n ini t ial st ar-
tup*)
Operat es the motor relay in ECU and checks the
pump motor op eratio n. At the same time,
ABS-ECU sequentially e nergizes each solenoid
valve in a ve ry sh ort perio d and ch ecks the valve
ope ration .
NOTE: *: Initia l st artu p ind i ca tes a first st artup af ter
the
system has st arted .
•Whee l speed sensor check
ABS-ECU che cks for a n y whee ls that ha ve no t
received whee l sp eed sens or signal from the
st artu p.
CONSTANT CHECK
ABS-ECU con s t antly ch ecks th e following item.
•ABS-ECU
Performs se lf-diagnosis in ECU.
•ECU power supply
Checks if ECU po we r sup p ly volt ag e reaches within
the operat ional range .
•Whee l speed sensor
•Monitors the ou tput volt age of the sensor sig-
nal wiring ha rness an d che c ks for a bnormal
output
volt ag e (ope n/sho r t circuit).
•Checks fo r any wheels tha t do n o t send pu lse
sig
nal while th e ve hicle is in motion.
•Checks if wheel spee d which is abno rmally
high
er or lo we r than the vehicle speed is
inpu
t.
•Pump mo tor and solenoid valve
Checks tha t ABS-ECU outp u t signal and t he ope rat-
ing co ndition of the pump motor an d so leno id
valve agree
with ea ch ot her .

GENERAL INFORMATION
CLUTCH21-2
GENERAL INFORMATION
M2210000100375
Due to the addition of vehicles with M/T, the dry sin-
gle plate diaphragm spring type is adopted to the
clutch and the hydraulic type is used for control sys
-
tem.
SPECIFICATIONS
ItemSpecification
Transmission modelF5MGAF5MGB
Clutch disc typeDry single plate type
Clutch disc facing diameter OD x ID mm200 × 140216 × 144
Clutch cover typeDiaphragm spring type
Clutch cover setting load N3,600 − 4,1005,400 − 6,000
Control systemHydraulic type
Clutch fluidMitsubishi genuine diamond queen brake fluid super 4
CONSTRUCTION DIAGRAM
AC600647
Clutch pipe assembly A
Clutch pipe assembly B
AB
Reservoir hose Clutch pedal assembly
Clutch release
cylinder Clutch master
cylinder

TECHNICAL FEATURES
GENERAL00-15
BRAKE
M2000024000270
SERVICE BRAKE
Brake system with high reliability and durability have
achieved distinguished braking performance.
AC601327AB

Brake booster (with variable
boosting mechanism)
Master cylinder Front disc brake
Hydraulic unit
(Integrated with ABS-ECU)
Rear drum brake
Brake booster (with variable
boosting mechanism)
Master cylinder
Front disc brake
Hydraulic unit
(Integrated with ABS-ECU) Rear disc brake
BRAKING PERFORMANCE
•Brake booster with 9-inch variab le amplificatio n
ratio me chanism by which greate r braking f orce
ca n be o bta ined with a less ped al pressure has
bee n inst alled (with b rake assist function).
•14-inch disc bra ke is inst alled on the front
wheels.
•15-inch disc bra ke is inst alled on the front
wheels.
•8-inch leading trailing type drum brake is installed
on the rear wheels.
•14-inch disc bra ke is inst alled on the rear
wheels.
ST ABILITY
•4-wheel anti-skid brak ing system (4ABS) is
ado pted to pre vent slippin g cause d by the vehicle
wheels locking up, in order t o maint ain a ppropri
-
ate bra kin g dist an ce, an d also t o ma inta in ve hicle
st ab ility an d steering function.
•Electronic br ake-force distribution (EBD) is
ad opted to m ain ta in th e max imu m am ount of rea r
braking force even whe n the vehicle's loa d is var
-
ie d.
•Diag onal split (X-type) brake fluid line is adopte d.
•V entilate d discs have bee n adopted to front
brakes to improve anti-fading per formance.
•A brake pe dal retraction suppression structu re
tha t restr ains the re traction of the brake pe dal
and reduces the shock to th e feet of the d rive r in
the even t of a frontal collision ha s been ado pted.
SERVICEABILITY
•Diagnosis function is adopted for the ABS system
in order t o make inspe ctio n easier .
•For the fron t disc bra kes, brake disc separate d
fron t hub is a dapted to make removal a nd instal
-
la tion easier .
•ABS-ECU and hydraulic unit have been inte-
grated to make them mor e comp act and lighte r.

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

ComponentNo.Function
SensorWheel speed sensor1Sends alternating current signals at frequencies which are
proportional to the rotation speeds of each wheel to the
active stability control system-ECU
Magnetic encoder for wheel
speed detection2The wheel speed sensor is a pulse generator. When the
magnetic encoder for wheel speed detection (a plate on
which north and south pole sides of the magnets are
arranged alternately) rotates, it outputs frequency pulse
signal in proportion to each wheel speed.
Stop lamp switch3Sends a signal to the active stability control system-ECU
to indicate whether the brake pedal is depressed or not.
Parking brake switch4Outputs the signal indicating whether the parking brake
lever is pulled or not to ASC-ECU.
Brake fluid level switch5Outputs the signal indicating whether the brake fluid is
filled to the lowest limit level or not to ASC-ECU.
G and yaw rate sensor6Detects the lateral acceleration and the yaw rate for the
vehicle. Then it sends a signal through the CAN bus line to
the active stability control system-ECU.
Steering wheel sensor7Detects the steering wheel angle, and sends a signal to
the active stability control system-ECU through the CAN
bus line.
ASC OFF switch8Outputs the ASC ON/OFF signal to ASC-ECU.
Pressure sensor9Is incorporated in the hydraulic unit, and informs the active
stability control system-ECU of the brake fluid pressure in
the master cylinder.
ActuatorHydraulic unit10Drives the solenoid valves and pump motor according to
signals from the ABS/active stability control system-ECU in
order to control the brake hydraulic pressure for each wheel.
ABS warning lamp11Illuminates in response to signals from the active stability
control system-ECU when a problem develops in the
system.
Brake warning lamp12Illuminates in response to signals from the active stability
control system-ECU when a problem develops in the EBD
system or the brake fluid level is low.
Active stability control system
(ASC) indicator lamp 13Receives a signal from the active stability control
system-ECU, and flashes to inform the driver that the
system is operating, or illuminates to inform the driver of
system shutdown.
ASC OFF indicator lamp14Informs the driver of the ASC shutdown by illuminating
with the signal from ASC-ECU.
Diagnosis connector15Sets the diagnosis codes and allows communication with
the M.U.T.-III.
Engine-ECU16Receives a signal from the active stability control
system-ECU to control the engine output.
Anti-skid Brake/Active Stability Control
System control unit (ABS/active stability
control system-ECU)17Controls actuators (described above) based on the signals
coming from each sensor.
Controls the self-diagnostics and fail-safe functions.
Controls the diagnostic function (M.U.T.-III compatible).
GENERAL
ACTIVE STABILITY CONTROL SYSTEM (ASC)35C-3

GENERAL
ACTIVE STABILITY CONTROL SYSTEM (ASC)35C-4
SCHEMATIC 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