wheel MITSUBISHI LANCER EVOLUTION X 2008 User Guide

GENERAL
BASIC BRAKE SYSTEM35A-2
GENERALM2350000100956
Brake systems with higher reliability and durability
have achieved distinguished braking performance.
FEATURES
.
IMPROVEMENT OF BRAKING PERFOR-
MANCE
•A 10-inch single brake booster with the variable
boost ratio mechanism has been used to assure
maximum braking force with less pedal pressure
in case of emergency. <Vehicles with ABS>
•In addition to the 10-inch single brake booster, a
small and long stroke-type master cylinder has
been adopted to achieve downsizing and secure
assist force.
•15-inch or 16-inch ventilated disc brakes have
been adopted for the front.
•8-inch leading trailing-type drum brake, 14-inch
or 16-inch solid disc brake has been adopted for
the rear.
.
IMPROVEMENT IN SAFETY
•The 4-wheel anti-lock brake system (4ABS) has
been installed to prevent slippage resulting from
the wheel lock and assure stable vehicle posture
and driveability.<Vehicles with ABS>
•A rear wheel early lock-prevention proportioning
valve has been used. <Vehicles without ABS>
•Electronic control braking force distribution sys-
tem (EBD) has been adopted to assure the maxi-
mum braking force independently of the
passenger's position in the vehicle. <Vehicles
with ABS>
•X-type piping of brake lines have been adopted
for the front and rear wheels.
•Audible wear indicators are used on the front and
rear brake pads to warn the driver of wear limit.
.
SERVICE QUALITY IMPROVEMENTS
•Diagnostic function has been adopted to ABS for
easier inspection. <Vehicles with ABS>
•Brake fluid reservoir, master cylinder, and brake
booster have been integrated for downsizing and
better serviceability.

GENERAL
BASIC BRAKE SYSTEM35A-4
SPECIFICATIONS
ItemSpecifications
Master cylinderTy p eTandem type
I.D. mm (in)20.6 (0.81)
Brake boosterTy p eVacuum type, single
Effective dia. of power cylinder mm (in)254 (10.0)
Boost ratioVehicles without ABS6.5 (Pedal pressure: 188N)
Vehicles with ABS6.5 (Pedal pressure: 92N)
8.5 (Pedal pressure: 156N)
Rear wheel hydraulic control typeVehicles without ABSProportioning valves
Vehicles with ABSElectronic control braking force
distribution system (EBD)
Front disc brakeTy p eVehicles with 16-inch wheelFloating caliper 1 piston
ventilated disc (V5-S57)
Vehicles with 18-inch wheelFloating caliper 1 piston
ventilated disc (V6-S57)
Disc effective dia ×
thickness mm (in)Vehicles with 16-inch wheel222 × 26 (8.7 × 1.02)
Vehicles with 18-inch wheel241.6 × 26 (9.5 × 1.02)
Cylinder I.D. mm (in)57.1 (2.25)
Pad thickness mm (in)10.0 (0.39)
Clearance adjustmentAutomatic adjustment
Rear drum brakeTy p eLeading trailing drum
Drum I.D. mm (in)203 (8.0)
Wheel cylinder I.D. mm (in)19.0 (0.75)
Lining thickness mm (in)4 (0.157)
Clearance adjustmentAutomatic
Rear disc brakeTy p eVehicles with 16-inch wheelFloating caliper 1 piston solid disc
(S4-S35)
Vehicles with 18-inch wheelFloating caliper 1 piston solid disc
(S6-S35)
Disc effective dia ×
thickness mm (in)Vehicles with 16-inch wheel226 × 10 (8.9 × 0.39)
Vehicles with 18-inch wheel258 × 10 (10.2 × 0.39)
Cylinder I.D. mm (in)34.9 (1.37)
Pad thickness mm (in)10.0 (0.39)
Clearance adjustmentAutomatic adjustment

CONSTRUCTION DESCRIPTION
BASIC BRAKE SYSTEM35A-8
FRONT BRAKEM2350003000602
Brakes with the following specifications have been
adopted for the front brakes.
•The 1-piston ventilate disc brake (V5-S57 <Vehi-
cles with 16-inch wheel> or V6-S57 <Vehicles
with 18-inch wheel>) has been adopted.
•An audible wear indicator that informs the driver
of application limit has been adopted onto the
front brake LH pads.
•The outer disc type brake disc which can be tight-
ened together with the wheel has been intro-
duced for better serviceability.
.
DISC BRAKE DESIGNATION
AC609316
AC201769
Wear indicator Brake discPad Normal
AB
At wear limit
<15-inch disc brake (V5-S57)>
<16-inch disc brake (V6-S57)>
No.ItemContents
1Brake disc typeV: Ventilated
S: Solid
2Brake size
(Minimum applicable
disc wheel)
4: 14"
5: 15"
6: 16"
3Number of pistonsS: 1 (Floating type)
4Piston size
(Rounded integral
value)
35: φ 34.9 mm
57: φ 57.1 mm
V 6 - S 57
1 2 3 4
AC505124

CONSTRUCTION DESCRIPTION
BASIC BRAKE SYSTEM35A-9
REAR BRAKEM2350004000616
<Vehicles with rear drum brake>
8-inch leading trailing-type drum brakes have been
adopted for the rear brakes in order to provide stable
braking force at all times both when moving forward
and reverse.
<Vehicles with rear disc brake>
Brakes with the following specifications have been
adopted for the rear.
•The 1-piston solid disc brake (S4-S35 <Vehicles
with 16-inch wheel> or S6-S35 <Vehicles with
18-inch wheel>) has been adopted.
*
•An audible wear indicator that informs the driver
of application limit has been adopted onto the
brake pads.
•The outer disc type brake disc which can be tight-
ened together with the wheel has been intro-
duced for better serviceability.
NOTE: *For the brake disc name, refer to FRONT
BRAKE
P.35A-8.
AC609282
AC609315
AC201769
Wear indicator Brake discPad Normal
AB
At wear limit
<16-inch disc brake (S6-S35)> <14-inch disc brake (S4-S35)>

CONSTRUCTION DESCRIPTION
BASIC BRAKE SYSTEM35A-10
BRAKE LINEM2350005000266
PROPORTIONING VALVE <Vehicles without ABS>
A proportioning valve is used to prevent early locking
of the rear wheels, in order to provide improved sta
-
bility during braking.
AC609305
From master cylinder rear brake system
To rear brakeO-ring U-packing Sleeve
Guide Seal
Proportioning valveMaster cylinder
SpringPlateValve
AB

35B-1
GROUP 35B
FOUR-WHEEL
ANTI-LOCK BRAKE
SYSTEM (4ABS)
CONTENTS
GENERAL INFORMATION . . . . . . . .35B-2
CONSTRUCTION DESCRIPTION . . .35B-6
SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . 35B-6
ACTUATORS . . . . . . . . . . . . . . . . . . . . . . . 35B-6
ABS-ECU. . . . . . . . . . . . . . . . . . . . . . . . . . . 35B-7

GENERAL INFORMATION
FOUR-WHEEL ANTI-LOCK BRAKE SYSTEM (4ABS)35B-2
GENERAL INFORMATIONM2351000100830
The ABS that ensures directional stability and con-
trollability during hard braking. ABS is standard
equippment on the ES and GTS models but is
optional.
This ABS uses a 4-sensor system that controls all
four wheels independently of each other, and has the
following features:
•EBD *1 (Electronic Brake-force Distribution sys-
tem) control that can obtain ideal rear wheel
brake force has been employed.
•The magnetic encoder for detecting the wheel
speed has been installed instead of the rotor as
the wheel speed sensor.
•For wiring harness saving and secure data com-
munication, CAN *2 bus has been adopted as a
tool of communication with other ECUs.
NOTE: .
•*1: EBD (Electronic Brake-force Distribution)
•*2: For more information about CAN (Controller
Area Network), refer to GROUP 54C
P.54C-2.
.
SPECIFICATIONS
.
CONSTRUCTION DIAGRAM
.
ItemSpecifications
ABS control type4 sensors
Wheel speed sensorMagnetic encoderFront86 (N pole: 43, S pole: 43)
Rear86 (N pole: 43, S pole: 43)
Ty p eSemiconductor
AC608518
CHECK
SERVICE
REQUIRED
AB
56
6
5
11
22 3
7 4, 8
12
<Vehicles with rear drum brake>
<Vehicles with rear disc brake>

GENERAL INFORMATION
FOUR-WHEEL ANTI-LOCK BRAKE SYSTEM (4ABS)35B-3
MAIN COMPONENTS AND FUNCTIONS
.
Parts nameNo.Functional description
SensorWheel speed sensor1Outputs the frequency signal in proportion to the
rotation speed of each wheel to ABS-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 light switch3Outputs the signal indicating whether the brake pedal
is depressed or not through ETACS-ECU to ABS-ECU
via the CAN line.
ActuatorHydraulic unit4Drives the solenoid valve using the signal from
ABS-ECU, and controls the brake fluid pressure for
each wheel.
ABS warning light5Informs the driver of the system status by illuminating,
flashing, or turning off the warning light according to
the signal from ABS-ECU.
Brake warning light6Used as the warning light for the parking brake, brake
fluid level, and EBD control. Informs the driver of the
system status by illuminating or turning off the warning
light according to the signal from ABS-ECU, ETACS or
combination meter.
Data link connector7Establishes the communication with scan tool.
ABS control unit (ABS-ECU)8Controls the actuators (described above) based on the
signals coming from each sensors.
Controls the self-diagnostic functions and fail-safe
functions.
Controls diagnostic function (Compatible with scan
tool).

GENERAL INFORMATION
FOUR-WHEEL ANTI-LOCK BRAKE SYSTEM (4ABS)35B-4
SYSTEM CONFIGURATION
NOTE: Dashed lines indicate the CAN bus communi-
cation lines.
.
AC608528AB
Wheel speed sensor (FL)
ECU power supplyABS-ECU
Combination meter
(Brake warning lamp,
ABS warning lamp)
Data link connector Wheel speed sensor (RL)
Wheel speed sensor (RR)
Wheel speed sensor (FR)
Stop light switch Front-right wheel (FR)
Hydraulic unit Stop light switch
ETACS-ECU
Wheel
speed
sensor
(FL) Wheel
speed
sensor
(FR)Wheel
speed
sensor
(RR)
Wheel
speed
sensor
(RL) Control solenoid valve (RL) OUT Control solenoid valve (RR) OUT Control solenoid valve (FL) OUT Control solenoid valve (FR) OUT Control solenoid valve (FR) IN
Control solenoid valve (FL) IN
Control solenoid valve (RR) IN
Control solenoid valve (RL) IN
Rear right wheel (RR)
Rear left wheel (RL) Front left wheel (FL)

GENERAL INFORMATION
FOUR-WHEEL ANTI-LOCK BRAKE SYSTEM (4ABS)35B-5
ABS ELECTRICAL DIAGRAM
AC609237
Ignition
switch (IG1) Fusible
link No.34Fusible
link No.36 Fusible
link No.27Fusible
link No.26
Analog
interface
circuitAnalog
interface
circuit CAN drive circuit
Interface circuit
Solenoid valve Stoplight
switch
Motor Hydraulic unitStoplightEngine
control
module Data link
connector
Solenoid valve
power supplySolenoid valve
power supply
Motor power supplyMotor power supplyPower supplyCAN drive
circuit
Interface
circuit
CAN transceiver
circuit
CPU
LED drive
circuitInterface
circuit
Interface circuit
Wheel speed sensor (FL) (FR) (RL) (RR)Relay box
(Engine
compartment)
Combination
meter
AB
ABS-ECUCAN drive
circuit
Interface
circuit ETACS-ECU