2007 MITSUBISHI LANCER EVOLUTION sensor

35A-2
BASIC BRAKE
SYSTEM
CONTENTS
GENERAL INFORMATION 3..................
SERVICE SPECIFICATIONS 5.................
LUBRICANTS 6..............................
SEALANT 6..................................
SPECIAL TOOLS 6...........................
ON-VEHICLE SERVICE 7.....................
Brake Pedal Check and Adjustment 7............
Brake Booster Operating Test 8.................
Check Valve Operation Check 9.................
Proportioning Valve Function Test
9......................Bleeding 10....................................
Brake Fluid Level Sensor Check 11.............
Disc Brake Pad Check and Replacement 11......
Disc Brake Rotor Check 13.....................
Brake Disc Thickness Check 14.................
Brake Disc Run-out Check and Correction 14....
BRAKE PEDAL 16...........................
PROPORTIONING VALVE, MASTER
CYLINDER AND BRAKE BOOSTER 17........
Master Cylinder 19.............................
DISC BRAKE 20.............................

BASIC BRAKE SYSTEM -On-vehicle Service35A-11
BRAKE FLUID LEVEL SENSOR CHECK
The brake fluid level sensor is in good condition if there is
no continuity when the float surface is above “MIN” and if
there is continuity when the float surface is below “MIN”.
DISC BRAKE PAD CHECK AND REPLACEMENT

NOTE
The wear indicator contacts the brake disc when the brake
pad thickness reaches approximately 2 mm and emit a
squealing sound to warn the driver.
1. Check the brake pad thickness through the caliper body
check port.
Standard value: 10.0 mm
Limit: 2.0 mm
2. When the thickness is less than the limit, always replace
the pads at an axle set.
3. Remove the pin bolt. Pivot the caliper assembly and hold
it with wires.
Caution
Do not wipe off the special grease that is on the pin
or allow it to contaminate the pin.
4. Remove the following parts from the caliper support.
1. Pad and wear indicator assembly
2. Pad assembly
3. Clip
4. Outer shim
5. In order to measure the brake drag force after pad
installation, measure the rotary-sliding resistance of the
hub with the pads removed. (Refer to P.35A-21.)
6. Install the pads and caliper assembly, and then check
the brake drag force. (Refer to P.35A-21.)
14Z0017
Front Rear
Front Rear
Front Rear
12 34
3
1
2 3
4
3

BASIC BRAKE SYSTEM -ProportioningValve,MasterCylinder
and Brake Booster35A-18
Master cylinder removal steps
1. Clutch hose connection
2. Brake fluid level sensor connector
3. Reservoir cap assembly
4. Brake fluid level sensor
5. Brake pipe connection
6. Proportioning valve

7. O ring
8. Master cylinder
Proportioning valve removal steps

5. Brake pipe connection
6. Proportioning valve
7. O ring
Brake booster removal steps
1. Clutch hose connection
2. Brake fluid level sensor connector5. Brake pipe connection
8. Master cylinder
"BADPush rod protrusion amount check and
adjustment
"AA9. Vacuum hose
(With built-in check valve)
10. Snap pin
11. Pin assembly
12. Clevis
DRemove A/C liquid pipe B
from the
retaining clip.(Refer to GROUP 55A
- Refrigerant Line.)
13. Brake booster
14. Sealer
Fitting removal steps
"AA9. Vacuum hose
(With built-in check valve)
15. Fitting
INSTALLATION SERVICE POINTS
"AAVACUUM HOSE CONNECTION
Insert the vacuum hose to the brake booster with its paint
mark facing upward, and then secure the hose by using the
hose clip.
"BAPUSH ROD PROTRUSION AMOUNT CHECK AND
ADJUSTMENT
1. Measure dimension (A).
Standard value (A) : 8.98 - 9.23 mm
NOTE
When a negative pressure of 66.7 kPa is applied to the
brake booster, the push rod should protrude 10.27 – 10.53
mm.
Block gauge Measuring distance A
A

35B-1
ANTI-SKID
BRAKING SYSTEM
(ABS) <4WD>
CONTENTS
GENERAL INFORMATION 2..................
SERVICE SPECIFICATIONS 3.................
LUBRICANTS Refer to GROUP 35A..........
SEALANT Refer to GROUP 35A..............
SPECIAL TOOLS 4...........................
TROUBLESHOOTING 4.......................
ON-VEHICLE SERVICE 26....................
Brake Pedal Check and Adjustment
Refer to GROUP 35A ..........................
Brake Booster Operating Test
Refer to GROUP 35A ..........................
Check Valve Operation Check
Refer to GROUP 35A ..........................
Bleeding Refer to GROUP 35A..................
Brake Fluid Level Sensor Check
Refer to GROUP 35A ..........................
Disc Brake Pad Check and
Replacement Refer to GROUP 35A..............Disc Brake Rotor Check Refer to GROUP 35A...
Brake Disc Thickness Check
Refer to GROUP 35A ..........................
Brake Disc Run-out Check and Correction
Refer to GROUP 35A ..........................
Wheel Speed Sensor Output Voltage Check
26 ............................................
Hydraulic Unit Check 28........................
Remedy for a Flat Battery 29...................
BRAKE PEDAL Refer to GROUP 35A........
MASTER CYLINDER AND BRAKE
BOOSTER Refer to GROUP 35A............
DISC BRAKE Refer to GROUP 35A..........
HYDRAULIC UNIT AND ABS-ECU 30.........
WHEEL SPEED SENSOR 33..................
G SENSORS AND STEERING WHEEL
SENSOR 35..................................

ABS <4WD> -General Information35B-2
GENERAL INFORMATION
ABS has been adopted as optional equipment in
RS-IIto maintain directional stability and steering
performance during sudden braking or braking on
slippery road surfaces.
The ABS control method is a 4-sensor, 4-channel
method which provides independent control for all
wheels.
Following system for Lancer EVOLUTION-VII has
been modified from Lancer EVOLUTION-VI Tommi
Makinen Edition.DBy adding lateral G sensor, longitudinal G
sensor and steering wheel sensor, optimized
ABS control at the time of cornering.
DBy inputting parking brake switch signal to
ABS-ECU with pulling parking brake lever, ABS
control has been optimized.
DABS-ECU outputs ABS signal to 4WD-ECU.
DG sensor (lateral), steering wheel sensor and
parking brake switch have been added to the
diagnosis and service data.
DABS-ECU connector has been changed.
EBD CONTROL
In ABS, electronic control method is used by which
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 each wheel speed
sensor’s signal. EBD control is a control system
which provides a high level of control for both vehicle
braking force and vehicle stability. The system has
the following features:
DBecause the system provides the optimum rear
wheel braking force regardless of the vehicleladen condition and the condition of the road
surface, the system reduces the required pedal
depression force, particularly when the vehicle
is heavily laden or driving on road surfaces
with high frictional coefficients.
DBecause the duty placed on the front brakes
has been reduced, the increases in pad
temperature can be controlled to improve the
wear resistance characteristics of the pad,
during front brakes applying.
DControl valves such as the proportioning valve
are no longer required.
SPECIFICATIONS
ItemSpecifications
ABS control method4-sensor, 4-channel
No. of ABS rotor teethFront43
Rear43
ABS speed sensorTypeMagnet coil typep
Gap between sensor and rotor mm0.85 / 0.60 (non-adjustable type)

ABS <4WD> -General Information/Service Specifications35B-3
CONSTRUCTION DIAGRAM
Stop lamp
switch*Parking brake
switch
Diagnosis
connector*
Wheel speed sensorWheel speed sensor Hydraulic unit
assembly*
(integrated with
the ABS-ECU) ABS warning lamp
Lateral G sensor
Longitudinal G sensor Steering
wheel
sensor*
NOTE
For R.H. drive vehicles, only the position indicated by the * is symmetrical.
SERVICE SPECIFICATIONS
ItemsStandard value
Wheel speed sensor internal resistance kΩ1.24 - 1.64
Wheel speed sensor insulation resistance kΩ100 or more
Lateral G sensor/Longitudinal G
sensoroutputvoltageV
On stationary vehicle2.4 - 2.6
sensor outputvoltageV
With front mark downward3.4 - 3.6

ABS <4WD> -Special Tools/Troubleshooting35B-4
SPECIAL TOOLS
ToolNumberNameUse
MB991502MUT-IIsub
assemblyFor checking of ABS
(Diagnosis code display when using the
MUT-II)
MB991529Diagnosis code
check harnessFor checking of ABS
(Diagnosis code display when using the ABS
warning lamp)
MB991348Test harness setFor checking of G sensor
TROUBLESHOOTING
STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING
Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points.
NOTES WITH REGARD TO DIAGNOSIS
1. The phenomena listed in the following table are not abnormal.
PhenomenonExplanation of phenomenon
System check soundWhen starting the engine, a thudding sound can sometimes be heard coming from inside
the engine compartment, but this is because the system operation check is being
performed, and is not an abnormality.
ABS operation sound1. Sound of the motor inside the ABS hydraulic unit operation. (whine)
2. Sound is the generated along with vibration of the brake pedal. (scraping)
3. When ABS operates, sound is generated from the vehicle chassis due to repeated
brake application and release.
(Thump: suspension; squeak: tyres)
System check soundWhen depressing the brake pedal during driving, a shock is sometime felt.
2. For road surfaces such as snow-covered roads and gravel roads, the braking distance for vehicles
with ABS can sometimes be longer than that for other vehicles. Accordingly, advise the customer
to drive safely on such roads by lowering the vehicle speed and not being too overconfident.
3. Diagnosis detection condition can vary depending on the diagnosis code.
Make sure that checking requirements listed in the “Comment” are satisfied when checking the trouble
symptom again.

ABS <4WD> -Troubleshooting35B-7
INSPECTION CHART FOR DIAGNOSIS CODES
Diagnosis code No.Inspection itemReference page
11Front right wheel speed sensor (Open circuit or short circuit)35B-9
12Front left wheel speed sensor (Open circuit or short circuit)
13Rear right wheel speed sensor (Open circuit or short circuit)
14Rear left wheel speed sensor (Open circuit or short circuit)
16*ABS-ECU power supply system (Abnormal voltage drop or rise)35B-10
21Front right wheel speed sensor35B-9
22Front left wheel speed sensor
23Rear right wheel speed sensor
24Rear left wheel speed sensor
32Longitudinal G sensor system35B-11
41Front right solenoid valveThe diagnosis codes are output
whenthereisnoresponsetothe
35B-12
42Front left solenoid valve
whenthereis no responsetothe
drive signals for respective solenoid
valvesortheABS ECUpower43Rear right solenoid valvevalves or theABS-ECUpower
supply system is defective.
44Rear left solenoid valve
51Valve relay problem (stays on)35B-30, 31
(Replace the
hydraulic unit and
ABS-ECU.)
52Valve relay problem (stays off) or ABS-ECU power supply system
problem35B-12
53Motor relay problem (stays off) or ABS-ECU power supply system
problem
54Motor relay problem (stays on)35B-30, 31
(Replace the
hydraulic unit and
ABS-ECU.)
55Motor system (seized pump motor) or ABS-ECU power supply system
problem35B-12
63ABS-ECU35B-30, 31
(Replace the
hydraulic unit and
ABS-ECU.)
71Lateral G sensor system35B-13