Mitsubishi MOTORS Lancer Evolution VIII 2003 Technical document

GROUP INDEX
00
General . . . . . . . . . . . . . . . . . . . . . . .
11
Engine . . . . . . . . . . . . . . . . . . . . . . . .
12
Lubrication . . . . . . . . . . . . . . . . . . . .
13
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . .
14
Engine Cooling . . . . . . . . . . . . . . . . .
15
Intake and Exhaust . . . . . . . . . . . . . .
16
Engine Electrical. . . . . . . . . . . . . . . .
17
Engine and Emission Control . . . . .
21
Clutch. . . . . . . . . . . . . . . . . . . . . . . . .
22
Manual Transaxle . . . . . . . . . . . . . . .
25
Propeller Shaft . . . . . . . . . . . . . . . . .
26
Front Axle . . . . . . . . . . . . . . . . . . . . .
27
Rear Axle . . . . . . . . . . . . . . . . . . . . . .
31
Wheel and Tire . . . . . . . . . . . . . . . . .
32
Power Plant Mount . . . . . . . . . . . . . .
33
Front Suspension . . . . . . . . . . . . . . .
34
Rear Suspension . . . . . . . . . . . . . . .
35
Service Brakes . . . . . . . . . . . . . . . . .
36
Parking Brakes . . . . . . . . . . . . . . . . .
37
Steering . . . . . . . . . . . . . . . . . . . . . . .
42
Body. . . . . . . . . . . . . . . . . . . . . . . . . .
51
Exterior . . . . . . . . . . . . . . . . . . . . . . .
52
General . . . . . . . . . . . . . . . . . . . . . . .
54
Chassis Electrical . . . . . . . . . . . . . . .
55
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2003
MITSUBISHI
LANCER
EVOLUTION VIII
TECHNICAL
INFORMATION
MANUAL
FOREWORD
This manual has been prepared as an introduction to
the specifications, features, construction, functions,
and other areas of the new 2003 LANCER EVOLU-
TION VIII. It includes Technical Information and Body
Repair Service. The Body Repair sections immediate-
ly follow Group 55 - Heater, Air Conditioning and Ven-
tilation.
Please read this manual carefully so that it will be of
assistance for your service and sales activities. Please
note the following service manuals are also available
and should be used in conjunction with this manual.
SERVICE MANUAL MSSP-206B-2003
PARTS CATALOG BUM6K103A
No part of this publication may be reproduced, stored in any retrieval
system of transmitted, in any form or by any means, including but not
limited to electronic, mechanical photocopying, recording or otherwise,
without the prior written permission of Mitsubishi Motors Corporation.
!2003 Mitsubishi Motors Corporation
All Rights, Reserved
Printed in USA
MSSP-260B-2003
Interior and Supplemental
Restraint System (SRS) . . . . . . . . . .
Heater, Air Conditioning
and Ventilation . . . . . . . . . . . . . . . . .

52B-1
GROUP 52B
SUPPLEMENTAL
RESTRAINT
SYSTEM (SRS)
CONTENTS
GENERAL DESCRIPTION. . . . . . . . . 52B-2
SYSTEM OPERATION. . . . . . . . . . . . 52B-7
SRS-ECU . . . . . . . . . . . . . . . . . . . . . . 52B-10

GENERAL DESCRIPTION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-2
GENERAL DESCRIPTION
M2521000100132
CAUTION
•Driver and front passenger air bags and seat belt pre-tensioners deploy and operate in all head-on
collisions that exceed the threshold to activate the SRS system.
•The specific value is the equivalent impact when a vehicle collides against a concrete (fixed) wall
at approximately 25 km/h (16 mph) or more.
•The SRS and pre-tensioner may not work under the following conditions:
•A head-on collision is less than the specific value.
•A vehicle collides on its rear end.
•A vehicle rolls over or is in a similar position.
Driverís and front passengerís air bags and seat
belts with pre-tensioner are standard, increasing the
passive safety level.
.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
The SRS is designed to supplement the front seat
belts. It eliminates or reduces or injury to the front
passenger(s) by deploying air bag(s) in case of a
head-on collision.
.
SEAT BELT WITH PRE-TENSIONER
The seat belts with pre-tensioner work simulta-
neously with the SRS. The pre-tensioner takes up
seat belt slack immediately when a collision takes
place by that restraining the front passengers sooner
than the SRS. This prevents the passengers from
moving forwards.
AC211587AB
PASSENGER'S
(FRONT) AIR BAG
DRIVER'S AIR BAG
SEAT BELT PRE-TENSIONER

GENERAL DESCRIPTION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 52B-3
CONSTRUCTION DIAGRAM
The SRS and seat belt tightening systems consist of
driverís/passenger air bag modules, SRS-ECU, two
front impact sensors, SRS warning light, clock
spring, and seat belt pre-tensioner. Air bags are
located in the center of the steering wheel and above
the glove box. Each air bag has a safing folded air
bag and an inflators the system and has a safing G
sensor and an analogue G sensor. On all air bag
modules, the inflator does not contain sodium azide.
The front impact sensor is assembled on the head-
light support panel to monitor collision upon frontal
impact. The warning light on the instrument panel
indicates the operational status of the SRS. A clock
spring is installed in the steering column.
The SRS-ECU detects the impact produced at the
time of a collision from the safing and analog G sen-
sors and supplies squib ignition current to the air bag
modules.
The SRS-ECU has the following functions:
This triggers the air bag modules.
•Power supply backup function (backup con-
denser) that deploys or operates the air bag mod-
ule and seat belt pretensioner within specific
period, in case of power failure upon impact.
•Voltage raising function (DC-DC converter cir-
cuit).
•Diagnostic test mode to improve safety and reli-
ability.
AC211592
VEHICLES
IDENTIFICATION
CODE CHART
PLATE
SRS WARNING LIGHT
DRIVER'S AIR
BAG MODULE
CLOCK SPRING
DATA LINK
CONNECTOR
(FOR SCAN
TOOL) SRS-ECU
PASSENGER'S (FRONT)
AIR BAG MODULE
AB
SEAT BELT WITH
PRE-TENSIONER
RADIATOR
FRONT IMPACT SENSOR

GENERAL DESCRIPTION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-4
SRS SYSTEM CIRCUIT DIAGRAM
AC211582
MICRO
PROCESSOR
FRONT AIR
BAG
ANALOG
G-SENSOR
CONNECTOR
LOCK
DETECTION
CIRCUIT
CONNECTOR
LOCK
DETECTION
CIRCUIT
SCAN TOOL
INTERFACE
CIRCUIT
BACK UP
CAPACITOR
DC-DC
CONVERTER
POWER
SOURCE
CIRCUIT FOR
SIDE-AIRBAG
FRONT AIR BAG
SAFING
G-SENSOR
WARNING
LIGHT
DRIVE
CIRCUIT
AIR BAG
DRIVE
CIRCUIT
AIR BAG
DRIVE
CIRCUIT
AIR BAG
DRIVE
CIRCUIT
AIR BAG
DRIVE
CIRCUIT
AIR BAG
DRIVE
CIRCUIT
AIR BAG
DRIVE
CIRCUIT
AIR BAG
DRIVE
CIRCUIT
AIR BAG
DRIVE
CIRCUIT
FRONT
IMPACT
SENSOR
INTERFACE
CIRCUIT
DATA LINK
CONNECTOR
(FOR SCAN
TOOL)
ON
ON
OFF
OFF
CONNECTOR
LOCK SWITCH*
IGNITION SWITCH (IG1)
No.2
7.5A
No.3
7.5A
COMBINATION
METER (SRS
WARNING LIGHT)
ON
ON
OFF
OFF
CONNECTOR LOCK
SWITCH*
DRIVER'S
AIR BAG
MODULE
CLOCK SPRING
ON
OFF
OFF
OFF
ON ON
PASSENGER'S
(FRONT) AIR BAG
MODULE OFF
ON
OFF
ON
CONNECTOR
LOCK SWITCH*
OFF
ON
OFF
ON
CONNECTOR
LOCK SWITCH*
SEAT BELT
PRE-TENSIONER
(LH)
SEAT BELT
PRE-TENSIONER
(RH) OFF
ON
OFF CONNECTOR
LOCK SWITCH*
(LH) (RH)
FRONT IMPACT
SENSOR
CONNCTOR LOCK
SWITCH*
AB
ON
OFF
NOTE
*: CONNECTOR LOCKED: ON
CONNECTOR UNLOCKED: OFF

GENERAL DESCRIPTION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 52B-5
CAUTION LABELS
Labels to indicate cautions regarding the handling
and the services of SRS air bag air attached on the
position shown in the following illustration.
AC211604AB
COVER CLOCK SPRING
B
PASSENGER'S (FRONT)
AIR BAG MODULE
C
SRS-ECU
D
SUN VISOR
E
E
STEERING JOINT COVER
H
I
GLOVE BOX
F
G
A
SEAT BELT WITH
PRE-TENSIONER
(DRIVER'S AND FRONT
PASSENGER'S SEATBELT)
FRONT IMPACT SENSOR
J

GENERAL DESCRIPTION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-6
LABEL CONTENTS
A WARNING: SRS
BEFORE REPLACING STEERING WHEEL, READ SERVICE MANUAL. THIS AIR BAG
MODULE CANNOT BE REPAIRED.
DO NOT DISASSEMBLE OR TAMPER.
B CAUTION: SRS CLOCK SPRING
THIS IS NOT A REPAIRABLE PART. IF DEFECTIVE, REPLACE ENTIRE UNIT
ACCORDING TO THE SERVICE MANUAL INSTRUCTIONS. TO RE-CENTER: ROTATE
CLOCKWISE UNTIL TIGHT. THEN ROTATE IN OPPOSITE DIRECTION ROUGHLY 3
TURNS AND ALIGN ARROWS >><<.
C WARNING FLAMMABLE/EXPLOSIVE SRS AIR BAG MODULE
TO AVOID SERIOUS INJURY:
•DO NOT REPAIR, DISASSEMBLE OR TAMPER.
•AVOID CONTACT WITH FLAME OR ELECTRICITY.
•DO NOT DIAGNOSIS/USE NO TEST EQUIPMENT OR PROBES.
•STORE BELOW 200°F (93°C).
•BEFORE DOING ANY WORK INVOLVING MODULE, READ SERVICE MANUAL
FOR IMPORTANT FURTHER DATA.
DCAUTION:
DO NOT DISASSEMBLE OR DROP. IF DEFECT REFER TO SERVICE MANUAL.
E WARNING
DEATH or SERIOUS INJURY can occur
•Children 12 and under can be killed by the air bag.
•The BACK SEAT is the SAFEST place for children.
•NEVER put a rear-facing child seat in the front.
•Sit as far back as possible from the air bag.
•ALWAYS use SEAT BELTS and CHILD RESTRAINTS.
F AIR BAG SYSTEM INFORMATION
THIS VEHICLE HAS AN AIR BAG SYSTEM WHICH WILL SUPPLEMENT THE SEAT
BELT IN CERTAIN FRONTAL COLLISIONS. THE AIR BAG IS NOT A SUBSTITUTE FOR
THE SEAT BELT IN ANY TYPE OF COLLISION. THE DRIVER AND ALL OTHER
OCCUPANTS SHOULD WEAR SEAT BELTS AT ALL TIME.
WARNING!
IF THE "SRS" WARNING LIGHT DOES NOT ILLUMINATE FOR SEVERAL SECONDS
WHEN IGNITION KEY IS TURNED TO "ON" OR THE ENGINE IS STARTED, OR IF THE
WARNING LIGHT STAYS ON WHILE DRIVING, TAKE THE VEHICLE TO YOUR
NEAREST AUTHORIZED DEALER IMMEDIATELY. ALSO, IF VEHICLE'S FRONT END
IS DAMAGED OR IF THE AIR BAG HAS DEPLOYED, TAKE THE VEHICLE FOR
SERVICE IMMEDIATELY.
THE AIR BAG SYSTEM MUST BE INSPECTED BY AN AUTHORIZED DEALER TEN
YEARS AFTER THE VEHICLE MANUFACTURE DATE SHOWN ON THE
CERTIFICATION LABEL LOCATED ON THE LEFT FRONT DOOR-LATCH POST OR
DOOR FRAME.
READ THE "SRS" SECTION OF YOUR OWNER'S MANUAL BEFORE DRIVING FOR
IMPORTANT INFORMATION ABOUT OPERATION AND SERVICE OF THE AIR BAG
SYSTEM.
WHEN YOU ARE GOING TO DISCARD YOUR GAS GENERATOR OR VEHICLE,
PLEASE SEE YOUR DEALER.

SYSTEM OPERATION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 52B-7
SYSTEM OPERATION
M2521001000116
A passengerís (front) air bag module and clock
spring are the same as OUTLANDER.
DRIVERíS AIR BAG MODULE
CAUTION
Never disassemble the air bag module.
The driverís air bag module is incorporated into the
3-spoke steering wheel. The driverís air bag module
is an assembly part consisting of air bag, module
cover, inflator, and its their fasteners. It is installed
into the steering wheel. The air bag is made from
nylon and inflates by the gas generating from the
inflator. As a driver is being pressed to the air bag, it
deflates discharging gas from two vents at the rear of
the air bag to reduce the shock from the impact. An
inflator that does not contain sodium azide is used.
G WARNING
CHILDREN CAN BE KILLED OR INJURED BY PASSENGER AIR BAG. THE BACK
SEAT IS THE SAFEST PLACE FOR CHILDREN 12 AND UNDER. MAKE SURE ALL
CHILDREN USE SEAT BELTS OR CHILD SEAT. NOT TO BE REMOVED EXCEPT BY
OWNER.
H CAUTION: SRS
FIX STRG. WHEEL AT TIRES STRAIGHT AHEAD BEFORE GEARBOX REMOVAL.
OTHERWISE, MAY DAMAGE SRS CLOCK SPRING MAKING SRS SYSTEM IN
OPERATIVE. RISKING SERIOUS DRIVER INJURY.
I DANGER SEAT BELT PRETENSIONER
CAUTION THIS ASSEMBLY CONTAINS AN EXPLOSIVE INITIATOR
FLAMMABLE MATERIAL
TO PREVENT PERSONAL INJURY
•DO NOT IMPACT, DISMANTLE OR INSTALL IT INTO ANOTHER VEHICLE.
•SERVICE OR DISPOSE OF IT AS DIRECTED IN THE REPAIR MANUAL.
JCAUTION:
DO NOT DISASSEMBLE OR DROP.
LABEL CONTENTS
AC211615AB
A
A
AIR BAG MODULE
SECTION A - A
INFLATOR
AIR BAG
MODULE COVER

SYSTEM OPERATION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-8
FRONT IMPACT SENSOR
CAUTION
Never disassemble the front impact sensor.
The front impact sensor is installed in the radiator support
panel. In a collision, the contact in the front impact sensor turns
ON and an output signal is send to the SRS-ECU. A resistor is
connected to the front impact sensor in parallel with the contact
for fault diagnosis.
SEAT BELT WITH PRE-TENSIONER
CAUTION
Never disassemble the seat belt with pre-ten-
sioner.
The seatbelt incorporating the pretensioner automat-
ically winds the seatbelt upon front impact to reduce
forward shifting of the passenger.
The seat belt pre-tensioner is built into the driver's
and passenger's front seat belt retractor.
Upon front impact the pretensioner ignites the gas
generator and emits gas with the SRS-ECU signal
when the front impact sensor, attached to the front of
the body, detects an impact that exceeds the permis-
sible limit. The gas pressure shifts the ball in the pipe
and the balls comes in contact with the protrusion of
the ring gear, The ball is inserted in the ring gear and
then interlocked with the pinion. The ring gear rota-
tion forces the pinion to turn the spool toward the belt
wind direction to wind the webbing.
AC206958AC
SENSOR INTERNAL CIRCUIT
AC101663AE
GAS GENERANT
SPOOL
PINION
RING GEAR
PIPE
BALL

SYSTEM OPERATION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 52B-9
SRS AIR BAG SPECIAL CONNECTOR
To enhance the Systemís reliability, a connector lock
switch is integrated into the SRS-ECU connector, the
air bag module connectors, the clock spring connec-
tor, the seat belt pretensioner connectors (black con-
nector "A" shown in the illustration above).
SQUIB CIRCUIT CONNECTOR LOCK SWITCH
AC103223
SRS-ECU
SEAT BELT WITH
PRE-TENSIONER
(DRIVER'S SIDE)
CLOCK
SPRING
DRIVER'S AIR BAG MODULE
PASSENGER'S (FRONT)
AIR BAG MODULE
SEAT BELT WITH
PRE-TENSIONER
(FRONT PASSENGER'S
SIDE)
A
A
A
A
AF
AC006197
OFF
ON
OFF
ON
SQUIB SRS-ECU SQUIB
SRS-ECU
OFF
OFF
ON
ON
A
A
CONNECTOR DISCONNECTED
<CONNECTOR SHORTING MECHANISM (E.G. SRS-ECU CONNECTOR)>
ECU-SIDE CONNECTOR WIRING HARNESS-SIDE CONNECTOR
TERMINAL
(MALE)
PARTITION
PANEL
PARTITION
PANEL
B
BSHORT SPRING
SHORT SPRING
AH
SECTION B - B
SHORT
SPRING
SECTION A - A
CONNECTOR CONNECTED
TERMINAL
(MALE)
TERMINAL
(MALE)
PARTITION
PANEL
TERMINAL
(FEMALE)
TERMINAL
(FEMALE)
TERMINAL
(FEMALE)
CONNECTOR CONNECTED

SRS-ECU
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-10
CAUTION
When the connector is disconnected, there will
be short circuit between the terminals. This is not
a fault.
The switch is a mechanism that shorts the power
supply terminal to the ground terminal automatically
in the air bag squib circuit when the connector is dis-
connected. A "short" spring is integrated inside the
connector. This spring prevents static electricity from
flowing to the squib by shorting the power supply ter-
minal to the ground terminal (i.e. there is no potential
difference between the two terminals).
WARNING LIGHT CIRCUIT CONNECTOR LOCK
SWITCH
The switch is a mechanism that shorts the power supply termi-
nal to the ground terminal automatically in the warning light cir-
cuit, when the connector is disconnected. Its structure is similar
to the squib circuit connector shorting mechanism.
SRS-ECU
M2521007000095
CAUTION
Never disassemble the SRS-ECU.
The SRS-ECU incorporates an analog G-sensor and
safing G-sensor for frontal collisions and a safing G-
sensor for side collisions. In frontal collisions, the
driverís and passengerís (front) air bags deploy and
the seat belt pre-tensioners are activated only when
both the analog and safing G-sensors detect simulta-
neously a collision-induced G of a level exceeding
the threshold as in the case with the conventional
system. In the case of side collisions, the side-airbag
on the side subjected to an impact deploys if the side
impact sensor and the SRS-ECUís safing G-sensor
detect simultaneously a lateral G of forces above the
predetermined level.
The SRS-ECU is provided with the following capabil-
ities:
•Backup power supply in case of power failure in
collisions
•Boosting function in case of battery voltage drop
•Self-diagnosis function to avoid systemís opera-
tion errors and improve its reliability
DIAGNOSTIC FUNCTION
The SRS-ECU has the following functions to make
system checking using the scan tool easy.
•Diagnostic trouble code output
•Service data output
AC006203
IGNITION
SWITCH (IG1)
SRS WARNING
LIGHT
SHORT
SPRING
AB
SRS-ECU HARNESS-SIDE
CONNECTOR
OFF
ON
NOTE
*: CONNECTOR LOCKED: ON
CONNECTOR UNLOCKED: OFF
CONNECTOR
LOCK SWITCH*
OFF
ON

SRS-ECU
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 52B-11
DIAGNOSTIC TROUBLE CODE OUTPUT
The SRS-ECU diagnoses the following items and
stores a diagnostic trouble code in the non-volatile
memory (EEPROM*1) when a problem is detected.
Therefore, the memory is not deleted after a battery
terminal is disconnected, (The diagnostic trouble
code memory can be deleted by the scan tool.)
CODE NO. MAJOR CONTENTS OF DIAGNOSTICS
1A Front impact sensor (LH) short-circuited
1B Front impact sensor (LH) open-circuited
1C Front impact sensor (LH) short-circuited to power supply
1D Front impact sensor (LH) short-circuited to ground
2A Front impact sensor (RH) short-circuited
2B Front impact sensor (RH) open-circuited
2C Front impact sensor (RH) short-circuited to power supply
2D Front impact sensor (RH) short-circuited to ground
14 Analog G-sensor malfunction
15 Safing G-sensor short-circuited (for frontal collision)
16 Safing G-sensor open-circuited (for frontal collision)
21*3Driver's air bag squib short-circuited
22*3Driver's air bag squib open-circuited
24*3Passenger's (front) air bag squib short-circuited
25*3Passenger's (front) air bag squib open-circuited
26*3Driver's pre-tensioner squib short-circuited
27*3Driver's pre-tensioner squib open-circuited
28*3Passenger's (front) pre-tensioner squib short-circuited
29*3Passenger's (front) pre-tensioner squib open-circuited
31 SRS-ECU capacitor circuit voltage too high
32 SRS-ECU capacitor circuit voltage too low
34*2SRS-ECU connector lock out of order
35 Ignition of the air bag completed
39 Air bag deployed simultaneously
41*2Power supply voltage (IG1 (A) voltage) drops a0bnormally.
42*2Power supply voltage (IG1 (B) voltage) drops abnormally.
43*2SRS warning light circuit open-circuited
44*2SRS warning light circuit malfunction
45 SRS-ECU non-volatile memory (EEPROM) and A/D converter system
46*2Incorrect SRS-ECU
51 Driver's air bag squib activating circuit short-circuited
52 Driver's air bag squib activating circuit open-circuited

SRS-ECU
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-12
NOTE: *1: Electrically Erasable Programmable ROM
*2: This diagnostic trouble code memory will be automatically cleared from the memory and the SRS warning
light will be switched off when the system returns to normal condition.
*3: The diagnostic trouble codes will remain in memory and the SRS warning light will be switched off if the
system returns to normal condition.
DATA LIST OUTPUT
When the SRS-ECU detects a problem, it stores a
diagnostic trouble code and the duration that the
problem has lasted in the non-voltage memory. In
addition, how often a diagnostic trouble code and
duration are cleared by the scan tool are stored in
the non-volatile memory as a reference for service
work. This data can be read by the scan tool.
54 Passenger's (front) air bag squib activating circuit short-circuited
55 Passenger's (front) air bag squib activating circuit open-circuited
56 Driverís seat belt pre-tensioner (squib ignition drive circuit) system detected short
57 Driverís seat belt pre-tensioner (squib ignition drive circuit) system detected open
58 Passengerís seat belt pre-tensioner (squib ignition drive circuit) system detected
short
59 Passengerís seat belt pre-tensioner (squib ignition drive circuit) system detected
open
61 Driver's air bag squib drive circuit (power supply side) short-circuited
62 Driver's air bag squib drive circuit (ground side) short-circuited
64 Passenger's (front) air bag squib drive circuit (power supply side) short-circuited
65 Passenger's (front) air bag squib drive circuit (ground side) short-circuited
66 Driver's pre-tensioner squib (power supply side) short-circuited
67 Driver's pre-tensioner squib (ground side) short-circuited
68 Passenger's (front) pre-tensioner squib drive circuit (power supply side) short-
circuited
69 Passenger's (front) pre-tensioner squib drive circuit (ground side) short-circuited
CODE NO. MAJOR CONTENTS OF DIAGNOSTICS
No. DATA LIST ITEM APPLICABILITY
92 Number indicating how often the memory is cleared Maximum time to be stored: 250
days
93 How long a problem has lasted (How long from the
occurrence of the problem until the first air bag squib
ignition signal)
Maximum time to be stored: 9999
minutes (approximately seven
days)
94 How long a problem has lasted (How long from the first
air bag squib igniting signal until now)

36-1
GROUP 36
PARKING BRAKE
CONTENTS
GENERAL INFORMATION . . . . . . . . 36-2

GENERAL INFORMATION
PARKING BRAKE
36-2
GENERAL INFORMATION
M2360000100173
FEATURE
The parking brakes are a mechanical rear wheel
brake design and controlled by a lever.
CONSTRUCTION DIAGRAM
AC211553AB

35B-1
GROUP 35B
FOUR-WHEEL
ANTI-LOCK BRAKE
SYSTEM (4ABS)
CONTENTS
GENERAL DESCRIPTION. . . . . . . . . 35B-2
SENSORS . . . . . . . . . . . . . . . . . . . . . 35B-6
ACTUATORS . . . . . . . . . . . . . . . . . . . 35B-8
BRAKE MODULATOR (ABS-ECU) . . 35B-9
SYSTEM OPERATION . . . . . . . . . . . . 35B-10

GENERAL DESCRIPTION
FOUR-WHEEL ANTI-LOCK BRAKE SYSTEM (4ABS)
35B-2
GENERAL DESCRIPTION
M2351000100186
Top comp o nents such as Brem b o! brakes, EBD and
sports ABS improve braking power and braking sta-
bility.
SPORTS ABS
•4-wheel independent control optimizes the brake
force to each wheel to achieve a balance of
improved braking force and braking stability.
•A steering angular velocity sensor was added to
monitor the steering angle status. Braking force is
altered in response to the steering status to
improve the quality of steering when braking in
corners.
•The steering angular velocity sensor, lateral G-
sensor and longitudinal G-sensor accurately
monitor driving conditions and optimize ABS con-
trol to match the specific driving conditions.
EBD (Electronic Brake-force Distribution
system)
•Rear brake power is electronically controlled to
optimize performance in accordance with road
and load conditions and to ensure optimal distri-
bution of braking force between the front and rear
brakes.
•Rear brake fluid pressure control employs a
brake modulator hydraulic unit solenoid valve that
made it possible to eliminate the pressure control
valves (proportioning valves).
•Effective use of rear wheel brake force reduces
temperature build-up in the front brakes under
hard braking conditions.
•Independent control of the left and right rear
brakes when braking during cornering achieves a
balance of improved vehicle stability and braking
force.
SPECIFICATIONS
ITEM LANCER EVOLUTION LANCER
ABS control method 4-sensor, 4-channel 4-sensor, 4-channel
No. of ABS rotor teeth Front 43 43
Rear 43 43
ABS sensor Type Magnet coil type Magnet coil type
Gap between sensor
and rotor mm (in)
Front 0.85 (0.033)
<Non-adjustable type>
0.85 (0.033)
<Non-adjustable type>
Rear 0.60 (0.023)
<Non-adjustable type>
0.89 (0.035)
<Non-adjustable type>

GENERAL DESCRIPTION
FOUR-WHEEL ANTI-LOCK BRAKE SYSTEM (4ABS) 35B-3
CONSTRUCTION DIAGRAM
10067AU
AC211546
AC209828
AB
1
1
3
5
2
4
6
9
7, 10
8
NAME OF PART NO. OUTLINE OF FUNCTION
Sensor ABS sensor 1 Sends alternating current signals at frequencies which are proportional
to the rotation speeds of each wheel to the ABS-ECU.
Lateral G-sensor 2 Sends data on vehicleís rate of lateral acceleration to the ABS-ECU.
Longitudinal G-
sensor
3 Sends data on vehicleís rate of longitudinal acceleration to the ABS-
ECU.
Steering angular
velocity sensor
4 Sends data on steering wheel angle to the ABS-ECU.
Indicates the ABS-ECU when steering wheel is in straight-ahead
position.
Stoplight switch 5 Sends a signal to the ABS-ECU to indicate whether the brake pedal is
depressed or not.
Parking brake
switch
6 Sends a signal to the ABS-ECU to indicate whether the parking brake
lever is pulled or not.
Actuator Hydraulic unit 7 Drives the solenoid valves according to signals from the ABS-ECU in
order to control the brake hydraulic pressure for each wheel.
ABS warning
light
8 Illuminates in response to signals from the ABS-ECU when a problem
develops in the system.
Data link connector 9 Outputs the diagnostic trouble codes and allows communication with
the scan tool.
Brake modulator (ABS-ECU) 10 Controls actuators (described above) based on the signals coming from
each sensor.
Controls the self-diagnosis and fail-safe functions.
Controls the diagnostic function (scan tool compatible).

GENERAL DESCRIPTION
FOUR-WHEEL ANTI-LOCK BRAKE SYSTEM (4ABS)
35B-4
SYSTEM CONFIGURATION DIAGRAM
10066AU
AC211547AB
ABS SENSOR (FL) FR SOLENOID VALVE (OUT)
FR SOLENOID VALVE (IN)
FL SOLENOID VALVE (OUT)
FL SOLENOID VALVE (IN)
RR SOLENOID VALVE (OUT)
RR SOLENOID VALVE (IN)
RL SOLENOID VALVE (OUT)
RL SOLENOID VALVE (IN)
STOPLIGHT SWITCH
ECU POWER SUPPLY
ABS-ECU
ABS WARNING LIGHT
DATA LINK CONNECTOR
ABS SENSOR (RL)
ABS SENSOR (RR)
ABS SENSOR (FR)
STOPLIGHT
SWITCH
REAR-RIGHT
WHEEL (RR)
ABS SENSOR
FRONT-RIGHT
WHEEL (FR)
ABS
SENSOR
FRONT-LEFT
WHEEL (FL)
REAR-LEFT
WHEEL (RL)
ABS SENSOR
LATERAL G-SENSOR
LONGITUDINAL G-SENSOR
ABS SENSOR
PARKING
BRAKE
SWITCH
STEERING ANGULAR
VELOCITY SENSOR
LATERAL G-SENSOR
LONGITUDINAL G-SENSOR
PARKING BRAKE SWITCH
STEERING ANGULAR VELOCITY SENSOR
HYDRAULIC
UNIT

GENERAL DESCRIPTION
FOUR-WHEEL ANTI-LOCK BRAKE SYSTEM (4ABS) 35B-5
ABS ELECTRICAL CIRCUIT DIAGRAM
AC211548AB
15
15A
FL FR RL RR
ABS-ECU
10
15A
12
7.5A 7.5A
2
7.5A
5
15A
15
ANTI
LOCK
FUSIBLE
LINK 3 BATTERY
IGNITION
SWITCH (IG2) IGNITION
SWITCH (IG1)
JUNCTION BLOCK
RELAY
BOX
STOPLIGHT
SWITCH
SOLENOID
VALVE POWER
SUPPLY
MOTOR
POWER
SUPPLY
STOPLIGHT
SWITCH
MONITOR
ECU
POWER
SUPPLY
ABS SENSOR
DATA LINK
CONNECTOR
COMMUNICATION
LINE
CONTROL
LINE
MOTOR
SOLENOID VALVE
HYDRAULIC UNIT
COMBINATION
METER
STOPLIGHT
FUSIBLE
LINK 1
LATERAL
G-SENSOR
LONGITUDINAL
G-SENSOR
STEERING
ANGULAR
VELOCITY
SENSOR
LATERAL
G-SENSOR
INPUT
STEERING ANGULAR
VELOCITY SENSOR
INPUT
LATERAL
G-SENSOR
INPUT
PARKING BRAKE
SWITCH MONITOR
PARKING
BRAKE
SWITCH
(FL) (FR) (RL) (RR)