2007 MITSUBISHI LANCER EVOLUTION Service Repair Manual

INTAKE AND EXHAUST -Turbocharger15-23
DISASSEMBLY SERVICE POINTS
AA"SNAP RING REMOVAL
Lay the unit with the compressor cover side facing down
and using snap ring pliers, remove the compressor cover
attaching snap ring.
Caution
When removing the snap ring, hold it with fingers to
prevent it from springing away.
AB"TURBINE WHEEL ASSEMBLY REMOVAL
Remove the turbine wheel assembly, striking the
circumference of the compressor cover with a plastic hammer.
The turbine wheel assembly may be a little hard to remove
due to an O-ring put on the outer circumference.
CLEANING
1. Use a clean cleaning oil commercially available. Do not
use corrosive cleaning oils as they could damage to some
parts.
2. Use a plastic scraper or hard brush to clean aluminum
parts.
REASSEMBLY SERVICE POINTS
"AAO-RING INSTALLATION
Apply a light coat of engine oil to a new O-ring and fit in
the turbine wheel assembly groove.
Caution
When installing the O-ring, use care not to damage it. A
damaged O-ring causes oil leaks.
"BATURBINE WHEEL ASSEMBLY
1. Apply a light coat of engine oil to the periphery of the
O-ring.
2. Install the turbine wheel assembly to the compressor cover
in relation to the dowel pin.
Caution
Use care not to damage the blades of turbine wheel
and compressor wheel.
Snap ring
Turbine
wheel
assembly
O-ring
Dowel pin
Dowel pin hole

INTAKE AND EXHAUST -Turbocharger15-24
"CASNAP RING INSTALLATION
Lay the assembly with the compressor cover facing down
and fit the snap ring.
Caution
Fit the snap ring with its chamfered side facing up.
"DATURBINE HOUSING INSTALLATION
Install the turbine housing in relation to the dowel pin.
Caution
Use care not to damage the blades of turbine wheel.
"EACOUPLING INSTALLATION
Install the coupling and tighten to the specified torque.
"FAWASTE GATE ACTUATOR OPERATION CHECK
Using a tester, apply a pressure of approx. 100.0 kPa to
the actuator and make sure that the rod moves.
Caution
Do not apply a pressure of more than 113.3 kPa to the
actuator. Otherwise, diaphragm may be damaged. Never
attempt to adjust the waste gate valve.
INSPECTION
TURBINE HOUSING
1. Check the housing for traces of contact with the turbine
wheel, cracks due to overheating, pitching, deformation
and other damage. Replace with a new turbine housing
if cracked.
2. Operate the waste gate valve lever manually to check
that the gate can be operated and closed smoothly.
Snap ring
Turbine wheel
assembly
Compressor
cover Chamfered edge
Dowel
pin
Dowel pin hole
Coupling
Traces of contact

INTAKE AND EXHAUST -Turbocharger15-25
COMPRESSOR COVER
Check the compressor cover for traces of contact with the
compressor wheel and other damage.
TURBINE WHEEL ASSEMBLY
1. Check the turbine and compressor wheel blades for bend,
burr, damage, corrosion and traces of contact on the
back side and replace if defective.
2. Check the oil passage of the turbine wheel assembly
for deposit and clogging.
3. In the case of water cooled type, check also the water
passage for deposit and clogging.
4. Check the turbine wheel and compressor wheel for light
and smooth turning.
Oil passage
Turbine wheel
Water passageCompressor
wheel

INTAKE AND EXHAUST -Exhaust Pipe and Main Muffler15-26
EXHAUST PIPE AND MAIN MUFFLER
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
DUnder Cover Removal and Installation (Refer to GROUP 51 - Front Bumper.)
DCrossmember Bar Removal and Installation (Refer to GROUP 32 - Engine Roll Stopper, Centermember.)
91
2 3
5
8
11
6 12
10
3
7
12
13±2 N·m
50±5 N·m13±2 N·m49±10 N·m
59±10 N·m13±2 N·m
45±5 N·m4
Exhaust main muffler removal steps
1. Exhaust main muffler
2. Exhaust pipe gasket
3. Exhaust muffler hanger
Center exhaust pipe removal steps
AA"4. Oxygen sensor
5. Center exhaust pipe
2. Exhaust pipe gasket
6. Exhaust pipe gasket
7. Exhaust pipe hangerFront exhaust pipe removal steps
8. Exhaust pipe gasket
9. Spring
10. Front exhaust pipe
11. Seal ring
12. Exhaust pipe hanger
REMOVAL SERVICE POINT
AA"OXYGEN SENSOR REMOVAL
Use special tool to remove the oxygen sensor.
MD998770
Oxygen sensor

16-1
ENGINE
ELECTRICAL
CONTENTS
CHARGING SYSTEM 2................
GENERAL INFORMATION 2................
SERVICE SPECIFICATIONS 3...............
SPECIAL TOOL 3..........................
ON-VEHICLE SERVICE 4...................
Alternator Output Line Voltage Drop Test 4......
Output Current Test 5........................
Regulated Voltage Test 7.....................
Waveform Check Using An Analyzer 8..........
ALTERNATOR 10..........................
STARTING SYSTEM 17................
GENERAL INFORMATION 17...............
SERVICE SPECIFICATIONS 17..............
ON-VEHICLE SERVICE 18..................
STARTER 18..............................
IGNITION SYSTEM 26.................
GENERAL INFORMATION 26...............
SERVICE SPECIFICATIONS 27..............
SPECIAL TOOL 27.........................
ON-VEHICLE SERVICE 28..................
Ignition Coil (With Built-in Power Transistor)
Check 28...................................
Resistive Cord Check 28.....................
Spark Plug Check, Cleaning and Replacement 29
Camshaft Position Sensor Check 29...........
Crank Angle Sensor Check 29................
Detonation Sensor Check 29..................
Waveform Check Using An Analyzer 30........
IGNITION COIL 34.........................
CAMSHAFT POSITION SENSOR 35.........
CRANK ANGLE SENSOR 35................
DETONATION SENSOR 37.................

ENGINE ELECTRICAL -Charging System16-2
CHARGING SYSTEM
GENERAL INFORMATION
The charging system uses the alternator output
to keep the battery charged at a constant level
under various electrical loads.
OPERATION
Rotation of the excited field coil generates AC voltage in
the stator.
This alternating current is rectified through diodes to DC
voltage having a waveform shown in the illustration at left.
The average output voltage fluctuates slightly with the
alternator load condition.
When the ignition switch is turned on, current flows
in the field coil and initial excitation of the field
coil occurs.
When the stator coil begins to generate power after
the engine is started, the field coil is excited by
the output current of the stator coil.
The alternator output voltage rises as the field
current increases and it falls as the field current
decreases. When the battery voltage (alternator
S terminal voltage) reaches a regulated voltageof approximately 14.4 V, the field current is cut
off. When the battery voltage drops below the
regulated voltage, the voltage regulator regulates
the output voltage to a constant level by controlling
the field current.
In addition, when the field current is constant, the
alternator output voltage rises as the engine speed
increases.
SYSTEM DIAGRAM
Stator coil
Field coil
Voltage
regulatorEngine-ECU
Charging
warning lampIgnition
switchBattery B
G
L
FRS
Voltage
Time
Approximately
14.4 V

ENGINE ELECTRICAL -Charging System16-3
ALTERNATOR SPECIFICATIONS
ItemsSpecifications
TypeBattery voltage sensing
Rated output V/A12/90
Voltage regulatorElectronic built-in type
SERVICE SPECIFICATIONS
ItemsStandard valueLimit
Alternator output line voltage drop (at 30 A) V-max. 0.3
Regulated voltage ambient
tempatvoltageregulatorV
-20_C14.2 - 15.4-
temp. atvoltage regulatorV
20_C13.9 - 14.9-
60_C13.4 - 14.6-
80_C13.1 - 14.5-
Output current-70 % of normal output current
Rotor coil resistanceΩApprox. 3 - 5-
Protrusion length of brush mm-2
SPECIAL TOOL
ToolNumberNameUse
MB991519Alternator test
harnessChecking the alternator (S terminal voltage)

ENGINE ELECTRICAL -Charging System16-4
ON-VEHICLE SERVICE
ALTERNATOR OUTPUT LINE VOLTAGE DROP TEST
Alternator
Terminal BVoltmeterAmmeter
Battery
+-
+-
This test determines whether the wiring from the
alternator “B” terminal to the battery (+) terminal
(including the fusible line) is in a good condition
or not.
(1) Always be sure to check the following before
the test.
DAlternator installation
DAlternator drive belt tension
(Refer to GROUP 11 - On-vehicle Service.)
DFusible link
DAbnormal noise from the alternator while
the engine is running
(2) Turn the ignition switch to the “LOCK” (OFF)
position.
(3) Disconnect the negative battery cable.
(4) Disconnect the alternator output wire from the
alternator “B” terminal and connect a DC test
ammeter with a range of 0 - 100 A in seriesbetween the “B” terminal and the disconnected
output wire. (Connect the (+) lead of the
ammeter to the “B” terminal, and then connect
the ( - ) lead of the ammeter to the disconnected
output wire.)
NOTE
An inductive-type ammeter which enables
measurements to be taken without
disconnecting the alternator output wire should
be recommended. Using this equipment will
lessen the possibility of a voltage drop caused
by a loose “B” terminal connection.
(5) Connect a digital-type voltmeter between the
alternator “B” terminal and the battery (+)
terminal. (Connect the (+) lead of the voltmeter
to the “B” terminal and the connect the ( - ) lead
of the voltmeter to the battery (+) cable.)