2007 MITSUBISHI LANCER EVOLUTION transmission

ENGINE ELECTRICAL -Ignition System16-26
IGNITION SYSTEM
GENERAL INFORMATION
This system is equipped with two ignition coils (A
and B) with built-in power transistors for the No.
1 and No. 4 cylinders and the No. 2 and No. 3
cylinders respectively.
Interruption of the primary current flowing in the
primary side of ignition coil A generates a high
voltage in the secondary side of ignition coil A.
The high voltage thus generated is applied to the
spark plugs of No. 1 and No. 4 cylinders to generate
sparks. At the time that the sparks are generated
at both spark plugs, if one cylinder is at the
compression stroke, the other cylinder is at the
exhaust stroke, so that ignition of the compressed
air/fuel mixture occurs only for the cylinder which
is at the compression stroke.
In the same way, when the primary current flowing
in ignition coil B is interrupted, the high voltage
thus generated is applied to the spark plugs of
No. 2 and No. 3 cylinders.
The Engine-ECU turns the two power transistors
inside the ignition coils alternately on and off. Thiscauses the primary currents in the ignition coils
to be alternately interrupted and allowed to flow
to fire the cylinders in the order 1-3-4-2.
The Engine-ECU determines which ignition coil
should be controlled by means of the signals from
the camshaft position sensor which is incorporated
in the camshaft and from the crank angle sensor
which is incorporated in the crankshaft. It also
detects the crankshaft position in order to provide
ignition at the most appropriate timing in response
to the engine operation conditions. It also detects
the crankshaft position in order to provide ignition
at the most appropriate timing in response to the
engine operation conditions.
When the engine is cold or operated at high
altitudes, the ignition timing is slightly advanced
to provide optimum performance.
When the automatic transmission shifts gears, the
ignition timing is also retarded in order to reduce
output torque, thereby alleviating shifting shocks.
SYSTEM DIAGRAM
Barometric pressure sensor
Intake air temperature sensor
Engine coolant temperature sensor
Camshaft position sensor
Crank angle sensor
Ignition switch - ST
Vehicle speed signalEngine-ECU
Ignition coil A
Ignition coil B Ignition switch
Spark plugBattery
To tachometerCylinder No. Air flow sensor
1 4
23
Detonation sensor

MANUAL TRANSMISSION 22A........................................
MANUAL TRANSMISSION OVERHAUL 22B............................
22A-1
MANUAL
TRANSMISSION
CONTENTS

22A-2
MANUAL
TRANSMISSION
CONTENTS
GENERAL 3.................................
Outline of Changes 3...........................
GENERAL INFORMATION 3..................
SERVICE SPECIFICATION 3..................
LUBRICANTS 3..............................
SPECIAL TOOLS 4...........................
TROUBLESHOOTING 5...............
ON-VEHICLE SERVICE 40....................
Transmission Oil Check 40......................
Transmission Oil Replacement 40................
Transfer Oil Check 40..........................
Transfer Oil Replacement 40....................
Fluid Check ACD and AYC> 41.............................
Bleeding ACD and AYC> 42.............................ACD Operation Check vehicles with ACD and AYC> 42................
Hydraulic Pressure Check vehicles with ACD and AYC> 43................
Wheel Speed Sensor Output Voltage
Measurement ACD and AYC> 44.............................
TRANSMISSION CONTROL* 46...............
TRANSFER ASSEMBLY 49...................
TRANSMISSION ASSEMBLY 52...............
4WD-ECU VEHICLES WITH ACD AND AYC> 55.........
SENSOR, SWITCH AND RELAY WITH ACD OR VEHICLES WITH ACD AND
AYC> 56.....................................
HYDRAULIC UNIT Refer to GROUP27B.......
WARNING REGARDING SERVICING OF SUPPLEMENTAL RESTRAINT SYSTEM (SRS) EQUIPPED VEHICLES
WARNING!
(1) Improper service or maintenance of any component of the SRS, or any SRS-related component, can lead to personal
injury or death to service personnel (from inadvertent firing of the air bag) or to driver and passenger (from rendering
the SRS inoperative).
(2) Service or maintenance of any SRS component or SRS-related component must be performed only at an authorized
MITSUBISHI dealer.
(3) MITSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP 52B - Supplemental
Restraint System (SRS) before beginning any service or maintenance of any component of the SRS or any SRS-related
component.
NOTE
The SRS includes the following components: SRS-ECU, SRS warning lamp, air bag module, clock spring, and interconnecting
wiring. Other SRS-related components (that may have to be removed/installed in connection with SRS service or maintenance) are
indicated in the table of contents by an asterisk (*).

MANUAL TRANSMISSION -General/General Information/
Service Specification/Lubricants22A-3
GENERAL
OUTLINE OF CHANGE
With the addition of the EVOLUTION-VII, the W5M51 transmission service adjustment procedure has
been set as follows.
GENERAL INFORMATION
ItemsSpecifications
GradeRS, RS IIRS, RS II (With super cross gear)
Transmission modelW5M51
Engine model4G63-DOHC-T/C
Type5-speed, floor-shift
Gear ratio1st2.7852.785
2nd1.9501.950
3rd1.4071.444
4th1.0311.096
5th0.7200.825
Reverse3.4163.416
Final reduction ratio
(Differential gear ratio)4.5294.529
Front limited-slip differential
(Helical-gear type)Not providedProvided
TransferReduction ratio3.3073.307
Limited-slipdifferentialVCU or hydraulic multi plate
clutch (ACD)VCU or hydraulic multi plate
clutch (ACD)
SERVICE SPECIFICATION
ItemStandard value
Hydraulic unit generation oil pressureMPa1.0 - 1.6
LUBRICANTS
ItemSpecified lubricantQuantity L
Transmission oilGear oil SAE 75W-90 or 75W-85W conforming to API GL-42.8
Transfer
oilVehicles without ACD or ve-
hicles without ACD and AYCMITSUBISHI Genuine Gear Oil Part No.8149630 EX,
CASTROL HYPOY LS (GL-5, SAE 90), SHELL-LSD
(GL 5SAE80W90)orequivalent
0.55
Vehicles with ACD or vehicles
with ACD and AYC(GL-5, SAE 80W - 90) or equivalent0.6
FluidPiping between ACD and
hydraulic unitDIA QUEEN ATF SP III0.9
Pipes between ACD and hy-
draulic unit and between AYC
and hydraulic unit1.0

MANUAL TRANSMISSION - Special Tools22A-4
SPECIAL TOOLS
ToolNumberNameUse
MB991502MUT-IISub as-
semblyDiagnosis code checking
MB991529Diagnosis code
checking harness
MB991348Test harness setGsensor check
MD998330
(including
MD998331)Oil pressure gauge
(3.0 MPa)Hydraulic pressure measurement
MB991705Adapter
MB990635,
MB991113 or
MB991406
Steering linkage
pullerTie rod end and lower disconnection
GENERAL
SERVICE
TOOL
MZ203827Engine lifterSupporting the engine assembly during
removal and installation of the transmission
MB991453Engine hangerat-
tachment set
MB991721Slide hammerOutput shaft removal

MANUAL TRANSMISSION - Troubleshooting 22A-5
TROUBLESHOOTING
BASIC TROUBLESHOOTING CONDITIONS
Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points.
NOTE
Before starting the troubleshooting procedure, make sure that the following items have been checked
okay.
DIs the appropriate steering wheel installed at the center of the steering column shaft correctly?
DAre the tire, wheel size, specifications, air pressure, balance, and wear state normal?
DIs the wheel alignment normal?
DHas the engine, suspension, etc. been remodeled in such a way that it will affect the ACD and AYC
systems?
DIAGNOSIS FUNCTION
READING DIAGNOSIS CODE
Read a diagnosis code by the MUT-IIor ACD mode indicator
lamp. (Refer to GROUP 00 - How to Use Troubleshooting/
Inspection Service Points.)
NOTE
Connect the MUT-IIto the diagnosis connector (16-pin).
ERASING DIAGNOSIS CODES
When using the MUT-II
Connect the MUT-IIto the diagnosis connector (16-pin) and
erase the diagnosis code.
Caution
Turn the ignition switch to the “LOCK”(OFF) position
before connecting or disconnecting the MUT-II.
ACDmode indicator lamp

MANUAL TRANSMISSION - Troubleshooting 22A-6
INSPECTION CHART FOR DIAGNOSIS CODES
Diagnosis
code No.Diagnosis itemsReference page
12Power supply voltage (valve power supply) systemopen circuit or short-circuit22A-8
13Fail-safe relay system open circuit or short-circuit22A-8
21Wheel speed sensor systemopen circuit or short-circuit22A-9
22Wheel speed sensor systemopen circuit or short-circuit22A-9
23Wheel speed sensor systemopen circuit or short-circuit22A-9
24Wheel speed sensor systemopen circuit or short-circuit22A-9
25Wrong-diameter tire22A-11
26Wheel speed sensor (faulty output signal)22A-13
31Steering wheel sensor systemopen circuit or short-circuit22A-15
32Steering wheel sensor systemshort-circuit22A-16
33fixed22A-16
34Steering wheel sensor systemshort-circuit or output
fixed22A-17
41TPS systemopen circuit or ground22A-18
42short-circuit22A-18
45Pressure sensor systemopen circuit or ground22A-19
46open earth22A-19
47abnormal power supply22A-20
51Longitudinal G sensor systemopen circuit or short-circuit22A-21
52defective sensor22A-22
56Lateral G sensor systemopen circuit or short-circuit22A-23
57defective sensor22A-24
61Stop lamp switch systemopen circuit22A-25
62ACD mode switch systemstuck22A-26
63Parking brake switch systemshort-circuit or not re-
turned to original position22A-27
65ABS monitor systemopen circuit or defective
ABS22A-28
71Proportional valve systemopen circuit or short-circuitRefer to
GROUP27B
72Directional control valve systemopen circuit or short-circuit
GROUP27B.
73Directional control valve systemopen circuit or short-circuit
74Proportional valve systemopen circuit or short-circuit22A-29

MANUAL TRANSMISSION - Troubleshooting 22A-7
Diagnosis
code No.Reference page Diagnosis items
81Electric pump relay systemopen circuit or short-circuit22A-29
82electric pump malfunction
or pressure sensor defect22A-30
84AYC control errorRefer to
GROUP 27B.
85ACD control error-
NOTE
Code No.85 is not a code number output due to malfunction, but a code number output when control
for the 4WD-ECU to protect the ACD is stopped in excessive driving. ACD control can be recovered
by turning the ignition switch ON to OFF to ON.