component MITSUBISHI LANCER 2006 User Guide

37-1
GROUP 37
POWER STEERING
CONTENTS
GENERAL INFORMATION . . . . . . . .37-3
SERVICE SPECIFICATIONS . . . . . . .37-6
LUBRICANTS . . . . . . . . . . . . . . . . . .37-7
SEALANTS . . . . . . . . . . . . . . . . . . . .37-7
SPECIAL TOOLS . . . . . . . . . . . . . . . .37-8
ON-VEHICLE SERVICE . . . . . . . . . . .37-11
STEERING WHEEL FREE PLAY CHECK . 37-11
STEERING ANGLE CHECK . . . . . . . . . . . . 37-11
TIE ROD END BALL JOINT TURNING
TORQUE CHECK . . . . . . . . . . . . . . . . . . . . 37-12
STATIONARY STEERING EFFORT
CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37-12
STEERING WHEEL RETURN TO
CENTRE CHECK . . . . . . . . . . . . . . . . . . . . 37-13
DRIVE BELT TENSION CHECK. . . . . . . . . 37-13
FLUID LEVEL CHECK . . . . . . . . . . . . . . . . 37-13
FLUID REPLACEMENT . . . . . . . . . . . . . . . 37-13
POWER STEERING SYSTEM AIR
BLEEDING . . . . . . . . . . . . . . . . . . . . . . . . . 37-14
OIL PUMP PRESSURE TEST . . . . . . . . . . 37-14
POWER STEERING PRESSURE
SWITCH CHECK . . . . . . . . . . . . . . . . . . . . . 37-15
TIE ROD END BALL JOINT DUST
COVER CHECK . . . . . . . . . . . . . . . . . . . . . 37-15
STEERING COLUMN SHAFT ASSEMBLY
SHOCK ABSORBING MECHANISM
CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37-15
STEERING WHEEL . . . . . . . . . . . . . .37-17
REMOVAL AND INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . 37-17
REMOVAL AND INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . 37-18
Continued on next page
WARNINGS REGARDING SERVICING OF SUPPLEMENTAL RESTRAINT SYSTEM (SRS) EQUIPPED VEHICLES
WARNING
•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 inad vertent firing of the air bag) or to the driver and
paassenger (from renderin g the SRS inoperative).
•Service or maintenance of any SRS component or SRS-related component must be performed only at an
authorized MITSUBISHI dealer.
•MITSUBISHI dealer personnel must thoroughly review th is manual, and especially its GROUP 52B - Supplemental
Restraint System (SRS) before begi nning any service or maintenance of any component of the SRS or any
SRS-related component.
NOTE
The SRS includes the following components: SRS air bag control unit, SRS warning light, front impact sensors, 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 (*).

ON-VEHICLE SERVICE
POWER STEERING37-14
POWER STEERING SYSTEM AIR
BLEEDING
M1372002200330
Perform air bleeding procedure as necessary after
replacing the steering gear or the steering fluid lines.
1. Raise and support the front wheels.
2. Disconnect the ignition coil connectors (Refer to GROUP 16, Ignition Coil
P.16-38 or P.16-39).
CAUTION
Perform air bleeding only while cranking the
engine. If air bleeding is performed while the
engine is running, air could enter the fluid. Dur
-
ing air bleeding, refill the steering fluid supply so
that the level never falls below the "MIN" mark on
the oil reservoir.
3. Turn the steering wheel all the way to the left and
right five or six times wh ile using the starter motor
to crank the engine intermittently several times
(for 15 to 20 seconds).
4. Connect the ignition coil connectors (Refer to GROUP 16, Ignition Coil
P.16-38 or P.16-39).
5. Start the engine (idling).
6. Turn the steering wheel to the left and right until there are no air bubbles in the oil reservoir.
7. Confirm that the fluid is not milky, and that the level is between "MAX" and "MIN" marks.
8. Confirm that there is very little change in the fluid
level when the steering wheel is turned left and
right.
CAUTION
If the fluid level rises suddenly after the engine is
stopped, the air has not been completely bled. If
air bleeding is not complete, there will be abnor
-
mal noises from the pump and the flow-control
valve, and this condition could cause reduce the
life of the power steering components.
ACX01131With engine running With engine stoppedAC
Fluid level change: Within 5 mm
9. Confirm that the change in the fluid level is no more than 5 mm when the engine is stopped and
when it is running.
10.If the change of the fluid level is 5 mm or more,
the air has not been completely bled from the
system. The air bleeding procedure must be
repeated.
OIL PUMP PRESSURE TEST
M1372002300315
ACX01133
Temperature
gauge
Oil reservoir
Adapter
(MB991548)
Oil
pump Adapter
(MB991549)
AB
Shut-off valve
(fully closed)
Pressure
gauge
(MB990662)
1. Disconnect the pressure hose from the oil pump,
and then connect the following special tools.
•Power steering oil pressure gauge (MB990662)
•Power steering oil pressure gauge adapter (pump
side) (MB991548)
•Power steering oil pressure gauge adapter (hose
side) (MB991549)
2. Bleed air, then turn the steering wheel several times while the vehicle is not moving so that the
temperature of the fluid rises to approximately 50
−
60
°C.
3. Start the engine and idle it at 750 ± 100 r/min.
CAUTION
The pressure gauge shut-off valve must not
remain closed for more than 10 seconds.
4. Fully close the shut-off valve of the pressure gauge and measure the oil pump relief pressure
to confirm that it is within the standard value
range. Open it again immediately after checking
the pressure.
Standard value: 8.8 − 9.5 MPa
5. If it is not within the standard value, replace the oil pump.

POWER STEERING GEAR BOX AND LINKAGE
POWER STEERING37-33
Specified sealant: 3M ATD Part No.8661 or
equivalent
2. Secure the threaded portion of the end plug at two places by using a punch.
>>J<< RACK SUPPORT COVER/LOCK
NUT INSTALLATION
1. Position the rack at its centre.
2. Apply specified sealant to the threaded part of the
rack support cover.
Specified sealant:
3M ATD Part No.8661 or equivalent
AC100273
MB990607
MB991621
AJ
3.Use the fo llo wing special to ol to tigh ten the rack
suppor t cover to 2 3
± 2 N⋅m.
•To rque wren ch socket (MB990607 )
•Piston driver (MB9916 21:
4.T u rn the rack suppo rt cover 30° anticlockwise .
5.Use the special tool to hold the r a ck sup port
cove r , and t hen tighten the lock nut to 59
± 10
N
⋅m.
>>K<< T O T A L PINION T O RQUE
ADJUSTMENT
CAUTION
•Be sure there is no ratcheting or catching
when operating the rack towards the shaft.
•
AC100274 AB
MB991006
Measure the total pinion torque through the
whole stroke of the rack.
1. Using special tool preload socket (MB991006),
rotate the pinion shaft at the rate of one rotation in
4 to 6 seconds to check the total pinion torque and
the change in torque.
Standard value:
Total pinion torque: 0.8 − 2.1 N⋅m
[Change in torque: 0.6 N
⋅m or less]
Total pinion torque: 0.7 − 2.1 N⋅m
[Change in torque: 0.6 N
⋅m or less]
CAUTION
When adjusting, set at the highest value of the
standard value range.
NOTE: If the total pinion toque cannot be adjusted
to the standard value within the specified return
angle, check the rack support cover components
and replace any parts if necessary.
2. If the total pinion torque or the change in torque is outside the standard value, move the rack support
cover 0
− 30°, and adjust the pinion torque again.
>>L<< TAB WASHER/TIE ROD
INSTALLATION
ACX01163 AB
After installing the tie rod to the rack, fold tab washer
end (two locations) to tie rod notch.
>>M<< BELLOWS BAND INSTALLATION
ACX01164 AB
W MB991561
Adjusting bolt Stopper
1. Turn the adjusting bolt of special tool boot band
crimping tool (MB991561) to adjust the opening
dimension (W) to the standard value.

70-1
GROUP 70
COMPONENT
LOC ATIONS
CONTENTS
ECU . . . . . . . . . . . . . . . . . . . . . . . . . .70-2
RELAY . . . . . . . . . . . . . . . . . . . . . . . .70-5
SENSOR. . . . . . . . . . . . . . . . . . . . . . .70-6
FUSIBLE LINK AND FU SE . . . . . . . .70-11
EARTH CABLE . . . . . . . . . . . . . . . . .70-12
SOLENOID VALVE . . . . . . . . . . . . . . .70-13
DIODE . . . . . . . . . . . . . . . . . . . . . . . . .70-14
EARTH . . . . . . . . . . . . . . . . . . . . . . . .70-15
INSPECTION CONNECTOR AND
SPARE CONNECTOR . . . . . . . . . . . .70-19

ECU
COMPONENT LOCATIONS70-2
ECU
M1701000500311
NameSymbolNameSymbol
A/C-ECUEFront-ECUB
ABS-ECUAHeater control unit E
Column switch (incorporating
Column-ECU)DImmobilizer-ECUG
Engine-A/T-ECU IPower window main switch
(incorporating ECU)K
Engine-ECU IPower window sub switch
(incorporating ECU)J
ETACS-ECUFSRS-ECUH
Cooling fan motor drive control unitC
AC301182
DE
AB
C
FGHI
AB

DE
AB
C
FGHI

AC304537
JK*
AE
ECU
COMPONENT LOCA TIONS70-3
NOTE: *: also eq uipp ed on the rear doors.
AC100209AC
A
ABS-ECU

Hydraulic unit
AC206790
A
AD
ABS-ECU
Hydraulic unit

AC301728AB
BFront-ECU
Battery
AC300571
C
ACRadiator fan
Cooling fan motor
drive control unit
AC301746
DColumn switch
(incorporating
column-ECU)
AB
AC501783AB
E
Heater control unit
or A/C-ECU

AC501784AB
E
A/C-ECU

AC301739AC
F
ETACS-ECU
Junction
block
AC301733AB
Immobilizer-ECU
G
AC301747AB
SRS-ECU
H
AC100229AI
Engine-ECU or
engine-A/T-ECU I
AC301749AB
Power window
sub switch
(incorporating
ECU)
J
AC301748AB
Power window
main switch
(incorporating
ECU)
K
ECU
COMPONENT LOCA
TIONS70-4

RELAY
COMPONENT LOCATIONS70-5
RELAY
M1701000400369
NameSymbolNameSymbol
A/C compressor relayAHeated seat relayB
A/T control relayAHorn relayA
Accessory socket relayBIgnition coil relayA
Blower relayBPower window relayB
Engine control relayARadiator fan relayA
Front fog lamp relayARear fog lamp relayB
Fuel pump relay (1)BRear window defogger relayB
Fuel pump relay (2)B
AC301758AB
A
B
AC303951AB
A/C compressor relayEngine control relay
Horn relay
Front fog lamp relay
Radiator fan relay
A/T control relay
Ignition coil relayA
AC301760
Fuel pump relay (1) Power window relay
Rear window defogger relay
Blower relay
Heated seat relay
Fuel pump relay(2)
Accessory socket relay
Rear fog lamp relayAB
B

SENSOR
COMPONENT LOCATIONS70-6
SENSOR
M1701000600909
NameSymbolNameSymbol
Air cleaner air flow sensor <4G6>FOutput shaft speed sensor J
Air thermo sensorMOutside thermo sensor A/C>H
Camshaft position sensorDPhoto sensor L
Engine control detonation sensorBSide impact sensor (Front)N
Engine control oxygen sensor (Front)GSide impact sensor (Rear)O
Engine control oxygen sensor (Rear)QThrottle body throttle sensorC
Engine crank angle sensorAVehicle speed sensor E
Heater water temperature sensor
MWater temperature sensor unitI
Inlet manifold absolute pressure sensor
(incorporating intake air temperature
sensor) <4G1>CWheel speed sensor (Front)P
Input shaft speed sensor JWheel speed sensor (Rear)R
Inside air temperature sensor
K
AC501790
BDCFEA
GHIJ
MKL
AB
AC501791AB
NO
POR
** *
*
NO
TE: *: also eq uipp ed at t he rig h t side.

AC208762
A
AD
Timing belt front
upper coverTiming belt front
lower coverEngine crank
angle sensor
<4G1>
Engine crank angle
sensor connector
AC302008
A<4G6>
ABHeat protector
Crankshaft
sprocket
Engine crank angle
sensor connectorEngine crank
angle sensor
AC301752
B
AB
Ignition coil 2
<4G1>
Engine control detonation
sensor connector
Engine control
detonation sensor
AC302009
B
AB
Hydraulic unit
<4G6>
Alternator
Engine control detonation
sensor connectorEngine control
detonation sensor
AC208541
C
AE
<4G1>
Throttle body
Throttle body
throttle sensor
Inlet manifold absolute pressure sensor
(incorporating intake air temperature sensor)
AC302479
AB
C
Throttle body
<4G6>
Throttle body
throttle sensor
SENSOR
COMPONENT LOCA TIONS70-7