low oil pressure MITSUBISHI LANCER 2006 User Guide

ON-VEHICLE SERVICE
POWER STEERING37-15
6. Check whether or not the hydraulic pressure is the standard value when no-load conditions are
created by fully opening the shut-off valve of the
pressure gauge.
Standard value: 0.2 − 0.7 MPa
7. If it is not within the standard value, the probable cause is a malfunction of the oil line or steering
gear, so check these parts and repair as
necessary.
8. Turn the steering wheel all the way to the left or right; then check whether or not the retention
hydraulic pressure is the standard value.
Standard value: 8.8 − 9.5 MPa
9. If not the standard value, overhaul the steering gear. Remeasure fluid pressure.
10. Remove the special tools, and then tighten the
pressure hose to the specified torque.
Tightening torque: 57 ± 7 N⋅m
11. Bleed the system (Refer to P.37-14).
POWER STEERING PRESSURE SWITCH
CHECK
M1372007200324
ACX01134 AB
Temperature
gaugeAdapter
(MB991548)
Oil reservoir Oil
pump
Adapter
(MB991549)
Shut-off valve
Pressure gauge
(MB990662)
1. Disco nnect the pre s sure hose from the oil pump ,
an d then con nect the followin g sp ecial too l s.
•Power steering oil pressure gauge (MB990 662)
•Power steering oil pressure gauge ad apter (pump
side) (MB99154
8)
•Power steering oil pressure gaug e a dapte r (ho s e
side) (MB99154
9)
2. Bleed air , and the n turn t he steering wheel several
times while the vehicle is not moving so that the
tempe r atu r e o f th e flu i d rise s to approximately 50
−
60
°C.
3. Th e engine should be idling.
4.Disco nnect the conne ctor fo r the o il pr essure
switch , and p l ace an o h mmeter a t the switch .
5.Gradua lly close the shut-of f valve of the pressure
g auge a nd in crease the hyd r aulic pre ssu re, the n
check wheth e r or no t the h y drau lic pressure that
a c tivates the switch is the st a ndard valu e.
St andard va lue: 1.5 − 2.0 MPa
6.Gradua lly open the shut-of f va lve and re duce the
h y drau lic p r essure; then check whethe r o r n o t the
h y drau lic pressure that de activate s the switch is
th e st and ard va lue.
St andard va lue: 0.7 − 2.0 MPa
7.Remove the special tools, and then tighten the
p r essure hose to the specified torque .
Ti ghte n ing torque: 57 ± 7 N⋅m
8.Bleed the system (Refer to P.37-14).
TIE ROD END BALL JOINT DUST COVER
CHECK
M13720086 0026 2
1.Press th e dust co ver wit h you r fing er to check
whet her the dust cover is cra cke d or da mage d.
2.If the du st cover is cracked o r damaged, repla c e
th e tie rod end .
NOTE: If the dust cover is cra cke d or da mag ed,
th
e ball jo int could be da mage d.
STEERING COLUMN SHAFT ASSEMBL Y
SHOCK ABSORBING MECHANISM
CHECK
M13720135 0009 0
If a collision accid ent occu rs or seve re imp a ct is
applied on
the steering w heel, the collision energy
abso
r bing mechanism ma y h a ve opera t ed. Once the
mechanism
has o perate d , it will b e ino perative e v en
it has
suf f er ed no app a r en t d a mage . De termin e if the
steering colu
mn shaf t can b e reused b y th e following
proce
dure. If the collision en ergy a b sor b ing mecha
-
nism has already operated, rep l ace the steering col-
umn shaft assembly .
If any excessive radial fre e pla y on the steering
wh
eel is fo und with the tilt lever in the lock po sit i on,
always ch
eck the steering shaf t assembly .

Removal steps
1.Pressure switch connector
2.A/C compressor harness connector
bracket
3.Drive belt
4.Suction hose
5.Eye bolt
6.O-ring
7.Pressure hose
8.Oil pump assembly
9.Oil pump brace
POWER STEERING OIL PUMP ASSEMBLY
POWER STEERING37-36
<2000>
AC200116AB
22 ± 4 N·m
12 ± 2 N·m
22 ± 4 N·m
49 ± 9 N·m 57 ± 7 N·m
1
5
4
3
6
2
7
49 ± 9 N·m
Removal steps
1.Pressure switch connector
2.Drive belt
3.Suction hose
4.Pressure hose
<>5.Oil pump assembly
6.A/C compressor harness
7.Power steering pump bracket
REMOVA L SER VICE POINT
<> OIL PUMP ASSEMBL Y REMOV A L
<2000>
With the eng ine lif t ed by the jack, remove the o il
pump
assembly mounting b o lt (lower side) a t the pul
-
ley side .
INSPECTIONM13720053 0018 7
•Check the drive belt for cracks.
•Check th e pulley for une ven r o t a tion.
Remova l st ep s ( C ont inu e d)

Removal steps
1.Oil reservoir
>>C<<2.Suction hose
>>B<<3.Return hose
•Clock spring (Refer to GROUP 52B,
Air Bag Modules and Clock Spring
P.52B-194).
•Centermember (Refer to GROUP 32,
Engine Roll Stopper Centermember
P.32-7).
•Front exhaust pipe (Refer to GROUP
15, Exhaust Pipe and Main Muffler
P.15-10).
4.Steering gear and joint connecting bolt
5.Rear roll stopper connecting bolt
<>6.Eye bolt
7.Gasket
8.Pressure hose assembly
<>9.Return tube
10.O-ring
POWE R STEERING HOSES
POWER S T E E RING37-42
REMOVA L SER V ICE POINT
<> EYE BOLT /RETURN TUBE
REMOV
A L
CAUTION
If the joint cover grommet has been removed,
install it properly as follows.
AC304922AB
A
B
Joint cover
grommet
Steering gear
Align the joint cover grommet notch (arrow A)
with the steering gear lug (arrow B), and then
install the steering joint cover to the steering
gear.
1. Loosen the crossmember mounting bolts and nuts, and lower the crossmember to a position so
that the eye bolts or return tube at the steering
gear side can be removed.
NOTE: In this case, do not remove the crossmem-
ber mounting bolts and nuts.
2. Remove the eye bolts or return tube.
INSTALLATION SERVICE POINTS
>>A<< RETURN HOSE INSTALLATION

AC100277 ABReturn hose
Install the return hose so that the marking is posi-
tioned as shown in the illustration.
>>B<< RETURN HOSE INSTALLATION
AC305132AB
Return hose
Return tubeReturn hose

Install the return hose so that the markings are posi-
tioned as shown in the illustration.
>>C<< SUCTION HOSE INSTALLATION
Install the suction hose (oil pump side) so that the
marking is positioned forward.

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

ENGINE AND TRANSMISSION
CONFIGURATION DIAGRAMS80-12
ENGINE AND TRANSMISSION <4G1-MPI (LHD)> (CONTINUED)
AC301129AE
B-118B-101 B-102
B-113
B-114
B-115
B-116 B-117
Earth cable
Control wiring
harness
Connector colour
code
B : Black
BR : Brown
G : Green
GR : Grey
L : Blue
None : Milk white
O : Orange
R : Red
V : Violet
Y : Yellow
Connector
symbol
-101
thru
-118
B
*
B-101(2-BR)Emission solenoid valve (EGR system)
B-102(4-GR)Inlet manifold absolu te pressure sensor
B-103(6-B)Throttle body idle speed control servo
B-104(3-GR)Ignition coil 1
B-105(2-B)Emission solenoid va lve (Purge control
system)
B-107(3-B)Camshaft position sensor
B-108(3-GR)Output shaft speed sensor
B-109(3-B)Input shaft speed sensor
B-110(2-B)Back-up lamp switch
B-111(2-B)Water temperature sensor unit

ENGINE AND TRANSMISSION
CONFIGURATION DIAGRAMS80-16
ENGINE AND TRANSMISSION <4G1-MPI (RHD)> (CONTINUED)
AC301132AE
B-117B-101 B-102
B-113
B-114
B-115
B-116
Earth cable
Control wiring
harness
Connector colour
code
B : Black
BR : Brown
G : Green
GR : Grey
L : Blue
None : Milk white
O : Orange
R : Red
V : Violet
Y : Yellow
Connector
symbol
-101
thru
-118
B
*
B-101(2-BR)Emission solenoid valve (EGR system)
B-102(4-GR)Inlet manifold absolu te pressure sensor
B-103(6-B)Throttle body idle speed control servo
B-104(3-GR)Ignition coil 1
B-105(2-B)Emission solenoid va lve (Purge control
system)
B-107(3-B)Camshaft position sensor
B-108(3-GR)Output shaft speed sensor
B-109(3-B)Input shaft speed sensor
B-110(2-B)Back-up lamp switch

CENTRALIZED JUNCTION
CIRCUIT DIAGRAMS90-20
PASSENGER COMPARTMENT
AC207745
(Connected directly to battery positive terminal)
Front of vehicle26
AF
No.Power supply circuitNameRated
capacity (A)Housing
colourLoad circuit
1Ignition switch (IG1)Fuse10RedCapacitor and ignition coil
27.5BrownABS warning lamp, brake warning
lamp, charging warning lamp, check
engine warning lamp, column switch,
combination meter, ETACS-ECU, low
fuel warning lamp, oil pressure
warning lamp, SRS air bag warning
lamp, SRS-ECU and vehicle speed
sensor
37.5BrownA/T control relay, combination meter,
engine-A/T-ECU, ETACS-ECU, input
shaft speed sensor, output shaft
speed sensor, rear combination lamp
and SRS-ECU
4−−−
5Ignition switch (IG2)7.5BrownA/C compressor relay, A/C-ECU,
blower relay, rear window defogger
relay, front-ECU, heated seat relay,
heater control unit and outside/inside
air selection damper control motor
6Rear window
defogger relay7.5BrownRemote controlled mirror
7Ignition switch (ACC)20YellowFront-ECU and windshield wiper
motor
8Ignition switch (IG1)7.5BrownEngine-A/T-ECU, engine-ECU, fuel
pump relay (1) and fuel pump relay (2)
9Ignition switch (ACC)15BlueCigarette lighter
10−−−
117.5BrownAccessory socket relay and Remote
controlled mirror
12Ignition switch (IG2)7.5BrownABS-ECU
13Ignition switch (ACC)−−−
1415BlueETACS-ECU and rear wiper motor

HEADLAMP
CIRCUIT DIAGRAMS90-115
COLUMN-ECU POWER
SOURCEIGNITION
SWITCH (IG1) IGNITION
SWITCH (IG2)
COLUMN SWITCH
·ABS
·BRAKE WARNING LAMP
·CHARGING SYSTEM
·ENGINE CONTROL SYSTEM
·FUEL WARNING LAMP
·INVECS-II 4A/T
·METER AND GAUGE
·OIL PRESSURE WARNING
LAMP
DIMMER·
PASSING
SWITCH
LIGHTING
SWITCH
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Grey R : Red P : Pink V : Violet PU : Purple

FRONT FOG LAMP
CIRCUIT DIAGRAMS90-135
IGNITION
SWITCH (IG2)IGNITION
SWITCH (IG1)
COLUMN-ECU
LIGHTING
SWITCH
COLUMN
SWITCH ETACS-ECU POWER
SOURCE
·ABS
·BRAKE WARNING LAMP
·CHARGING SYSTEM
·ENGINE CONTROL SYSTEM
·FUEL WARNING LAMP
·INVECS-II 4A/T
·METER AND GAUGE
·OIL PRESSURE WARNING
LAMP
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White
Y : Yellow SB : Sky blue BR : Brown O : Orange
GR : Grey R : Red P : Pink V : Violet PU : Purple

REAR FOG LAMP
CIRCUIT DIAGRAMS90-163
IGNITION
SWITCH (IG2)IGNITION
SWITCH (IG1)
ETACS-
ECU
POWER
SOURCE
COLUMN-ECU COLUMN
SWITCH
LIGHTING
SWITCH
REAR FOG
LAMP RELAY
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White
Y : Yellow SB : Sky blue BR : Brown O : Orange
GR : Grey R : Red P : Pink V : Violet PU : Purple
·ABS
·BRAKE WARNING
LAMP
·CHARGING SYSTEM
·ENGINE CONTROL
SYSTEM
·FUEL WARNING LAMP
·INVECS-II 4A/T
·METER AND GAUGE
·OIL PRESSURE
WARNING LAMP