fuel MITSUBISHI TRITON 1997 Workshop Manual

GENERAL ± Vehicle Identification00-17
MODELS00100550064
Model CodeEngine modelTransmission modelFuel supply system
K62TJERDEL64G63-SOHC (1,997 m
)R4AW2 (2WD-4A/T)MPI
ENDEL6R5M21 (2WD-5M/T)
K64TYNDL64D56 (2,477m
)R5M21 (2WD-5M/T)Fuel injection
ZNDL6
ENDL6
ENDR6
CENDL6
JENDL6
K75TCENDEL64G64-SOHC (2,351 m
)V5M21 (4WD-5M/T)MPI
K74TYNDFL64D56-Turbocharger with
intercooler (2 477 m
)
V5MT1 (4WD-5M/T)Fuel injection
ZNDFL6
intercooler (2,477 m
)
ENDFR6
JERDFL6V4AW2 (4WD-4A/T)
GJENXFL6V5MT1(4WD-5M/T)
CENDFL6
JENDFL6
JENHFL6

GENERAL ± Precautions Before Service00-28
Other precautions:

Avoid prolonged and repeated contact with oils,
particularly used engine oils.

Wear protective clothing, including impervious gloves
where practicable.

Avoid contaminating clothes, particularly underpants, with
oil.

Do not put oily rags in pockets, the use of overalls without
pockets will avoid this.

Do not wear heavily soiled clothing and oil-impregnated
foot-wear. Overalls must be cleaned regularly and kept
separately from personal clothing.

Where there is a risk of eye contact, eye protection should
be worn, for example, chemical goggles or face shields;
in addition an eye wash facility should be provided.

Obtain First Aid treatment immediately for open cuts and
wounds.

Wash regularly with soap and water to ensure all oil is
removed, especially before meals (skin cleansers and
nail brushes will help). After cleaning, the application of
preparations containing lanolin to replace the natural skin
oils is advised.

Do not use petrol, kerosine, diesel fuel, gas oil, thinners
or solvents for cleaning skin.

Use barrier creams, applying them before each work
period, to help the removal of oil from the skin after work.

If skin disorders develop, obtain medical advice without
delay.

ENGINE <4G6> ± General Information/Service Specifications11A-3
GENERAL INFORMATION11100010322
Items4G634G64
Total displacement m
1,9972,351
Bore y Stroke mm85.0 x 88.086.5 x 100.0
Compression ratio9.59.5
Combustion chamberPentroof typePentroof type
Camshaft arrangementSOHCSOHC
Number of valve
Intake88
Number of valve
Exhaust88
Intake
OpeningBTDC 11
BTDC 18

Valve timing
Intake
ClosingABDC 53
ABDC 58

Valve timing
Exhaust
OpeningBBDC 63
BBDC 58

Exhaust
ClosingATDC 21
ATDC 18

Fuel system
Electronic control
multipoint fuel
injectionElectronic control
multipoint fuel
injection
Rocker armRoller typeRoller type
Auto-lash adjusterEquippedEquipped
SERVICE SPECIFICATIONS11100030342
ItemsStandard valueLimit
Alternator drive
belt
Tension NWhen checked294 ± 490±
belt
tension
When a used belt is installed343 ± 441±
When a new belt is installed490 ± 686±
Deflection
(Reference
When checked7.0 ± 9.0±
(Reference
value) mmWhen a used belt is installed7.5 ± 8.5±
When a new belt is installed5.5 ± 7.5±
Power steering
oilpumpdrive
Tension NWhen checked294 ± 490±
oil um drive
belt tensionWhen a used belt is installed343 ± 441±
When a new belt is installed490 ± 686±
Deflection
(Reference
When checked5.5 ± 7.5±
(Reference
value) mmWhen a used belt is installed6.0 ± 7.0±
When a new belt is installed4.0 ± 6.0±

C
YLIN DER H EA D G ASK ET 11 200400351
R EM OVA L A ND IN STA LLA TIO N 1
6 N m 5
0 N m 5
N m 1
7
R em oval s te p s
1 . A cce le ra to r c a ble c o nnectio n
2 . Thro ttle c a ble c o nnectio n < A /T >
3 . B ra ke b ooste r v a cu um h ose c o n-
n ectio n
4 . Ig nit io n c o il c o nnecto r
5 . E ngin e c o ola nt te m pera tu re s e nso r
c o nnecto r
6 . N ois e filt e r c o nnecto r
7 . P ow er tr a nsis to r c o nnecto r
8 . In je cto r c o nnecto rs
9 . C apacit o r c o nnecto r
1 0. Thro ttle p osit io n s e nso r c o nnecto r 1
1 . Id le s p eed c o ntr o l s e rv o c o nnecto r
1 2. E ngin e c o ola nt te m pera tu re g auge
u nit c o nnecto r
1 3. E ngin e c o ola nt te m pera tu re s w it c h
c o nnecto r < A /T >
1 4. S park p lu g c a ble
1 5. Vacu um h ose c o nnectio n
1 6. R adia to r u pper h ose c o nnectio n
1 7. W ate r h ose c o nnectio ns
1 8. Fuel r e tu rn h ose c o nnectio n
1 9. H ig h-p re ssu re fu el h ose c o nnectio n
2 0. Fro nt e xh aust p ip e c o nnectio n

ENGINE <4D5> ± General Information11B-2
GENERAL INFORMATION11100010339
Items4D56
Total displacement m
2,477
Bore x Stroke mm91.1 x 95.0
Compression ratio21
Combustion chamberVortex chamber type
Camshaft arrangementSOHC
Number of valveIntake4
Exhaust4
Valve timingIntakeOpening BTDC 20
, Closing ABDC 49

ExhaustOpening BBDC 55
, Closing ATDC 22

Fuel systemDistribution type injection pump
Rocker armRoller type
Adjusting screwElephant foot type

E
N G IN E A SSEM BLY 11 200100367
R EM OVA L A ND IN STA LLA TIO N 1
2 N m 1
6 N m 4
.9 N m
1 2
3
14
13 12
11 61
0 5 9
8
7
6
5
4
R em oval s te p s
1 . E ngin e c o ola nt te m pera tu re s e nso r
a nd g auge u nit c o nnecto r
2 . E arth c a ble c o nnecto r
3 . G lo w p lu g te rm in al
4 . E arth c a ble c o nnecto r
5 . Vacu um h ose c o nnectio n ( fo r A /C )
6 . Vacu um h ose c o nnectio n ( fo r A BS)
7 . B ra ke b ooste r v a cu um h ose
c o nnectio n
8 . A cce le ra to r c a ble c o nnectio n 9
. H eate r h ose c o nnectio ns
1 0. Thro ttle c a ble c o nnectio n < A /T >
1 1 . Fuel c u t s o le noid v a lv e o r fu el c u t
v a lv e c o ntr o lle r c o nnecto r
1 2. R evo lu tio n p ic k-u p s e nso r c o nnecto r
1 3. Leve r ( th ro ttle ) p osit io n s w it c h
c o nnecto r
1 4. E ngin e c o ola nt te m pera tu re s w it c h
c o nnecto r ( fo r A /C )

ENGINE LUBRICATION ± General Information12-2
GENERAL INFORMATION12100010053
The lubrication method is a fully force-fed, full-flow
filtration type.The corrugate fin type of engine oil cooler have
been adopted, and installed forward of the radiator.
<4D56>
Items4G634G644D56
Oil pump typeInvolute gear typeInvolute gear typeTrochoid type
Drive methodTiming beltTiming beltCrankshaft
ENGINE OILS
Health Warning
Prolonged and repeated contact with mineral oil
will result in the removal of natural fats from the
skin, leading to dryness, irritation and dermatitis.
In addition, used engine oil contains potentiallyharmful contaminants which may cause skin cancer.
Adequate means of skin protection and washing
facilities must be provided.
Recommended Precautions
The most effective precaution is to adapt working
practices which prevent, as far as practicable, the
risk of skin contact with mineral oils, for example
by using enclosed systems for handling used engine
oil and by degreasing components, where
practicable, before handling them.
Other precautions:

Avoid prolonged and repeated contact with oils,
particularly used engine oils.

Wear protective clothing, including impervious
gloves where practicable.

Avoid contaminating clothes, particularly
underpants, with oil.

Do not put oily rags in pockets, the use of
overalls without pockets will avoid this.

Do not wear heavily soiled clothing and
oil-impregnated foot-wear. Overalls must be
cleaned regularly and kept separate from
personal clothing.
Where there is a risk of eye contact, eye
protection should be worn, for example,
chemical goggles or face shields; in addition
an eye wash facility should be provided.

Obtain First Aid treatment immediately for open
cuts and wounds.

Wash regularly with soap and water to ensure
all oil is removed, especially before meals (skin
cleansers and nail brushes will help). After
cleaning, the application of preparations
containing lanolin to replace the natural skin
oils is advised.

Do not use petrol, kerosine, diesel fuel, gas
oil, thinners or solvents for cleaning skin.

Use barrier creams, applying them before each
work period, to help the removal of oil from
the skin after work.

If skin disorders develop, obtain medical advice
without delay.

13A-2
MULTIPOINT FUEL

MPI ± General Information13A-3
MULTIPOINT FUEL INJECTION (MPI)13100010265
GENERAL INFORMATION
The Multipoint Fuel Injection System consists
of sensors which detect the engine conditions,
the engine-ECU which controls the system
based on signals from these sensors, and
actuators which operate under the control of
the engine-ECU. The engine-ECU carries outactivities such as fuel injection control, idle
speed control and ignition timing control. In
addition, the engine-ECU is equipped with
several diagnosis modes which simplify
troubleshooting when a problem develops.
FUEL INJECTION CONTROL
The injector drive times and injector timing are
controlled so that the optimum air/fuel mixture
is supplied to the engine to correspond to the
continually-changing engine operation condi-
tions.
A single injector is mounted at the intake port
of each cylinder. Fuel is sent under pressure
from the fuel tank by the fuel pump, with the
pressure being regulated by the fuel pressure
regulator. The fuel thus regulated is distributed
to each of the injectors.
Fuel injection is normally carried out once for
each 2-cylinder group for every two rotationsof the crankshaft. This is called group fuel
injection. The engine-ECU provides a richer
air/fuel mixture by carrying out ªopen-loopº
control when the engine is cold or operating
under high load conditions in order to maintain
engine performance. In addition, when the
engine is warm or operating under normal
conditions, the engine-ECU controls the air/fuel
mixture by using the oxygen sensor signal to
carry out ªclosed-loopº control in order to obtain
the theoretical air/fuel mixture ratio that
provides the maximum cleaning performance
from the three way catalyst.
IDLE AIR CONTROL
The idle speed is kept at the optimum speed
by controlling the amount of air that bypasses
the throttle valve in accordance with changes
in idling conditions and engine load during
idling. The engine-ECU drives the idle speed
control (ISC) motor to keep the engine running
at the pre-set idle target speed in accordance
with the engine coolant temperature and airconditioner load. In addition, when the air
conditioner switch is turned off and on while
the engine is idling, the ISC motor operates
to adjust the throttle valve bypass air amount
in accordance with the engine load conditions
in order to avoid fluctuations in the engine
speed.
IGNITION TIMING CONTROL
The power transistor located in the ignition
primary circuit turns ON and OFF to control
the primary current flow to the ignition coil. This
controls the ignition timing in order to provide
the optimum ignition timing with respect to theengine operating conditions. The ignition timing
is determined by the engine-ECU from the
engine speed, intake air volume, engine coolant
temperature and atmospheric pressure.
SELF-DIAGNOSIS FUNCTION

When an abnormality is detected in one
of the sensors or actuators related to
emission control, the engine warning lamp
(check engine lamp) illuminates as a
warning to the driver.

When an abnormality is detected in one
of the sensors or actuators, a diagnosiscode corresponding to the abnormality is
output.

The RAM data inside the ENGINE-ECU
that is related to the sensors and actuators
can be read by means of the MUT-II. In
addition, the actuators can be force-driven
under certain circumstances.

MPI ± General Information13A-4
OTHER CONTROL FUNCTIONS
1. Fuel Pump Control
Turns the fuel pump relay ON so that current
is supplied to the fuel pump while the engine
is cranking or running.
2. A/C Relay Control
Turns the compressor clutch of the A/C
ON and OFF.3. Purge Control Solenoid Valve Control
Refer to GROUP 17.
4. EGR Control Solenoid Valve Control
Refer to GROUP 17.
GENERAL SPECIFICATIONS
ItemsSpecifications
Throttle bodyThrottle bore mm54
Throttle position sensorVariable resistor type
Idle speed control servoStepper motor type
(Stepper motor type by-pass air control system with the air
volume limiter)
Idle position switchRotary contact type, within throttle position sensor
Engine-ECUIdentification model No.E2T64271 <4G63 - Vehicles without immobilizer system>
E2T64277 <4G63 - Vehicles with immobilizer system>
E2T64272 <4G64 - Vehicles without immobilizer system>
E2T64276 <4G64 - Vehicles with immobilizer system>
SensorsAir flow sensorKarman vortex type
Barometric pressure sensorSemiconductor type
Intake air temperature sensorThermistor type
Engine coolant temperature sensorThermistor type
Oxygen sensorZirconia type
Vehicle speed sensorMagnetic resistive element type
Top dead centre sensorHall element type
Crank angle sensorHall element type
Power steering fluid pressure switchContact switch type
ActuatorsControl relay typeContact switch type
Fuel pump relay typeContact switch type
Injector type and numberElectromagnetic type, 4
Injector identification markCDH275
EGR control solenoid valveDuty cycle type solenoid valve
Purge control solenoid valveON/OFF type solenoid valve
Fuel pressure
regulatorRegulator pressure kPa328