Fuel pump relay MITSUBISHI ECLIPSE 1991 Service Manual
[x] Cancel search | Manufacturer: MITSUBISHI, Model Year: 1991, Model line: ECLIPSE, Model: MITSUBISHI ECLIPSE 1991Pages: 1216, PDF Size: 67.42 MB
Page 455 of 1216
14-IFUEL SYSTEM
CONTENTS
AUTO-CRUISECONTROLSYSTEM...........................................109AUTO-CRUISECONTROL.......................................................140SERVICEADJUSTMENTPROCEDURES..............................135Accelerator Cable, Throttle Cable and Auto-cruise
ControlCableInspectionandAdjustment........................136Auto-cruise
ControlSystemInspection.............................135lndrvrdualPartsInspection..................................................137SPECIFICATIONS.....................................................................109GeneralSpecifications.......................................................109ServiceSpecifications
.........................................................109Torque Specrfications..........................................................109TROUBLESHOOTING...............................................................110Auto-CruiseControlCircurt................................................128Auto-cruise
ControlComponentsLocation........................126Auto-cruise Control Related Harnesses
.............................125Check Chart
........................................................................114Input Check.........................................................................123Self-diagnosis
Check..........................................................121Troubleshootrng
Quick-referenceChart..............................110ENGINECONTROL.......................................................................105ENGINECONTROL..................................................................107--SERVICEADJUSTMENTPROCEDURES..............................106Accelerator Cable Inspection and Adjustment..................106Accelerator Switch Inspectron and Adjustment................106SPECIFICATIONS.....................................................................105Lubricants.............................................................................105Sealant.................................................................................105ServiceSpecifications
..........................................................105TorqueSpecifications..........................................................105TROUBLESHOOTING...............................................................105FUELSYSTEM..............................................................................2FUELFILTER............................................................................104FUELLINEANDVAPORLINE..............................................102FUEL PUMP, FUEL GAUGE UNIT ANDOVERFILL LIMITER(TWO-WAY VALVE)
Switch........................................................64Air Conditioner Power Relay
..............................................67Components
Location......................................................56
ControlRelay
.................................................................66EGRControlSolenoidValve...............................................67EGRTemperatureSensor..................................................64Engine Coolant Temperature Sensor
.................................62IdlePosrtionSwitch
...........................................................63IdleSpeedControlServo
.............................
....................65InhibitorSwitch....................................................................65hjeCtOrS................................................................................65IntakeAirTemperatureSensor..........................................6’2MalfunctionlndtcatorLight
..........................................58MotorPosition
Sensor................................................63OxygenSensor
.................................................................64Power Steering 011 Pressure Swatch...........................65PowerTransistor
................................................................67PurgeControlSolenoidValve.........................................67
Self-Diagnosis.......................................................................
ThrottlePositronSensor.....................................................
Vehicle Speed Sensor.........................................................MPI
SYSTEMINSPECTION<2.0L DOHCEngine>...........Air Conditioner Power Relay..............................................
Arr Conditioner Swatch........................................................
Components Location
.........................................................
Control
Relay.......................................................................
EGR Control Solenoid Valve...............................................
EGR Temperature Sensor
...................................................
Engine Coolant Temperature Sensor
.................................Fuel Pressure Control Valve...............................................
Idle Position Switch
............................................................
Idle
SpeedControlServo...................................................Injectors
................................................................................
Intake Air Temperature Sensor..........................................
Malfunction Indicator Light.................................................
Oxygen Sensor
....................................................................
Power
Steering
OilPressureSwitch.................................Power Transistor
.................................................................
Purge Control Solenoid Valve.............................................
Self-Diaanosis.......................................................................
58
63
2382
79
688182
79
7682
77
79
79
76
727879
82
8273ThrottletiPosition Sensor
.....................................................77Vehicle Speed Sensor
.........................................................79SERVICE ADJUSTMENT PROCEDURES<1.8L Engine>........................................................................41Curb Idle Speed Inspection
................................................41EGR Valve Control Vacuum Check....................................47Fuel Pressure Test
..............................................................44Fuel Pump Operation Check
..............................................44Idle Speed Control and Throttle Position
Sensor Adjustment
..............................................................
41Purge Port Vacuum Check
.................................................47Release of Residual Pressure from
High Pressure Fuel Hose
...................................................
44Throttle
Body(Throttle Valve Area)Cleaning....................43SERVICE ADJUSTMENT PROCEDURES<2.0LDOHCEngine>............................................................48Basic Idle Speed Adjustment
.............................................
48
Curb Idle Speed Inspection
................................................48EGR Valve Control Vacuum Check....................................55Fuel Pressure Test
..............................................................52Fuel Pump Operation Check
..............................................51Idle Position Switch Adjustment........................................52Purge Port Vacuum Check
.................................................55Release of Residual Pressure from
High Pressure Fuel Hose
...................................................51Throttle Body (Throttle Valve Area) Cleaning....................51ThrottlePositionSensorAdjustment.................................50SPECIALTOOLS......................................................................6SPECIFICATIONS.....................................................................2GeneralSpecifications.........................................................2Sealant and Adhesive
.........................................................5Service Specifications
..........................................................4Torque Specifications
..........................................................5THROlTLEBODY<1.8LEngine>........................................85THROlTLE BODY <2.0L DOHC Engine>............................89TROUBLESHOOTING...............................................................6
Page 456 of 1216
14-2FUEL SYSTEM - Specifications
FUEL SYSTEM
SPECIFICATIONS
GENERAL SPECIFICATIONSNW%-
4.8L Engine>
Items
Fuel
Tank capacity
Return system
Filter
Fuel pump
Type
Driven by
Throttle bodyThrottle
bore
Throttle position sensor
Idle speed control servo
Idle position switchMotor position
sensor
Engine control unitIdentification
model No.
For Federal and Canada
For California
SensorsAir flow
sensor
Barometric pressure sensor
Intake air temperature sensor
Engine coolant temperature sensorOxygen
sensor
Vehicle speed sensorInhibitor switch
No. 1 cylinder top dead center sensor
Crank angle sensor
EGR temperature sensor
Control relay type
Injector type and number
Injector identification mark
Purge control solenoid valve
EGR control solenoid valve
Fuel pressure regulator
Regulated pressure
Specificationsliter
(gal.) 60 (15.9)
Equipped
High pressure type
Electrical, in-tank type
Electric motor
mm (in.) 50 (1.97)
Variable resistor type
Electric motor
Contact type, within idle speed control servo
Variable resistor type
E2T33674
E2T33673
Karman vortex type
Semiconductor diffusion typeThermistor typeThermistor type
Zirconia type
Reed switch type
Contact switch type
Photo interrupter type
Photo interrupter typeThermistor type
Contact switch type
Electromagnetic, 4
N210H
ON/OFF type solenoid valveDuty
cycle type solenoid valve
kPa (psi) 335 (47.6)
Page 457 of 1216
FUEL SYSTEM - Specifications14-3
<2.0L DOHC Engine>
ItemsSpecifications
Fuel
Tank capacityliter (gal.) 60 (15.9)
Return systemEquipped
FilterHigh pressure type
Fuel pump
TypeElectrical, in-tank type
Driven byElectric motor
Throttle bodyThrottle
boremm (in.) 60 (2.36)Throttle position
sensorVariable resistor type
Idle speed control servoStepper motor type
The stepper motor type by- ass air controlsystem with the Fast Idle6!rr Valve (FIAV)
Idle position switchContact switch type
Engine control unitIdentification
model No.
For Federal
E2T36574
E2T36576
E2T36578
E2T36582
For California
E2T36573
E2T36575
E2T36577
E2T36581
SensorsAir flow
sensorKarman vortex type
Barometric pressure sensorSemiconductor diffusion-type
Intake air temperature sensorThermistor type
Engine coolant temperature sensorThermistor type
Oxygen sensorZirconia type
Vehicle-speed sensorReed switch typeDetonation
sensor
Top dead center sensorPhoto interrupter type
Crank angle sensorPhoto interrupter type
EGR temperature sensor
Power steering oil pressure switchContact switch type4ctuators
Control relayContact switch type
Resistor identification model No.E8T05873
Injector type and numberElectromagnetic, 4
Injector identification mark
B450L
B390L
Purge control solenoid valveON/OFF type solenoid valve
EGR control solenoid valve
Fuel pressure control solenoid valve
gate solenoid valve
Page 461 of 1216
FUEL SYSTEM - Troubleshooting14-7
Symptom
Engine will not startor start too hard(Cranks OK)
Rough idle or engine
stumbles
Trouble in the MPI systemCheck for output of self-diagnosis
code.Read the code with a voltmeter.Malfunction
of the fuel pump drive control systemCheck the fuel pump drive controlsystem
and the fuel pump.Malfunction
of the ignition timing control systemMalfunction
of the power transistor
Check the ignition timing.
Check the power transistor as a single
unit.
Power is not supplied to the engine control unit.Check the power supply circuit.Malfunction
of the control relayMalfunction
of the injector
Replace.
Check the injector drive circuit.
Check the injector as a single unit.
The fuel pressure is not proper.Check the fuel pressure.
I
Vacuum hose disconnected or damagedRepair or replace.IMalfunction of
the engine control unit) Replace.
Wire breakage or short circuit occurs in theRepair or replace.
harness, or the connector is improperly connected.
Trouble in the MPI systemCheck for output of self-diagnosis
code.Read the code with a voltmeter.Malfunction
of the sensor
l Intake air temperature sensor
Check the sensor-related circuit.
Check the sensor as a single unit
Probable causeRemedy
l Engine coolant temperature sensorl Barometric pressure sensor
l Ignition switchl Idle position switchl Throttle position sensorl No. 1 cylinder TDC sensor, crank angle sensor
l TDC sensor, crank angle sensor<2.0L DOHC Engine>
l Power steering oil pressure switch
l Air conditioner switch
l Inhibitor switch l Motor position sensor <1.8L Engine>l Air flow sensor0 Oxygen sensorMalfunction of the engine control system
l
Stepper motor <2.0L DOHC Engine>l Injector0 Power transistor
Check the actuator-related circuit.Check the actuator as a single unit.
Page 465 of 1216
FUEL SYSTEM - Troubleshootina
<2.0LDOHC Engine>
FunctronArr-fuellgnrtronIdleAir con-
FuelFuel
PurgeEGRmixturetimrng
speeddrtronerpump pressureaircontrc
controlcontrol
controlpowerdrivecontrol
control
relaycontrol
Functronal elementscontrol
InPower supplyXXXXXXXXPut(ignrtron switch coupled)
Power supply (battery backup)
Ix Ix Ix lx lx lx lx Ix
Top dead center sensorI xXI
1 Crank angle sensorIxlxIxIxIxI lxlx
Oxygen sensorI x I
Vehrcle speed sensor
Air conditioner switch
XX
XX”XPower steering
011 pressure switchXIDetonation sensor
lgnrtron switch
X
XXX
lgnrtron switch ST terminalXXX
lnhibrtor switch XXX”
)ut-InjectorXutResistor
Idle speed control servoX
Power transistorI 1x1 I I I I I
Arr condrtroner power relay
Control relay
Fuel pressure control valve
Purge control solenord valve
X
X
X
X
EGR control solenoid valve
NOTE*:
Page 466 of 1216
FUEL SYSTEM - Troubleshootinn
MPI CIRCUIT1.8L
Engine
VSIBLE3ST1REI--
IGNITIONSWITCHtIGl)
c-59
12s
m458
j;WKPUMP
:ONNECTOR
IGNITIONCOIL
ISTOR
CRANK ANGLAND TOP DE!iDCENTER SENSOR
\/---DISTRIBUTOR5ASSEMBLY
'pcuc
n
,L)‘E
;
6
b
E-
5
5
08 C-64/1
tci3j4
I21
------
-.Vr
MPICONTROLRELAY
r
I
h
Lkn
39‘---,
i
lsil12
iz;.
c-65a-66
135-AC-U0514-NC
Page 471 of 1216
FUEL SYSTEM - Troubleshooting
INHIBITORSWITCHIGNITIONSWITCHtIGl)MALI:-
JSIBLE
FF- 0
I
;;;bKPUMP
:ONNECTOR
MPICONTROL
RELAY
J
1
3J
3
6
t?N
09----
ca
c:
C-64
c1r
6 C-6508,__-__--____--____-_-------------
KXIS-AC-UOSlSA-NC
Page 515 of 1216
FUEL SYSTEM - MPI System Inspection <1.8L Engine>
outputDiagnosis code
referenceDiagnosis itemCheck item (Remedy)
orderOutput signal patternNo.Memory
7Engine coolantRetainedl Harness and connectortemperature sensor
:-rlrLn- 2’
l Engine coolant temper-
ature sensor
12A0107
8Crank angle sensor
:nn 22
Retainedl Harness and connector
(If harness and connector
are normal, replacedistributor assembly.)
12A0107
9No. 1 cylinder top
dead center sensorH
Lnn 23
Retainedl Harness and connector
(If harness and connector
are normal, replacedistributor assembly.)
12A0107
10Vehicle speed sensor24Retainedl Harness and connector
(reed switch)H
Lu 1 nnJln
l Vehicle speed sensor
(reed switch)
12A0107
11Barometric pressure25Retainedl Harness and connector
sensorH
u I nl-uvln
(If harness and connector
are normal, replace
Lbarometric pressure
12A0107sensor assembly.)
12Ignition timing adjust-36-l Harness and connectorment signalH
LUUI nluvuuL
12R0468
13Injector
:m 41
Retainedl Harness and connector0 Injector coil resistance
12A0105
14Fuel pump42Retainedl Harness and connectorH0 Control relay
LUUUI nn
12A0105
15EGR
H
u u u u-inn
l EGRvalvel EGR valve control sole-Lnoid valve
12A0105l EGR valve control vacuurr
16Normal state---H
Ln
12A0104
NOTEReplace the engine control unit if a malfunction code is output although the inspection reveals that there is no problem with the check
items.
Page 529 of 1216
FUEL SYSTEM - MPI Svstem InsDection <2.0L DOHC Engine>
outputDiagnosis codeIreferenceDragnosrs ItemCheck item (Remedy)orderOutput signal patternNo.Memory
7Crank angle sensor
:nn **
Retainedl Harness and connector
(If harness and connector
are normal, replace crank
angle sensor assembly.)
12A0107
8Top dead center
:- 23
Retainedl Harness and connectorsensor (No.1 and(If harness and connector
No. 4 cylinder)are normal, replace crank
angle sensor assembly.)
12A0107
9Vehicle speed sensor24Retainedl Harness and connector
(reed swatch)H
I u I nlvln
l Vehicle speed sensor
(reed switch)
L12A0107
10Barometnc pressure25Retainedl Harness and connector
sensorH(If harness and connector
are normal, replace
LULllnMllbarometric pressure
12A0107sensor assembly.)
11Detonation sensorRetainedl Harness and connector
:m 31
l Detonation sensor
12R0468
12Injector
:m 41
Retainedl Harness and connector0 Injector coil resistance
12A0105
13Fuel pump42Retainedl Harness and connectorH
UUUI nn
0 Control relay
L12A0105
14EGR
Hl EGR temperature sensor
u u u I nnn
l EGRvalvel EGR valve control sole-Lnoid valve
12A0105l EGR valve control vacuum
15Ignition coil44Retainedl Harness and connectorH
UUUL-llMlL
0 Ignition coil0 Power transistor
L12A0105
16Normal state---H
L
12A0104
NOTEReplace the engine control unit if a malfunction code is output although the inspection reveals that there is no problem with the check
items.
Page 536 of 1216
![MITSUBISHI ECLIPSE 1991 Service Manual 14-82FUEL SYSTEM - MPI System Inspection <2.0L DOHC Engine>
\ \\I \3FUO352
,\ \
\I \3FUO353
,\ ‘\R/
\ \\I \3FUo354
POWER TRANSISTORRefer to GROUP 8
- Ignition System
NlIAcQAl
a-4
AIR CONDITIONER PO](/img/19/57104/w960_57104-535.png "MITSUBISHI ECLIPSE 1991 Service Manual 14-82FUEL SYSTEM - MPI System Inspection <2.0L DOHC Engine>
\ \\I \3FUO352
,\ \
\I \3FUO353
,\ ‘\R/
\ \\I \3FUo354
POWER TRANSISTORRefer to GROUP 8
- Ignition System
NlIAcQAl
a-4
AIR CONDITIONER PO")
14-82FUEL SYSTEM - MPI System Inspection <2.0L DOHC Engine>
\ \\I \3FUO352
,\ \
\I \3FUO353
,\ ‘\R/
\ \\I \3FUo354
POWER TRANSISTORRefer to GROUP 8
- Ignition System
NlIAcQAl
a-4
AIR CONDITIONER POWER RELAYN14NCl.a -Refer to GROUP 24
- Air Conditioner.
PURGE CONTROL SOLENOID VALVEN14RCKARefer to GROUP 25
- Evaporative Emission Control System.
EGR CONTROL SOLENOID VALVE
N14NCURefer to GROUP 25
- Exhaust Gas Recirculation System.
FUEL PRESSURE CONTROL VALVE
NOTEBefore the vacuum hoses are removed, make a mark’on the
-
hose for visual identification so that they can be reconnected in,their original positions.
(1) Remove the vacuum hoses (blue stripes and black) from
the solenoid valve.
(2) Disconnect the harness connector.
(3) Apply vacuum with a hand vacuum pump to the nipple to
which the black vacuum hose was connected and check for
air tightness both when a voltage is applied to the solenoidvalve terminal and when the voltage is removed.
Battery voltageOther nipple of
solenoid valveNormal condition
When voltage
is removed
When voltage
is applied
OpenVacuum leaks
Blocked by fingerVacuum is retained
OpenVacuum is retainedCHECKING
COIL RESISTANCE
Measure the coil resistance with a tester.
Standard resistance: 36
- 46 R [at 20°C (68”F)]