MITSUBISHI GALANT 1989 Service Repair Manual

FUEL SYSTEM - General Information

*1 Heated oxygen sensor *2 Volume air flow sensor
‘3 Intake air temperature
sensor *4
Throttle position sensor
‘5 Closed throttle position
switch *6 Camshaft position sen-
sor
‘7 Crankshaft position sen- sor
‘8 Barometric pressure
sensor
‘9 Engine coolant temper-ature switch (for cooler
cut-off)
Volume air
‘10 Knock sensor
‘11 EGR temperature sen
sor‘12 Engien coolant tem- perature sensor
l Ignition switch STl Power supplyl Vehicle-speed sen-sorl Air conditioningswitchl Power steeringpressure switch
3
Throttleposition
sensor
IIntake air.‘3Fueltemp. sensorpressure *2-regulatorA-
-
.
cd
’
*l Injectorl Fuel pump control*2 Ignition coil (Low- (Multiport
fuel injec-voltage power-dis-
tion relay)
tribution type)
*3 Idle air control motorl Air conditioning com-
l 4 Evaporative emis- pressor clutch relaysion purge solenoidl Ignition timing control
t5 EGR solenoidl On-board diagnosticoutputl Check engine/mal-function indicatorlamp
Idle
aircontrol motorI Wax

wei
I
I
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Evaporativeemission
canister
Heared oxygen
It=
‘12 Engine coolant temp.sensor-‘I u
‘9 Engine coolant temp switch\
l 10 Knock sensor
EGR temperature
Crankshaftposltlon
EGR‘solenoid Vacuum hose colorG: GreenL: Light blue
R: RedY: Yellow
B: Black
Catalfllc converter
PCV: Positive Crankcase Ventilation

13-200FUEL SYSTEM - General Information
>
*l Heated oxygen sensor‘2 Volume air flow sensor*3 Intake air temperaturesensor‘4 Throttle position sensor‘5 Closed throttle positionswitch
*6
Camshaft posrtion sen-
sor
‘7 Crankshaft posrtion sen-
sor
‘8 Barometric pressuresensor “9
Engrne coolant temper-
ature swatch (for coolercut-off)
‘10 Knock sensor‘1 1Engien coolant
tem-perature sensorl lgnitton switch STl Power supplyl Vehicle-speed sen-sor. Arr conditioning
switch
l Power steeringpressure switch
Volume arrflow sensor
l 6
* 1 Injector. Fuel pump Control*2 Ignition coil (Low-(Multiport fuel injec-
voltage power-dis-tion relay)
tribution type) l Air conditioning com-
*3 Idle air control motor
pressor
clutch relay*4 Evaporative emis-
. Ignition timing control
sion purge solenoid l On-board diagnostic
*5 Fuel pressure sole-outputnoid. Check enginelmal-*6 Turbocharger wastegate solenoidf;r$ion indicator
EVAP canisterA
Throttle
9 Engine coolant temp. switch
Thermal VaCUUm valve
b;~ype; waste e-5 /I\- I”-
Catalyw converter
Vacuum hose color
G: Green
L: Light blue
R: RedY: Yellow
B: Black
W:
White
6FU1597
PCV: Positive CrankcaseVentilationFIAV Fast Idle Air Valve
I
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FUEL SYSTEM -General Information/Specifications 13-201

I-
‘1 Heated oxygen sensor
‘2 Volume air flow sensor‘3 Intake arr temperature
sensor
‘4 Throttle position sensor
“5 Closed throttle position
switch
‘6 Camshaft position sen-
sor‘7 Crankshaft positron sen-sor‘8 Barometric pressure
sensor
‘9
Engrne coolant temper-
ature switch (for cooler
cut-off)
ArrInlet
lntaltern1
Volume airflow sensor
‘IO Knock sensor
‘11 EGR temperature sen- sor
‘12 Engien coolant tem- perature sensor
l Ignition switch ST
l Power supply
l Vehicle-speed sen- sor
l Air conditroningswitch
l Power steering pressure
swatch
Throttle
Charge air cooler posmon
sensor\\
*I Injector*2 Ignition coil (Low-
voltage power-dis-
tribution type)
*3 Idle air control moto*4 Evaporative emis- sion purge solenoid
*5 EGR solenoid*6 Fuel pressure sole-noid*7 Turbocharger waste
gate solenoid l Fuel pump control
(Multiport fuel injec-
tion relay)
l Air conditioning com- pressor clutch relay
l Ignition timing control
l On-board diaanostic
output
-l Check enginelmal-
function indicator
lamp
EVAxniy
&0
rurge controll 3ld,le,~ir control motor valve
,n/Evaporatrveemrssron
\tcln-^- temp. sensor
,Ir I-, . -,
sensor
7 ’ <‘I+c 1 Camshaft
Crankshaft1p”3111”I I
position sensorsensor
it
temp SWl,Ch\ -Vacuum hose color
t
WV:0 Knock sensor$bgha;ge;zte //
Catalyuc converter
G: Green
L: Light blue
R: RedY: Yellow
B: Black
PCV: Positive Crankcase
VentilationW: White
FIAV: Fast Idle Air Valve6FU1598
SPECIFICATIONS
GENERAL SPECIFICATIONSM13CA-A
Items
Fuel
Tank capacity


Return system
Filter
Fuel pump Type
Driven by Specifications
dm3 (gal.)
60 (15.9)
62 (16.4)
Equipped
High pressure type
Electrical, in-tank type
Electric motor
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13-202FUEL SYSTEM - SpecificationsItems
Throttle body Throttle bore
Throttle position sensor idle
air control motor
Closed throttle position switch
Engine control module Identification model No.

Specifications
mm (in.) 60 (2.362) Variable resistor type
Stepper motor type The stepper motor type by-pass air COntrOl
system with the Fast
Idle Air Valve (FIAV)
Contact switch type E2T33375:
FWD”,

E2T36 17 1: FWD’2E2T36 18 1: FWD.3, E2T37372: FWDe4 E2137380:
FWDa5E2T36 178: AWD-Non-Turbo’2 E2T37374:
AWD-Non-Turboe4 E2T37382:
AWD-Non-Turbo*5 E2T37378:
AWD-Turbo’4 E2T33373:
FWD”.

E2T36175: FWDe2E2T36 180: FWD’3, E2T3737 1: FWDa4 E2T37379:
FWD’SE2T36 177: AWD-Non-Turbo’2 E2T37373:
AWD-Non-Turbo’4 E2T37381:
AWD-Non-Turbo’5 E2T37377:
AWD-Turbo*4
Sensors
Volume air flow sensor Karman vortex type
Barometric pressure sensor Semiconductor diffusion-type
Intake air temperature sensor
Thermistor type
Engine coolant temperature sensor Thermistor type
Heated oxygen sensor Zirconia sensor
Vehicle-speed sensor Reed switch type
Knock sensor Piezoelectric device type
Camshaft position sensor Photo interrupter type
Crankshaft position sensor Photo interrupter type
EGR temperature sensor Thermistor type
Power steering pressure switch Contact switch type
Actuators
Multiport fuel injection relay type Contact switch type
Injector type and number Electromagnetic, 4
Injector identification mark B240H:
Non-Turbo*1**2.*3
N240H:
Non-Turbo*4,*5B450L: Turbo*4**5
Evaporative emission purge solenoid ON/OFF type solenoid valve
EGR solenoid Duty cycle type solenoid valve
Fuel pressure solenoid ON/OFF type solenoid valve
Turbocharger waste gate solenoid ON/OFF type solenoid valve
Fuel pressure regulator Regulated pressure
kPa (psi)
335 (47.6)
255 (36.3)
NOTEl l: <1989 models>, l 2: <1990 models>, ‘3: <1990.5 models>,l 4:
<1991 models>, l 5:
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FUEL SYSTEM - Specifications13-203
iERVlCE SPECIFICATIONS
Items
Basic ignition timing
Curb idle speed rpm
Idling rpm when air conditioning ON
vm


Basic idle speedrm
Throttle position sensor adjustment voltageV
Throttle position sensor resistance kQ
Idle air control motor (stepper motor) coil resistance a
Intake air temperature sensor resistance kQ
Engine coolant temperature sensor resistance
kS2
20°C (68°F)
80°C (176°F)
Fuel pressurekPa (psi)
Vacuum hose disconnection

Vacuum hose connection

Injector coil resistance a


Qel hose insertion distance mm (in.)
TORQUE SPECIFICATIONS
Ml3CGA
m13caA
Specifications
5”
f 2”BTDC at curb idle
750
+ 100: Non-Turbo800? 100: Turbo
850 at neutral position 700 at
D range
750 & 50:Non-Turbo800 + 50:Turbo
0.48-0.52 at curb idle
3.5-6.5
28-33 [at
20°C (68”F)l
2.7 [at 20°C (68”F)j
2.5
0.3
330-350 (47-50) at curb idle
250-270 (36-38) at curb idle
Approx. 270 (38) at curb idle Approx. 190 (27) at curb idle
13-16 [at
20°C (68”F)]
2-3 [at 20°C (68”F)]
25-30 (1 .o- 1.2)
Items
Heated sensor oxygen
Engine coolant temperature sensor
Throttle position sensor attaching screws
Idle air control motor attaching screws
Fuel rail mounting bolts
High-pressure fuel hose to fuel rail
Fuel pressure regulator to fuel rail
Throttle body mounting bolts and nuts
Accelerator cable adjusting bolts Fuel tank drain plugElectrical fuel pump
Fuel tank mounting bolt
Fuel unit mounting screw
s
gaugeHigh pressure hose to electrical fuel pump
High pressure hose to fuel main pipe
Fuel main pipe to fuel filter
Eye bolt
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ft.lbs.
40-5030-36
20-4015-29
1.5-2.51.1-1.8
2.5-4.5
1.8-3.3
IO-137-
9
4-6 3-4
8-106-
7
15-22
11-6
4-
6
3-4
17-26 12-19
1-2.7-1.4
21-3115-22
2-
3
1.4-2.2
30-4022-29
30-4022-29
30-4022-29
25-3
5
18-25

13-204FUEL SYSTEM -Specifications/Special Tools
Items
Fuel filter mounting bolts
Fuel pipes

clip attaching bolt
Nmft.lbs.
9-1
4
7-10
9-1

4
7-10
SEALANTMlJCE-A
IItems1 Specified sealantI
Engine coolant temperature sensor threaded portion
Fuel tank hole cover

3M
NUT locking No.4171 or equivalent
3M
ART Part No.8626
or 3M
Adhesive EC-5310 or
equivalent
SPECIAL TOOLS
MlBDA-A
NameI IISP OPTIONAL:
AVAI
(For the number, refer to GROUP
OO-Precautions before service.
NOTE *I: , ‘2:
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FUEL SYSTEM - Troubleshootina13-205
Check engine/malfunctionindicator lamp6w.0093
TROUBLESHOOTINGM13EBADa
EXPLANATION O

F
PROCEDURES
Refer to P.13-8.
TROUBLESHOOTING
EXPLANATION AND PRECAUTION RELATED
TO HARNESS CHECKING
Refer to
P.13-9.
ft&;K ENGINE/MALFUNCTION INDICATO
R
Among the on-board diagnostic items, a check engine/mal-
function indicator lamp comes on to notify the driver of the
emission control items when an irregurality is detected. However, when an irregular signal returns to normal and the
engine control module judges that it has returned to normal,
the check engine/malfunction indicator lamp goes out. Moreover, when the ignition switch is turned off, the light goes
out. Even if the ignition switch is turned on again, the light does
not come on until the irregularity is detected. Here, immediately after the ignition switch is turned on, the
check engine/malfunction indicator lamp is lit for 5 seconds to
indicate that the check engine/malfunction indicator lamp op-
erates normally.
ITEMS INDICATED BY THE CHECK ENGINE/
MALFUNCTION INDICATOR LAMP
Engine control module
Heated oxygen sensor
Volume air flow sensor
Intake air temperature sensor
Throttle position sensor
Engine coolant temperature sensor
Crankshaft position sensor
Camshaft position sensor
Barometric pressure sensor
Knock sensor
Injector
Fuel pump
EGR
Ignition coil, Ignition power transistor unit
CHECK ENGINE/MALFUNCTION INDICATOR LAMP INSPECTION
(1) Check to be sure, when the ignition switch is set to the “ON” position, that the lamp illuminates for about five sec-
onds and then switches OFF.
(2) If the lamp does not illuminate, check for damage or dis-
connection of the harness, or for a blown fuse or a failed
light bulb.
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13-206FUEL SYSTEM - Troubleshooting
ON-BOARD DIAGNOSTIC
The engine control module monitors the input/out- put signals (some signals at all times and the others
under specified conditions) of the engine control
module.
When it is noticed that an irregularity has continued
for a specified time or longer from when the irregu- lar signal is initially monitored, passing a certain
number, the engine control module judges that an
irregularity has occurred, memorizes the diagnostic
trouble code, and outputs the signal to the on-board diagnostic output terminal.
There are 16 on-board diagnostic items, including
the normal state, and the diagnostic results can be read out with a voltmeter or scan tool.
Moreover, since memorization of the diagnostic
trouble codes is backed up directly by the battery,
the diagnostic results are memorized even if the ig- nition key is turned off. The diagnostic trouble
codes will, however, be erased when the battery
terminal or the engine control module connector is
DIAGNOSTIC CHART (FAULT TREE) disconnected. In addition, beginning with the engine
control module of 1990 and later models, the diag- nostic trouble code are erased by turning on the ig-
nition switch and sending the diagnostic trouble
code erase signal from the scan tool to the engine
control module.
Caution If the sensor connector is disconnected with
the ignition switch turned on, the diagnostic
trouble code is memorized. In this case, send
the diagnostic trouble code erase signal from
the scan tool to the engine control module or disconnect the battery terminal
(-) for 10 sec-
onds or more, and the diagnosis memory will be erased.
The 16 on-board diagnostic items are provided as
follows, and if plural items are activated, they are all indicated sequentially from the smallest code num-
ber. ti0.
Diagnostic trouble code
Output signal pattern
On-boarddiagnostic
itemCheck item (Remedy)
-Engine (Replace engine control module)
control
H Imodule
L-
J
12A0104
Heatedoxygen
sensor
l Harness and connectorl Heated oxygen sensorl Fuel pressurel Injectors (Replace if defective.) 12A0104l Intake air leaks
12
13 12A0104Volume airl Harness and connector
flow sensor(If harness and connector are
normal, replace volume air flow
sensor assembly.)
Intake air
l Harness and connector
temperaturel intake air temperature sensorsensor 12A0104
Memory
Retained
Retained
Retained
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FUEL SYSTEM - Troubleshooting
No.
14
Diagnostic trouble code On-board
Output signal pattern diagnostic
item Check item (Remedy)
Memory
Throttle l Harness and connector Retained
:-
position
l Throttle position sensor
sensor l Closed throttle position switch
12A0104
21Engine
l Harness and connector Retained
:nn
coolant
l Engine coolant temperature
temperature sensor
sensor 12A0107
22Crankshaft
l Harness and connector Retained
:nn
position
(If harness and connector are
sensor normal, replace crankshaft
position assembly.) 12A0107
23Camshaft
position
sensor l Harness and connector
(If harness and connector are
normal, replace crankshaft
position assembly.) Retained 12A0107
I
24
25Vehicle l Harness and connector Retained
Hspeed
sensor (reedl Vehicle speed sensor (reed
Lswitch)
switch)
12A0107-.
Barometric
l Harness and connector Retained
H
ULJuuuvl
pressure
(If harness and connector are
sensor normal, replace barometric
Lpressure sensor assembly.) 12A0107
31Knockl Harness and connector
Retained
:-
sensor
Non-Turbo normal, replace knock sensor.)
12RO468from 1992
models>
Injector l .Harness and connector
l Injector coil resistance Retained
12AO105I
12Fuel pump
l Harness and connector Retained
Hl Multiport fuel injection relay
Luuul I-Ill
12AO105I
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13-208FUEL SYSTEM - Troubleshooting
No.
43
Diagnostic trouble codeOn-board
diagnostic Check item (Remedy) Memory
Output signal pattern item
EGRl Harness and connector Retained
H II u u Llvln
nia>l EGR valve
l EGR solenoid
L 12A0105
l EGR valve control vacuum
44 Ignition coil,
l Harness and connector Retained
Hl Ignition coil
LUUULnl-lM-
Ignition
power l Ignition power transistor
transistor 12A0105
unit
-Normal --
stateH
Lnm 12A0104
NOTEReplace the engine control module if a diagnostic trouble code is output\
although the inspection reveals that there is no
problem with the check items.
TROUBLESHOOTING TABLE
NOTE
* : The failsafe/back-up function is in operation.
Diagnostic On-boardtroublediagnosticcode No.itemDiagnostic content
Major causeRemarks (trouble
phenomenon, etc.)
-EngineThe engine control module-l Engine stop
control itself is abnormal. l Impossible start
module
11Heated Though the air/fuel mixture (1) The heated oxygen sensor is l Deterioration of
oxygen ratio closed loop control is
troubled.exhaust gas
sensor operated, the signal voltage of
(2) Open-circuit, short-circuit or purifying
the heated oxygen sensor improper connector contactperformance*
does not vary (to be lean/rich). occurs in the heated oxygen
sensor circuit.
(3) The fuel pressure is improper. l Deterioration of
(4) The injector is troubled. exhaust gas
(5) Air is sucked through the purifying
gasket clearance, etc. performance*
(6) The engine control module is l Abnormal start
troubled. l Unstable idling
l Abnormal acceleration
12;zc$rne air Though the engine is running,
(1) Volume air flow sensor is l Abnormal
the signal
frequency of the
troubled. acceleration*
sensor volume air flow sensor is
(2) Open-circuit, short-circuit or l Improper idling
1 OHz or less.
improper connector contact revolution speed*
occurs in the volume air flow l Unstable idling*
sensor circuit.
(3) The engine control module is troubled.
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