1989 MITSUBISHI GALANT sensor

13-108 FUEL SYSTEM VALVE>- On-Vehicule Inspection of MFI Components
TermrnalNo.
64
__-
53
15
58
59
Check Item
Check engine/
malfunction
Indicator lamp
EGR solenoid
EGR temperature
sensor Idle speed control
motor
(Contraction) Idle speed control
motor
(Expansion)
II
dle speed controlrnotor positions
;ensor
Check
condrtron (Engrne state)
lgnrtron swatch: OFF - ON
lgnrtron swatch: ON
Engine: After warming
up, raprdly press the
accelerator pedal from the rdlrng state.
lgnrtronSensor temperature of 50°C (122°F)swrtch,ONSensor temperature of 100°C (2 12°F)
Ignition swatch:15 seconds have elapsed since the IgnitlOnswitch was turned on.
Ignition switch:Soon after the ignitron switch is turned on.
gnition switch:15 seconds have elapsed since the ignitionswitch was turned on.
Standardvalue
o-3v
9’- 13v(After several
minutes have
elapsed)
B+
It temporarily
drops slightly
from
B+.
3.6-4.4v
2.2- 3.OV 4V or higher
(:emporarily)
o-1v
4V or higher
(:emporarily)
o-
IV
1.2V or higher
A- 1.1v
qemarks
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FUEL SYSTEM - Fuel Tank13-111
03R0297
Vapor hose
mmin.)Fillerhose
i2.l
B
3FOO7
A
1
Flare nut
Skure side
03Yo43
9. CONNECTION OF VAPOR HOSE/8. FILLER HOSE
(1) The vapor hose should be connected all the way at the tank, and approximately 40 mm (1.6 in.) at the fuel tank
filler tube.
(2) The end of the filler hose with the shorter straight pipe
part should be connected at the tank side.
7. CONNECTION OF HIGH PRESSURE HOSE TO FUEL PUMP
Temporarily tighten the flare nut by hand, and then tightenit to the specified torque, being careful that the fuel hose
does not become twisted.
Caution
When tightening flare nut, be careful not to bend or
twist line to prevent damage to fuel pump low connec-
tion.
FUEL PUMP REPLACEMENT
(1) Disconnect the fuel pump connector.
(2) Remove the fuel tank filler tube cap.
(3) Drain the fuel. MllGFAC
(4)
Disconnect the fuel high pressure hose and main pipe.
Caution
Cover the hose connection with rags to prevent splash
of fuel that could be caused by some residual pressure in the
fuel. pipe line.
(5) Loosen the self-locking nuts to the end of the stud bolt.
(6) Disconnect the lateral rod right side body coupling; then lower the lateral rod and use wire or similar material to
suspend from the axle beam.
(7) For models equipped with the ACTIVE-Electronic Control Suspension
(E.C.S.) disconnect the rear height sensor and
the lateral rod. (Refer to GROUP
33B-Service Adjustment
Procedures.)

13-112FUEL SYSTEM VALVE> - Fuel Tank
03L0018
QcD ua .
CFa
cc
0c aa0u0aa
Positioning projection
03L0009
(8) Remove
the fuel pump installation screws and the bolt for
holding the fuel pump (at the lower side of the fuel tank),
and then remove the fuel pump from the fuel tank.
(9) Align the three positioning projections of the packing with the holes in the fuel pump.
(lO)When the fuel pump is installed, the holding bolt at the lower side of the fuel tank should be installed first.
Care should be taken at this time that the O-ring is not
pinched.
(1 l)For models equipped with the ACTIVE-E.C.S., check the operation of the ACTIVE-E.C.S. after installation of the rearheight sensor. (Refer to GROUP
33B-Service AdjustmentPrnrwiI irps II I ““VW-. W.S.,
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13418FUEL SYSTEM (SOHC-16 VALVE> - Specifications
SPECIFICATIONS
GENERAL SPECIFICATIONSMISCA-
Items
Fuel
Tank capacityReturn system
Filter
Fuel pump Type
Driven by
Throttle body Throttle bore
Throttle position sensor Idle air control motor
Closed throttle position switch
IAC valve position sensor
Engine control module Identification model No.
< Federal >

Sensors
Volume air flow sensorBarometric pressure sensor
Intake air temperature sensor
Engine coolant temperature sensor
Oxygen sensor
Vehicle speed sensor
Park/neutral position switch
Camshaft position sensor
Crankshaft position sensor EGR temperature sensor
Power steering pressure switch
Cvctuators
Multiport fuel injection relay type
Injector type and number
Injector identification mark
Evaporative emission purge solenoid
EGR solenoid %el
pressure regulator
Regulated pressure Specifications
60 (15.9)
Equipped
High pressure type
Electrical, in-tank type
Electric motor
mm (in.) 50 (1.969) Variable resistor typeDC motor type DC motor type by-pass air control system with
the Fast Idle Air Valve (FIAV)
Rotary contact type, within throttle position sensor
Hall element type
E2T36281 E2T36280
Karman vortex type
Semiconductor diffusion type
Thermistor type
Thermistor type Zirconia type
Reed switch type
Contact switch type Hall element type
Hall element type
Thermistor type
Contact switch type
Contact switch type
Electromagnetic, 4 MDH240
ON/OFF step solenoid valve Duty cycle type solenoid valve
kPa (psi) 335 (47.6)
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Specifications/Special Tools/FUEL SYSTEM VALVE> - Troubleshooting
SERVICE SPECIFICATIONS
13-119 MlOCB-
Items
Specifications
Basic ignition timing
5”f 2”BTDC at curb idle
Curb idle speed rpm
700-C 100
Idle speed when air conditioning is onvm
>
850 at neutral position
650 at
D range
Basic idle speed rpm
700+50
Throttle position sensor adjusting voltagemV 400-I ,00
0
Throttle position sensor resistance
kQ 3.5-6.
5
Intake air temperature sensor resistance
kQ2.7 [at 20°C (68”F)]
Engine coolant temperature sensor resistancekQ
20°C (68°F)2.4
80°C (176°F) 0.3
Oxygen sensor output voltageV 0.6-1.0
Fuel pressurekPa (psi)
Vacuum hose disconnection
330-350 (47-50) at curb idle
Vacuum hose connection Approx. 270 (38) at curb idle
Injector coil resistance
5213-16 [at 20°C (68”F)]
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TORQUE SPECIFICATIONS
Refer to P.13-6.
SEALANT
Refer to
P.13-7.
SPECIAL TOOLS
Refer to
P.13-7.
MlBDA-B
TROUBLESHOOTING
EXPLANATION OF TROUBLESHOOTING
PROCEDURES
MllEBCC
Refer to P.13-8.
EXPLANATION AND PRECAUTION RELATED
TO HARNESS CHECKING
Refer to P.13-9.

13-120FUEL SYSTEM - Troubleshooting
CHH;K
ENGINE/MALFUNCTION INDICATOR
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
Check engine/malfunctionout. Even if the ignition switch is turned on again, the light doesindicator lamp68A.0093not come on until the irregularity is detected.
Here, immediately after the ignition switch is turn 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
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
Ignition timing adjustment signal
Injector
EGR
Caution
Check engine/malfunction indicator lamp will come on
even when terminal for ignition timing adjustment is short-circuited. Therefore, it is not abnormal that the
light comes on even when terminal for ignition timing
adjustment is short-circuited at the time of ignition tim-
ing adjustment.
CHECK ENGINE/MALFUNCTION INDICATOR LAM
P
INSPECTION
(1) Check to be sure, when the ignition switch is set to the “ON” position, that the lamp illuminates for about five
seconds 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 failedlight bulb.
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FUEL SYSTEM - Troubleshooting13-121
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 15 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
disconnected. In addition, beginning with the engine
control module of
1990 and later models, the diag-
nostic trouble codes are erased by turning on the
ignition switch and sending the diagnostic trouble
code erase signal from the scan tool to the engine
DIAGNOSTIC CHART (FAULT TREE) 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 diagnostic memory will
be erased.
The 15 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.
Caution
The diagnostic trouble code of ignition timing
adjustment signal is outputted when terminal
for ignition timing adjustment is short-cir- cuited. Therefore, it is not abnormal that the
code is outputted even when terminal for igni-
tion timing adjustment is short-circuited at the
time of ignition timing adjustment.
r
No.Output signal pattern
:i1zA0104
11
12
I3
:-J-l-J-12Ao104
Diagnostic trouble code-I
-
On-boarddiagnosticitem
Engine
control moduleCheck item (Remedy)IMemory
(Replace engine control module)-
Oxygensensorl Harness and connectorRetainedl Oxygen sensorl Fuel pressurel Injectors (Replace if defective.)l Intake air leaks
Volume air
l Harness and connectorRetainedflow sensor(If harness and connector are
normal, replace volume air flow
sensor assembly.)
Intake airl Harness and connector Retained
temperaturel Intake air temperature sensorsensor
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13-122FUEL SYSTEM - Troubleshooting
Diagnostic trouble codeOn-board
diagnostic Check item (Remedy) Memory
No.Output signal pattern
item
14Throttlel Harness and connector
Retained
position l Throttle position sensor
:n
sensor l Closed throttle position switch
12Ao104
21Enginel Harness and connector
Retained
coolant l Engine coolant temperature
Cnn
temperature
sensor
sensor
lzAO107
22Crankshaft l Harness and connector
Retained
position (If harness and connector are
:nn
sensor normal, replace distributor
assembly.)
lzAOlO7
23Camshaft l Harness and connector
Retained
position (If harness and connector are
:-
sensor normal, replace distributor
assembly.)
12Ao107
24 Vehiclel Harness and connector
Retained
speed l Vehicle speed sensor (reed
Hsensor (reed
switch)
switch)
LULl-uulnlzAO107
25
H
Barometric
pressure l Harness and connector
(If harness and connector are
LULMlvul
sensor normal, replace barometric
pressure sensor assembly.)
VA0107
Retained
36 Ignition
l Harness and connector
-
timingH
Lu u LnllMnn
adjustment
signal
12Ao107
41Injector l Harness and connector0 Injector coil resistance Retained
12Ao107
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