1989 MITSUBISHI GALANT clutch

FUEL SYSTEM VALVE> - Troubleshootins
CHECK CHART CLASSIFIED BY PROBLEM SYMPTOMS
ProblemsymptomsStartingIdling stability Drivingr”
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cz
iP.13-143
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-
-Sheck items
‘ower
supply
%ginecontrol module power groundI
1 P.13-146
:uel pump
Jolume air flow sensor
B
f
E3
DELI @El
cP.13-162
P.13-165III P.13-167I
1/ P.l3-171 1
P.l3-172
P.l3-173
P.l3-175
P.13-176
P.l3-179
ntake air temperature sensor
BIB
DEI
0
DEl
3El
3
-I
iarometric
pressure sensor
ingine coolant temperature
sensor
‘hrottle position sensor
Iosed throttlepositionswitch
K valve oosition sensor
lamshaft position sensor
i-:rankshaft positionsensorIIlnition
switch-ST I
-I---0lnition switch-ST and park/neutralosition switch
chicle
speed sensor
ower steering pressure switch
ir conditioning switch and/C compressor clutch relayI/I- IIlxygen sensor
@El@ P.l3-181
@ElP.13-184
@[email protected]
Ile air control motor (DC motor)
inition coil and ignition powerOFI@piJOEIansistor
tiaporative emission purge solenoid01 P.13-189
1 Id
kl
c
tr
t
EGR solenoid @El@[email protected]
Fuel pressureOIlI @El8E.l @El @El @[email protected]
0 : Warm engine (number inside indicates check order)
0 : Cold engine (number inside indicates check order)
PROBLEM SYMPTOMS TABLE (FOR YOUR INFOMATION)
Refer to P.13-19.
TSB Revision

FUEL SYSTEM - ?::;:r%t~pection Of MF’13439
ON-VEHICLE INSPECTION OF MFI COMPONENTS
COMPONENT LOCATION
6FUO843
Name Symbol NameSymbol
Air conditioning compressor clutch relay A
Ignition coil (ignition power transistor)
L
Air conditioning switchTIgnition timing adjustment terminalK
Camshaft position sensor and crankshaft posi- InjectorHMtion sensor- Multiport fuel injection relayU
Check engine/malfunction indicator lampS- Oxygen sensorN
Data link connectorQ- Park/Neutral position switch (A/T)6
EGR solenoid I- Power steering pressure switchP
EGR temperature sensor 0
Throttle position sensor (with closed throttle
position switch)
EEngine control modulev
Engine coolant temperature sensorFVehicle speed sensor (reed switch)R
Evaporative emission purge solenoidJVolume air flow sensor (with incorporated,in-
take air temperature sensor and barometncC
Fuel pump check terminalGpressure sensor)
Idle air control motor
D
NOTEThe “Name” column is arranged in alphabetical order. TSB Revision

FUEL SYSTEM - :::,:k:t?=tiion Of MF’13-163
INSPECTION
Using Scan Tool
Function
( Item No.
Data reading
/ 5
5
l-
+
L
Data display
IAC valve
position step
TCheck condition
l Engine coolant tem- perature: 85 to
95°C
(185 to 203’F)l Lights, electric cool- ing fan, accesso-
ries: OFF
l Transaxle: Neutral
(P range for A/T)
l Closed throttle posi-
tion switch: ON
l Engine: At idle
(Compressor clutch
to be operating in case air conditioning
switch is ON) Load state
Air conditioning switch:
OFF
Air conditioning switch:
Turn from OFF to ON l Air conditioning switch: OFF
l Selector lever: Shift to
D range
,,,,,,,,,I
Increase from 3-40 I
step
NfOTE
In a new vehicle [driven approximately 500 km (300 miles) or less], th\
e IAC valve position sometimes exceeds the
standard value by approximately 20 steps.
Caution
When shifting the selector lever to the
D range, apply brake to prevent the vehicle from moving forward.
HARNESS INSPECTION
IIL\-11 r@Harm ” ’ -conna
tA Engine control
-tmodule harnessside rnnnnctor
Check for open circuit, or short-circuit
to ground, between engine control module and
IAC valve position sensor.
l Engine control module connec- tor: Disconnected
l
IAC valve position sensor connec-
tor. Disconnected
21
@Harness sideconnector
0,OK-& 121
i Repair the
--L
harness
(@lcl- El)
/ ml-~) (@pJ
- @I)
Check for continuity of the ground
circuit.
l
IAC valve position sensor connec-
tor: Disconnected

13-176FUEL SYSTEM - ::i$%%-ti=pection Of MF’
1
@ Harnesssrde connector
7FUOSO5
Measure the impressed voltage./\1A
l Power steering pressure switch
connector: Disconnected
l Engine control module connec-
tor: Connected
l Ignition switch: ON
Voltage
04
1 modul
e
J
AIR CONDITIONING SWITCH AND A/C COMPRESSOR CLUTCH RELAY
hl13YRABl
ii++----- ,L’AI:
Air conditionino1 switch -
‘A //A\‘A /,,--.l, ,+q‘\
\\Wj i EYAJ26FUO645
Air conditioning
compresso
r
clutch
relav
~-1 6FUO612
Engine control module connector
Sub fusible link
TSB Revision Air conditioning
1
@ m i”“:F$
1
Engine control module ,
I7FUO653
-
,4,
g:2
[
22
Auto compressorcontrol unit
6
2 Dual pressure
I switch 3N
3N
1
1
Air conditioningOFFengine COOlant,^N temperature
2switch
11

5
6FU145.7
OPERATION
TROUBLESHOOTING HINTS INSPECTION
Using Scan Tool Refer
to P.13-83.

FUEL SYSTEM - i%$-%~pection Of MF’13-193
TerminaNo.
19
52
-rII
i
t
c
65
L
63
64t
I:
I
Check Item :Check Condition (Engrne Condrtron)
Volume air flowj Engine: Idle speedsensor reset signal
1
Engine rpm: 3,000 rpm
Intake air tempera-1Ignition switch: ON When Intake atr temperature IS 0°C (32°F)ture sensor
When intake air temperature IS 20°C (68°F)
i When intake air temperature is 40°C (104°F)
When intake air temperature is 80°C (176°F)
lgnltlon switch: ON’ When altitude is 0 m
When altitude is 1,200 m (3,937 ft.)
Ignition switch: ON
i When engine coolant temperature IS 0°C (32°F)
When engine coolant temperature is 20°C (68°F)
When engine coolant temperature is 40°C (104°F)
Barometnc pressuresensor
Engine coolant
temperature sensor
Throttle positionsensor
67
68
69
51
115
1
1
Ic22
Closed throttle
position switch
Camshaft position
sensor
Crankshaft position
sensor
Ignition switch-ST
Park/neutral position
switch
Vehicle speed sensor
Power steering
pressure switch
Air conditioning
switch
-I
I When engine coolant temperature is 80°C (176°F)
‘I
) 0.3-0.9v
Ignition switch: ON Set throttle valve to idle position.
0.3-0.6V
iFully open throttle valve.1 4.5-5.5v
Ignition switch: ON
Set throttle valve to idle position.o-1v
’ Slightly open throttle valve4V or more
Engine: Cranking0.2-3.OV
Engine: Idle speed
Engine: Cranking0.2-3.OV
Engine: Idle speed
Engine: Cranking8V or more
Ignition switch: ON
( SetselectorlevertoPorN.o-3v
i Set selector lever to D. 2, L or R.8-14V
Ignition switch: ONi 04d5v
Move the vehicle slowly forward.(Changesrepeatedly)
Engine. Idling after warmrng upSteering wheel idle stateB+
During steering wheel operationo-3v
Engine: Idle speed
’ Turn the air conditioning switch OFFo-3vI
’ Turn the air conditioning switch ON.1 B+(Air conditioning compressor is operating)!
Engine: Idle speed1 B+or
Air conditioning switch: OFF-ONI temporarily
Turn the conditioning switch ON. (Air conditioning compressor is operat\
ing) 1
6V or morej 1
1 o-3v
/ Standard
value
/ o-1v
1 6-9V
1 3.2-3.8V
: 2.3-2.9v
1.5-2.1V
i 0.4-I .ov
j 3.7-4.3v
/ 3.2-3.8V
, 3.2-3.8V
1, 2.3-2.9v
1.3-l .9vI
Air conditioningcompressor clutchrelay
TSB Revision1

13-196FUEL SYSTEM - General Information
FUEL SYSTEM
GENERAL INFORMATION
MFI SYSTEM DIAGRAMMl
3BA-A

*1 Injector*2 Ignition coil
(Low-
voltage power-drs-
tribution type)
*3 Idle air control motork4 Evaporative emis-
sion purge solenoid l Fuel pump control (Multiport
fuel injec-
tion relay)
l Air conditioning
corm- pressor clutch relay
* Ignition timing control) On-board diagnostic
output
) Check engine/mal-
function indicator
lamp
Engine coolant tem-
perature sensor
l Ignition swatch STl Power supplyl Vehicle-speed sen-sor
. Arr conditioning
switch
l Power steering
pressure
swatch
‘I Heated oxygen sensor ‘10*2
Volume air flow sensor *3

Intake air temperaturesensor‘4 Throttle position sensor *5
Closed throttle position
swrtch *6
Camshaft position sen-
sor “7
Crankshaft position sen-
sor“8 Barometrrc pressure
sensor
‘9 Engine coolant temper-ature switch (for cooler
cut-off)
Evaporatrveemrssion canister
Evaporatrveemlsslo”Idle airThronlecontrol motorl 3 Fast idle air valveI (Wax tvoe)position\Volume air/sensor3flow sensorf \//n,r\l 2 '8
- lnnhnn toll III1 II
II-“,--?% 11 11 EGR,/alveI.l”lll)i
Fuel injectorII
II
Vacuum hose color
G: Green
L: Light blue
I?: RedY: Yellow5: Black
Heated oxygen sensor Thermal
vacuu
a uCatalytrc converter
HMO163PCV: Positive CrankcaseVentilation
TSB Revision

‘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 Dosltion sen-
so
r
*7 Crankshaft position sen-sor‘8
Barometnc
pressure
sensor
‘9 Engine coolant temper-
ature switch (for cooler
cut-off)
‘I 0 Knock sensor ‘11
Engien coolant tem-
perature sensor
l Ignition switch STl Power supplyl Vehicle-speed sen-
sor
l Air conditioningswitchl Power steeringpressure switch
Volume airflow sensor \
Idle air
FUEL SYSTEM - General Information13-197
* 1 Injector*2 Ignition coil (Low-
voltage power-dis-
tribution type)
*3 Idle air control motel*4 Evaporative emis-sion purge solenoid
l Fuel pump control (Multiport
fuel injec-
tion relay)
l Air conditioning com-pressor clutch relay
l Ignition timing control
l On-board diagnosticoutputl Check engine/mal-
function indicator
lamp
Evaporativeemissioncanister
Q
ThrottlepOSltlOnSt?“SW
\
control motor
r
Fast Idle air valveWax tape)
TSB Revision
e , lylllll”rl
COll
Fuel- wmpEGR valve
'1 A
Heated oxygen sensor /$$y/.\‘“I
w ‘11 Englen coolant temp. sensorF ‘9 Engine coolant temp. switch
Thermal vacuum valve
Crankshaft
position
sensor
‘7 positlon ICrankshaft
sensor
I
Camshaft‘6 positionsensor
Vacuum hose color G: Green
L: Light blueR: RedY: YellowB: Black
Catalytic convener
PCV: Posmve CrankcaseVentllatlon6EMO362

13-198FUEL SYSTEM - General information

*I Heated oxygen sensor *IO
EGR temperature sen-*2 Volume air flow sensor
sor‘3 Intake air temperature
*I 1Engien coolant tem-sensor
perature sensor‘4 Throttle position sensor . Ignition switch ST*5 Closed throttle position
l Power supply
switch l Vehicle-speed sen-
‘6 Camshaft
posltion
sen- sor
sor l Air conditioning“7 Crankshaft positron sen-
switch
SOT0 Power steering‘8 Barometric pressure pressure switch
sensor
‘9 Engine coolant
temper-
ature switch (for cooler
cut-off)
*l Injector*2 Ignition coil (Low-
voltage
power-dis-
tribution type)
*3 idle air control mot01*4 Evaporative emis- sion purge solenoid
*5 EGR solenoid
) Fuel pump control
(Multiport
fuel injec-
tion relay)
I Air conditioning com- pressor clutch relay I Ignition timing control
) On-board diagnostic
output
) Check enginejmal-
function indicator
lamp
Evaporativeemissioncanister
Volume air
flow sensorA..\
II
oressure db,Fun, taw”l”‘“‘~
Heated 0~““~” le
ax valve
e”SOrgme coolant temp.
Vacuum hose color
G: Green
L: Light blueR: RedY: YellowR. Rlnrk
Catalytic converter 6FU1596
PCV:
Positive Crankcase
Ventilation
TSB Revision