relay MITSUBISHI GALANT 1989 Service Manual PDF

FUEL SYSTEM - Troubleshooting
13-221
AY!&&ROLUNITMFIRELAY
$1r 1.25-R a
Y
z
VOLUME AIR FLOW SENSORI s
:CRANKSHAFT
POSITION
ZEWM;;ON
I\
A-47IYIAKC AIR VDLUIO!.ZCYPLRA’T”RE AIR ?LW
IEI
BCYBOR BLR8OR1es166
Ly,34
a
I
2-----1,21t%TROL UNIT
0SV5V
A-57
OXYGEN SENSORCHECK CONAIECTOR
KX35-AC-HOWA-NY
TSB Revision

FUEL SYSTEM - Troubleshooting
13-223
JE
I
MFIRELAY
A-40
IEEl
$92
B
EGHS@LENOID(VHEICLES FORCALIFORNIA)
0365
1Y I1 BATTERY BACK UP j
@2
1 FUSIBLE LIN
'6
A-07X r
>c
DUAL
DmREA-21 OF;-
@i
AUTO COMPRESSOR;ONTROG UNIT
12 c-23
2
m
1
I$$;i?~pP”lIFJ;WPkP.a
ON:2100kPe(29QPS 1)IIOFF:2700kPaf384PS I)
1
'A-06
ENGINE COOLANT
IMAGNETIC CLUTCH
MFI CONTROL UNIT'
KX35-AC-HOSeBE-NY
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13-226
FUEL SYSTEM - Troubleshooting
CIRCUIT DIAGRAM (CONTINUED)
< 1990 models (Non-turbo)>
MFIRELAY0
vD:
a
I
z s1.25-R10
mVOLUME AIR FLOW SENSOR",,2
lNT.RP AIR
VOLUYLTLYPRRIWRl AIR ?LWP.L”SDP BUISOR
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s
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A-47
A-57
22I:------21!&TROL UNIT
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m
II I
I
!
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I
I e
L
OXYGEN SENSORCH,ECK CONNECTOR
KX35-AC-HOS3Sb-NM
TSB Revision
1

13-228FUEL SYSTEM - Troubleshooting
CIRCUIT DIAGRAM (CONTINUED)
< 1990 models (Non-turbo)>
&A-07-2X
lizi
E
1934 c-37-1
J/B
MFIRELAY
v
L
c-39
If
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A-48
@jlM-!EICLES FOF?CALIFORNIA
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c-10
9.
FUSIBLE LIN
K
IOD
OR ETORAGE
CONNECTOR
AUTO COMPRESSOR
CONTROL UNIT
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s
-I
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B-22
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103
YY I
MFI CONTROL UNIT
tmfci2
KX35-AC-ti05358-NY
MT
‘C
CLUTCH
TSB Revision

13-236FUEL SYSTEM - Troubleshooting
CIRCUIT DIAGRAM (CONTINUED)

MFIRELAY
9c
z
s1.25-RT0r
IKTA‘E AIR VDLUYEEWEPATMBAIn ?LovEJEYBOR 8ElBORAND
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UNIT
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2 1
h--+-PC
KNOCK
SENSOR
B-04-1
I-
B-20 -OXYGEN GENSORw :
CHECK CONNECTOR
TSB Revision

13-238FUEL SYSTEM - Troubleshooting
CIRCUIT DIAGRAM (CONTINUED)
FUSIBLE LINFsv
kJT0 COMPRESSORCONTROL UNIT
c-30 E
A-07-2X
$-231
IOD OR
~6oNFIK%OF
I
3
L2Ei
E
,234 C-37-l
J/B
MFIRELAY
Bkc-39
6A-07X
Els4
A-48
mA-08
I
AIRCONDITIONING
ENGINE COOLANT
g rfIi EFiTURE
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IB-22 I
103t%d, 1.
E
a 53c-10
V
B-05I J--
I
IMAGNETIC CLUTCH
MFI CONTROL UNITKX35-AC-HO53QB-NY
TSB Revision

FUEL SYSTEM - Troubleshooting
13-243
A-48
IEEl
Sl-
c-37-3,:
l&l
lx
1e34
MFIRELAYJ/Br
1
1
x
BSLHENOI D(VHEICLES FORCALIFORNIA)
2
&
53c-10
-
103
, BAWL”‘,
E2-J
G
I FUSIBLE LINb
C
0
10A
4A-07-2X
1
liizEa1234
IOD ORGTORAGE3CONNECTOR
2
1
2
AUTO COMPRESSOR
CONTROL UNIT
OF? N
i
!
%
#j;;y;,
(3OPSl)
0N:ZlOOhPa(29DPSi)OFF:2’i’OOkPa(384PS I)
I
[
MAGNET1 C CLUTCH
3
lh
B-05
Elle.3
=
MFI CONTROL UNIT
TSB Revision

FUEL SYSTEM -On-Vehicle Inspection of MFI Components13-251
ON VEHICLE INSPECTION OF MFI COMPONENTS
COMPONENT LOCATION
4 QCiW41QQWPQWQ
I l-+-Y8’
-,..I- - IIII\< I IJ I
/ \lI/--Gl/
El q
I &
q
‘\
P P
6EM0166
MIBYA-A
6FUO843
NameSymbol
NameSymbol
Air conditioning compressor clutch relayKidle air control motor (stepper motor)C
Air conditioning switch0Ignition coil (ignition power transistor)G
Closed throttle position switch (fixed SAS)EIgnition timing adjustment terminalR
Crankshaft position sensor and camshaft posi-HInjectorJtion sensor- Knock sensorYData link connectorS~Multiport
fuel injection relayNEngine control moduleQ-Park/neutral position switch vEngine coolant temperature sensorF-Power steering pressure switchUEGR solenoidL- Throttle position sensorDEGR temperature sensorM-Turbocharger waste gate solenoidXEvaporative emission purge solenoidI~ Vehicle speed sensor (reed switch)PFuel pressure solenoidwVolume air flow sensor (incorporating intakeFuel pump check terminalTair temperature sensor and barometric pres-B- sure sensor)
Heated
oxygen sensorIA I-
NOTE
The “Name” column is arranged in alphabetical order.II TSB
RevisionI

FUEL SYSTEM - On-Vehicle Inspection of MFI Components13-255
COMPONENTS INSPECTION PROCEDURE-
Using Scan ToolMlsYsAGa
Refer to P.13-41.
POWER SUPPLY AND IGNITION SWITCH-IG
zT=f?Qjkeinjection relay
contrc! qcdule ,6A04,,-
----_OFF/ (IN
t5
’ i
4
-
‘OWE;uppl-
Ignition switch [IG,]
Component
side
connect<
763 66.----
1 6FU1331, )r
Ml3YcAB
Harness
@ side connector
01 LO838
OPERATION
l While the ignition switch is ON, battery power
supply is supplied to the engine control module,
injectors, volume air flow sensor, etc.
l When the ignition switch is switched ON, cur-
rent flows from the ignition switch, via the mul-
tiport
fuel injection relay coil to ground.
INSPECTION
Using Scan tool As a result, the
multiport fuel injection relay
switch is switched ON, and power is supplied,
by way of the multiport fuel injection relay
switch, from the battery to the engine control
module.
Function
Data reading Item No.
Data display Check conditionsStandard value
16
Engine control module power- Ignition switch: O
N
Battery positive voltage
supply voltage
TSB Revision I

HARNESS INSPECTION
Engine control
module harness
1-OlLO421
Measure the ignition switch terminal
input voltage.
. Engine control module connector:
Disconnected. Ignition swatch: ON
13-256FUEL SYSTEM -On-Vehicle Inspection of MFI Components
Repair theharness.
(Ignition
switch -
Ilrol) @ Harness side
connector
Measure the power supply voltage ofthe multioort fuel iniection relav.
. Connector: Disconnected
Voltage (V)
IBattery positive voltageI
Repair theharness.
(Batter-y-
@@I)
connector
Engine controlmodule harnessCheck for an open-circuit, or a short-circuit to ground, between the engine
control module and the multiport fuelinjection relay.
. Engine control module connec-tor: Disconnected. Multiport fuel injection relay con-nectar: DisconnectedRepair theharness. 7FUO467
alJ*:
k!ii
054 3 2

-
109
9 7 6 Engine control
module
harnessside connector
@ Harness sideconnector
Check for an open-circuit, or a short-circuit to ground, between the engine
control module and the multiport fuelinjection relay.
.
Multiport fuel injection relay con-nector: Disconnected
@--A
. Engine control module connec-tor: Disconnected Repair the-+ harness.
@@I~ El-@?J. 11071)
TSB Revision