engine MITSUBISHI GALANT 1989 Service Repair Manual

FUEL SYSTEM - Fuel Line and Vapor Line 13-325
Mounting
bolts 03F008
I--l03FOO7Standard value: 20-25 mm (8-1.0 in.)
t&-----Eye bolt
Gasket
Fuel filter
#-----
Flare nut
;y;; main ------A\
J
I
-.
High-presfuel hose
J-ring

O”
SERVICE POINTS OF REMOVALMlSKBAMl
1. REMOVAL OF EYE BOLT
Remove the eye bolt while holding the fuel filter nut
securely.
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.
3. REMOVAL OF FUEL FILTER (1) Loosen the main pipe flare nut while holding the fuelfilter nut securely.
(2) Remove the fuel filter mounting bolts, and then remove the fuel filter from the bracket.
INSPECTIONMlOKCABl
l Check the hose and pipes for cracks, bend, deformationand clogging.
lCheck the evaporative emission canister for clogging.
l Check the fuel filter for clogging and damage.
SERVICE POINTS OF INSTALLATIONMlJKDAPl
6. INSTALLATION OF FUEL VAPOR HOSE/4. FUEL RE-
TURN HOSE
(1) If the fuel pipe has a stepped part, connect the fuel
hose to the pipe securely, up to the stepped part, as
shown in the figure.
(2) If the fuel pipe does not have a stepped part, connect the fuel hose to the pipe securely, so that it is the
standard value.
3. INSTALLATION OF FUEL FILTER (1) When installing the fuel filter, first temporarily install thefilter to the filter bracket; then insert the main pipe at
the connector part of the filter, and manually screw in
the main pipe’s flare nut.
(2) Holding the fuel filter nut, tighten the fuel main pipe’s
flare nut and eye bolt at the specified torque. Then
tighten the filter to the bracket.
TSB Revision 2. INSTALLATION OF HIGH PRESSURE FUEL HOSE
Apply engine oil to the hose union.
Insert the hose, being careful not to damage the O-ring, and
tighten securely.
Caution
Because there is high pressure applied between the
fuel pump and the injection mixer, be especially sure
that there is no fuel leakage in this area.

13-328ENGINE CONTROL - Specifications/Troubleshooting
ENGINE CONTROL
SPECIFICATIONS
SERVICE SPECIFICATIONSM13CB-B
ItemsSpecifications
Standard value
Accelerator cable playmm (in.)
1-2 (.04-,081
3-5 (.12-,201
Accelerator switch switching point
mm (in.)4-8 (.16-,311
TORQUE SPECIFICATIONSMlBCC--B
Items
Accelerator arm bracket to body
Throttle body side inner cable to intake manifold plenum
Accelerator arm side inner cable to body
Nmft.lbs.
8-12 6-
9
4-6 3-4
4-6 3-4
SEALANT
MlOCE--B
Items
Accelerator arm bracket Specified sealant 3M ATD Part No.8663 or equivalent
TROUBLESHOOTING
ACCELERATOR CABLE AND ACCELERATOR PEDAL
MlBEGAB
Symptom
Throttle valve will not fully open or close Probable cause
Remedy
Misadjusted accelerator cable
Adjust
Misadjusted automatic speed-control cable Adjust
Broken return
sprinqReplace
Accelerator pedal
operation not smooth (over acceleration)
Throttle lever malfunction
Accelerator pedal wrongly tightened
Misinstalled accelerator cable
Accelerator cable requires lubrication Replace
Repair
Repair
Lubricate or replace
TSB RevisionI

ENGINE CONTROL - Service Adjustment Procedures13-329
SERVICE ADJUSTMENT PROCEDW,E,t&
ACCELERATOR CABLE INSPECTION AND
ADJUSTMENT
For models equipped with the auto-cruise control system, refer
to P. 13-398.
(1) Confirm there are no sharp bends in accelerator cable.
(2) On models with an SOHC engine, turn the ignition switch to the ON position (without starting the engine) and leave
in that condition for approximately 15 seconds.
(3) Loosen the adjusting bolts on the intake manifold plenum, and then secure the outer cable so that the free play of theinner cable will be the standard value.
Standard value:
>
1 - 2 mm (.04- .08
in.)
-a/T>3-5 mm (.12-.20 in.)
NOTE
If there is excessrve play of the accelerator cable, the
vehicle speed drop (“undershoot”) when climbing a slope will
be large.
If there is no play (excessive tension) of the accelerator
cable, the idling speed will increase.
(4) After adjusting, confirm that throttle valve fully opens and closes by operating pedal.
(5) Adjust accelerator cable play and confirm throttle lever
stopper touches the closed throttle position switch.
Stopper\CTP switch03AO278
A
.-\\‘\.\ ‘\
!4
:l/.\\ \\‘\ I\*\\”
j 07R0024
ACCELERATOR SWITCH INSPECTION AND
ADJUSTMENTM13FTBBa
(1) After warning up the engine, check to be sure that theaccelerator switch is ON when the accelerator pedal is in
the free condition. If there is a malfunction, adjust by using
the adjusting bolt.
(2) Press the accelerator pedal by hand until the accelerator switch switches from ON to OFF and confirm that the
amount of pedal movement (A in the figure) is within the
standard value range.
Standard value: Accelerator switch switching point
4-8 mm (.16-.31 in.)
(3) If the distance (A in the figure) is not within the standard value, adjust it by using the adjusting bolt.
I1 TSB Revision

13-330ENGINE CONTROL - Engine Control
ENGINE CONTROL
REMOVAL AND INSTALLATIONM13OA--
Post-installation Operation Adjustment*Accelerator Cable*Accelerator SwitchI1
i
4-6 Nm
/ 3-4 ft-‘bs.
4-6 Nm3-4 ft.lbs.\
Sealant:3M ATD Part No.8663or equivalent
\8-12 Nm
6-9 ft.lbs.
07A0025
lr07A0031
Removal steps
1. Adjusting bolt
2. Throttle body side inner cable
l 43.Bushing
I)+4. Accelerator arm side inner cable4*5. Accelerator pedal6.Spring
7. Accelerator switch connector CM>
l +8. Accelerator arm bracket
9. Split pin
10.Acceleratorarm11. Return spring12. Accelerator switch CM>13.Acceleratorarmstopper
14. Bolt
SERVICE POINTS OF REMOVALM13oBAC
5. REMOVAL OF ACCELERATOR PEDAL
Pull the left side of the accelerator pedal toward you, and
then remove the accelerator pedal from the accelerator
arm.
TSB Revision

ENGINE CONTROL - Engine Control13-331
4. APPLICATION OF GREASE TO ACCELERATOR ARM
SIDE INNER
CABLE/3. BUSHING
(1) Securely install the resin bushing of the accelerator
cable on the end of the accelerator arm.
(2) Apply multipurpose grease around the cable end.
INSPECTIONMl3ocAH
l Check the inner and outer cable for damage.
l Check the cable for smooth movement.
l Check the accelerator arm for bending.
l Check the return spring for deterioration.
l Check the connection of bushing to end metal fitting.
l Check the accelerator switch for ON/OFF switching.

SERVICE POINTS OF INSTALLATIONMlJODAW
8. APPLICATION OF SEALANT TO ACCELERATOR ARM
BRACKET
Apply the specified sealant to the bolt mounting hole, and
then tighten the accelerator arm bracket.
Specified sealant: 3M ART Part No.8663 or equivalent
TSB Revision

13-334AUTO-CRUISE CONTROL SYSTEM - Troubleshooting
TROUBLESHOOTIN
G
MlJEBDH

The auto-cruise control system performs control functions for
the setting or cancellation of the fixed-speed driving speed bas-
ed upon the data provided by input signals. As a result, when
the auto-cruise control system is canceled, the cause of the
cancellation is memorized in a separate circuit by the ECU,
regardless of whether or not the auto-cruise control system
condition is normal or abnormal, thus providing the ECU with
the on-board diagnostic function by certain fixed patterns, as
well as the function of being able to check whether or not the
ECU’s input switches or sensor are normal. Thus, by effectively
using these function, the time required checking and repair can
be shortened.
NOTE
When the computer (ECU) power supply (ignition switch andmain switch) is switched OF-F, the memorized diagnostic
trouble codes are erased, and so for this reason the power
supply must be left ON until the checking is completed.
TROUBLESHOOTING QUICK-REFERENCE CHART
when cancellation not wanted.
be set after an automatic cancellation. ECU: Electronic control unit
After the occurrence of the problem, wasYes. With the main switch ON and the engine
the ignition switch and main switch leftrunning, check the diagnostic trouble code.
ON?+ (P.13-361)
No
Can the auto-cruise control system be set
_r-l;
Yes
No (new normal)Check whether or not, then, the vehicle was driven on a
steep slope, or the SET and RESUME control switches
were operated simultaneously. (The cause is not clear
under the present circumstances.)
TSB RevisionI

13-360AUTO-CRUISE CONTROL SYSTEM - Troubleshooting
11. CHECKING THE THROTTLE POSITION SENSOR AND CLOSED THROTTLE POSITION S\
WITCH
CIRCUIT
(12)
Auto-crursecontrol unit
I 2EB16 I
lntr’
(18)
MFI controlmodule1380424
(12)
models

>
control
unrt
I f
Throttleposrtronsensor
Closed throttle-position swrtch
(18)MFI controlmodule
<1993models

>
13A0425(12)Auto-cruise
control unit
Throttleposition
sensorClosed throttle ‘position
switch
(18)MFI controlmodule13A0428
Description of operation
The throttle position sensor and closed throttle position switchare mounted in the idle speed control motor position sensor Orthrottle body and are sensors in the MFI system. The closed
throttle position switch is turned OFF when the accelerator
pedal is pressed and ON when it is released. In addition, throttle
position sensor output voltage varies according to the degree of
opening of the throttle valve.
Troubleshooting hint

Diagnostic-No.17

Diagnostic-No.1 7
ECU terminal voltage
TerminalNo.
4
5 Signal
Conditions
Terminal
voltage
Closed throttle When accelerator Battery
position switch
-pedal is pressedpositive voltage
When accelerator
pedal is releasedov
ThrottleWhen accelerator 4.0v-5%’position sensorpedal is pressedall the way down
When accelerator 0.48~0.72v
pedal is released
1 TSB Revision

AUTO-CRUISE CONTROL SYSTEM - Troubleshooting13-365
AUTO-CRUISE CONTROL RELATED HARNESSES


16AO621
1 - Starter motor 7 - Clutch pedal position switch 14 - Overdrive switch2 - Park/neutral position switch8 - Column switch
15 - Control harness and body harness coupling
3 - Actuator , 9 - lgnrtion switch
16 - Control harness and body harness CouplingAuto-cruise pump10 - Stop light switch 17 - Diode 11 - Accelerator control unit16 - MFI control module4 - 4 A/T control module12 - Auto-cruise control unit
5
- Combination meter13 - On-board diagnostic output
6 - Combination meterterminal
TSB Revision

13-366AUTO-CRUISE CONTROL SYSTEM - Troubleshooting

SOHC

w ,-,’<:
z
\ ‘8.-.-,‘I\ 1:FI ‘iiI -I \’1: j\\dd
/T&Jq
< 1993 models>
DOHC
[Front side view1-.._ -.-- ~
l’e‘--
??A-
‘LA
\\/’ w 36AO175
19 - Throttle position sensor
20 - Idle speed control motor position sensor
21 - Closed throttle position switch
22 - Throttle position sensor (Closed throttle position switch)
36AO303
TSB RevisionI

13-368AUTO-CRUISE CONTROL SYSTEM - Troubleshooting
AUTO-CRUISE CONTROL COMPONENTS LOCATION
NOTEThe “Name” column is arranged in alphabetical order.
SOHC DOHC
07AOO35

13A0218
TSB Revision
i