sensor MITSUBISHI GALANT 1989 Service User Guide

II-60ENGINE -Service Adjustment Procedures
(9) If a cylinder’s compression pressure or pressure differenceis outside the limit, fill a small amount of engine oil through
the spark plug hole and repeat Items (7) and (8) above.
@ If the compression is increased when the oil is filled, the piston
and/or cylinder wall may be worn or
damaged.
@ If the compression is not Increased even though the oil is filled, the valve may be thermally seized, the valve
contact may be improper or pressure may leak at the
gasket. (10)Connect the connector of the crankshaft position sensor.
(1l)lnstall
the spark plug and spark plug cable.
(12)Erase the diagnostic trouble code with the scan tool or re-
connect the battery (-)
cable 10 seconds or more after it
was disconnected.
NOTE
This will erase the memory of the diagnostic trouble code which resulted from disconnection of the crankshaft posi-
tion sensor connector.
MANIFOLD VACUUM INSPECTION MllFNAD
(1) Before inspection and adjustment, put the vehicle into the following state.
l Engine coolant temperature:
85-95°C (185-205°F)
l Lights, motor cooling fan, and accessories: OFF
l Transaxle:
N (Neutral)
l Steering wheel: Neutral
(2) Check that the idling revolution speed is normal.
(3) Remove the PCV hose from the PCV valve and attach a
vacuum gauge.
(4) Check that the negative pressure at the intake manifold
during idle revolution is normal.
Standard value: Approx. 500 mmHg
(20 in.Hg)
(5) If outside the standard value, isolate the cause by referring to the following table and repair the fault.
Symptom
CauseRemedy
l The vacuum gauge reading is less thanstandard value, but the pointer isl Ignition timing is retarded. l Adjust the ignition timing.
stable.
l The vacuum gauge pointer swings
slowly.l The gas mixture is excessivelyrich.l Check Multiport fuel injectionsystem.
l The vacuum gauge pointer drops irre- gularly.
l The gas mixture is excessively
lean.l Check Multiport
fuel injectionsystem.
l The vacuum gauge pointer drops inter-mittently to 30 to 160 mmHg
(1.2 to * Incomplete close contact of Intake
and exhaust valve seats.l Check and repair the valve.
6.3 in.Hg).
l The vacuum gauge pointer drops sud- denly
from the normal reading to 250 . Broken cylinder head gasketl Replace cylinder head gasket.
mmHg (9.8 in.Hg), then returns tonormal.
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ENGINE - Engine Assembly11-65
models>
4-6
Nm
25
18
05AO196
I
23\il4-6 Nm3-4 ftlbs.
12. Connection for engine coolanttemperature switch
13. Connection for oxygen sensor
14. Connection for engine coolant
temperature sensor
15. Connection for engine coolant
temperature gauge unit
16. Connection for air conditioning engine
coolant temperature switch
17. Connection for
IAC motor
18. Connection for closed throttle position switch 19. Connection for fuel injectors
20. Connection for EGR temperature sensor
(California vehicles only)
21. Connection for knock sensor (Turbo)
22. Connection for ignition coil
23. Connection for ignition power transistor
24. Connection for throttle position sensor
25. Connection for crankshaft position sensor
26. Connection for ground cable
27. Control wiring harness
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1

II-68ENGINE -Camshaft and Camshaft Oil Seals
CAMSHAFT AND CAMSHAFT OIL SEALS
REMOVAL AND INSTALLATIONMIIZA-0
*Il Servtce Adjustment Procedures
2.5-3.5 Nm2.5-3.5 Nm^ ^ *. I.-3 -3YIL-L--J I-LIDS.L-S TLIDS.
19-21 Nm14-15 ft.lbs.
4
I ^
19-21 NmAlo-13 Nm-.. -IL-14-15 ft.lbs.-Y I-LIDS. 80-100

Nm58-72 ft.lbs.
Removal steps
I Connection for accelerator cable or throttle cable (Refer to GROUP
13-Service Adjustment Procedures.)
2. Timing belt (Refer to P.l I-80.)3. Center cover
6. Connection for spark plug cables
7. Rocker cover
8. Semi-circular packing
9. Throttle body stay
++ 10. Crankshaft position sensor
4,11. Exhaust camshaft sprocket
4*12. Intake camshaft sprocket+e I)+ 13. Camshaft oil seals 41)
l + 14. Front camshaft bearing caps
+e l * 15. Camshaft bearing caps+e l + 16. Rear camshaft bearing cap (R.H+e l a 17. Rear camshaft bearing cap (L.H.l + 18. Exhaust camshafte+ 19. Intake camshaft
NOTE+1 : *2 :
Nmft.lbs.
head
7
10 mm
@
10 mm(.4 in.)10 mmc.4 In.)(.4 In )
OlAca
Sealant: 3M ATD Part No.8880or equivalent
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ENGINE - Camshaft and Camshaft Oil Seals
11-69
SERVICE POINTS OF REMOVAL
MllZBAD
11. REMOVAL OF EXHAUST CAMSHAFT SPROCKET/ 12. INTAKE CAMSHAFT SPROCKET
(1) Using a wrench at the hexagonal part of the camshaft (to prevent the crankshaft from turning), loosen the
cramshaft sprocket bolt.
(2) Remove the camshaft sprokets.
Plastic hammer
Intake side Exhaust side
q 48
Slits 13. REMOVAL OF CAMSHAFT OIL SEALS
Remove the oil seals using a screwdriver or similar tool.
Caution
Take care not to damage front camshaft bearing cap and camshaft.
14./15./16./17. REMOVAL OF CAMSHAFT BEARING CAPS
(1) Loosen the bearing cap installation bolts in two or three steps.
(2) Remove the bearing cap.
NOTE
If the bearing cap is difficult to remove, use a plastic
hammer to gently tap the rear part of the camshaft,
and then remove.
SERVICE POINTS OF INSTALLATION M, 1zDAF
19. INSTALLATION OF INTAKE
CAMSHAFT/18.
EXHAUST
CAMSHAFT
(1) Install the camshafts on the cylinder head.
Caution
Be sure not to mistake the intake side and
th!
exhaust side. There are slits for crankshaft posl-
tion sensor drive in the rear end of the intake cam-
shaft.

ENGINE - Camshaft and Camshaft Oil Seals
zI?mo”e the rocker arms.
Install new camshafts using the following procedure.
(2) Lay the camshafts on the cylinder head and install the bearing caps.
(3) Check that the camshaft can be easily turned by
hand.
(4) After checking, remove the bearing caps and the camshafts, and install the rocker arms.
3iF-Dowel Din
(2) The camshaft’s dowel pins should be at the positions
shown in the figure.
Intake.side
17./16./15./14. INSTALLATION OF CAMSHAFT BEARING
CAPS
Tighten the bearing cap installation bolts to the specified
torque in two or three steps.
Caution
Tighten uniformly, otherwise the rocker arms will not be straight.
ADDIY a coatioi ‘oil to the outer
circumferenceCahshaft
Mating markat plate side/
at hoising sidellA0361(3) Check that the ignition timing is set at the standard
value. (Refer to GROUP
16-Ignition system.)
TSB Revision 13. INSTALLATION OF CAMSHAFT OIL SEALS
Using the special tool, press in the oil seal as shown in the
figure.
10. INSTALLATION OF THE CRANKSHAFT POSITIO
N
SENSOR
(1) Align the mating mark (punch mark) on the housing of
the crankshaft position sensor with the mating mark(notch) in the plate.
(2) Install the crankshaft position sensor to the engine.
Caution
When tightening the nut of the crankshaft posi-
tion sensor, make sure that the crankshaft posi-
tion sensor does not turn.

ENGINE - Cylinder Head Gasket11-73
CYLINDER HEAD GASKET
MllJA-9
REMOVAL AND INSTALLATION
9-14 Nm
7- 10 ft.lbs.
OlA0408
8-10 Nm
6-7 ft.lbs.
-11 ‘
4
A17
-16
4-6 N
m
---3-4
ftlbs.
OlA0649
17.
18.
19.20.
l **421.
22.
23.
74Removal steps
1. Branch tube
2. Air hose A (Turbo)
3. Radiator assembly (Refer to GROUP
14-Radiator.)
4. Volume air flow sensor
connector
5. Resonator assembly
6. Turbocharger waste gate solenoid (Turbo)
7. Fuel pressure solenoid (Turbo) 8. EGR solenoid (Turbo)
-
9. Air cleaner assembly
11. Connection for purge25.
hose (Turbo)12. Connection for by-passair hose (Turbo)13. Air intake hose10. Breather hose
14. Connection for air hose26.
D (Turbo)15. Connection for27.
vacuum hose28.
16. Connection for water29.
hose (Turbo)
I
Connection for water
by-pass hose
Connection for heater
hose
PCV hose
Connection for
vacuum hose (Turbo)
Connection for
high-pressure fuel hose
O-ring
Vacuum hose (Turbo) Connection for fuel
return hose
Connection for
accelerator cable or
throttle cable (Refer to GROUP
13-ServiceAdjustment
Procedures.)
Connection for brake
booster vacuum hose
Eye-bolt (Turbo)
Gasket (Turbo)
pun;;;tron for oil pipe
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I

ENGINE - Cylinder Head GasketII-75
4-6 Nm
Z&-y,bfm
‘\ .
,,\:.,.s.
46
4-6
‘Nm $7
3-4 ftlbs.
41
43
42
IO-12 Nm
7-9 ft.lbs.
05A0199
Removal steps
30. Connection for engine coolant
temperature switch
31. Connection for oxygen sensor
32. Connection for engine coolant temperature sensor
33. Connection for engine coolant
temperature gauge unit
34. Connection for air conditioning engine
coolant temperature switch
35. Connection for injector
36. Connection for EGR temperature sensor
(California vehicles only) 37. Connection for knock sensor (Turbo)
38. Connection for ianition coil
39. Connection for ignition power transistor
40. Connection for throttle position sensor
41. Connection for crankshaft position sensor
42. Connection for IAC motor
43. Connection for closed throttle position
switch
44. Connection for vacuum hoses
45. Center cover
46. Connection for spark plug cable assembly
47. Control wiring harness
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13-1
FUEL
CONTENTSM’ISAA--
AUTO-CRUISE CONTROL SYSTEM.............
.
332
AUTO-CRUISE CONTROL ............................. 408
SERVICE ADJUSTMENT PROCEDURES .................397
Accelerator Cables
inspectron and Adjustment ........
.
398 Auto-cruise
Control System Inspection
..............397
Individual Parts Inspection ......................
401SPECfAL
TOOLS
.....................................
333
SPECIFICATIONS .................................... 332
TROUBLESHOOTING ................................. 334
Auto-cruise Control Components Location ..........368
Auto-cruise Control
Related Harnesses
..........365
Check Chart ................339
Check Chart ..............354
Circuit Diagram ................................
371input Checking................................
.
366
On-board Diagnostic Checking ......................
361Troubleshooting Quick-reference Chart
.........................
.
334
Troubleshooting Quick-reference Chart ............................. 350
ENGINE CONTROL...............................
.
328
ENGINE CONTROL ..................................
330
SERVICE ADJUSTMENT PROCEDURES .................329
Accelerator Cable inspectron and Adjustment
...........329
Accelerator Switch Inspection and Adjustment ..........329
SPECIFICATIONS ....................................
328
TROUBLESHOOTlNG................................
.
328
Accelerator
Cable and Accelerator Pedal .............
.
328
FUEL SYSTEM ........................196
FUEL FILTER .........................................
327
FUEL LINE AND VAPOR LINE
...............
.
326
FUEL LINE AND VAPOR LINE
...............
.
324
FUEL TANK
...............................
.
322
FUELTANK ...............................
.
318
GENERAL INFORMATION ............................ 196
ON-VEHICLE INSPECTION OF MFI
COMPONENTS
......251
Air Conditioning Switch and A/C Compressor Clutch Relay .....................................
285
Barometric Pressure Sensor .................... 266
Boost Meter .............................
311Camshaft Position Sensor ........................
.
277Closed Throttle Position Switch
.....................
.
274
Component Location .............................
251Components Inspection Pocedure
................. 255
Crankshaft Position Sensor ..................... 280EGR
Solenord
...................
.
307EGR Temperature Sensor
.............
.
288Engrne Control Module Power Ground
................
.
257
Engine Coolant Temperature Sensor ..................
268Evaporative Emission Purge Solenoid .................
.
307
Fuel Pressure Solenoid ....................
307Fuel Pressure Test...............................
.
312
Fuel Pump ...................................... 258
Heated Oxygen Sensor ............................ 290
Idle Air Control Motor (Stepper Motor) ................
238Ignition Coil and Ignition Power Transistor .............
.
302
Ignition Switch-ST .................................. 284
Ignition Switch-ST and Park/Neutral Position Switch .....284
Injectors .......................................
295Inspection of Engine Control Module Terminal
Voltage .......................................
.
315
Intake Air Temperature Sensor .......................263
Knock Sensor .............287
Power Steering Pressure Switch ......................
284Power Supply and Ignition Switch ...................
.
255Resistor
..............................
.
298Terminal Voltage Check Chart
......................
.
315Throttle Position Sensor
..........................
.
270Turbocharger Waste Gate Solenoid
.........
.
309 Vehicle
Speed Sensor
............................... 284
Volume Air Flow Sensor ............................
261SERVICE ADJUSTMENT PROCEDURES ...............
.
245
Basic
idle Speed Adjustment .......................
.
245
Closed Throttle Position Switch (Fixed
SAS)Adjustment ......................................
.
250
Curb
Idle Speed Inspection
..........................245Throttle Body (Throttle Valve Area) Cleaning
...........
.
248Throttle Position Sensor Adjustment
..................
.
248
SPECIALTOOLS...................................
.
204
SPECIFICATIONS ...................................
201TROUBLESHOOTING ...............................
.
205
Check Engine/Malfunction Indicator Lamp ..............205
Circuit Diagram .................................... 214
Clear Memory of Diagnostic Trouble Code .............
211Explanation and Precaution Related to Harness
Checking ......................................
.
205Explanation of Troubleshooting Procedures
............
.
205Failsafe/Back-up Functions List
.....................
.
211Fuel tank and Fuel Line
............................
.
244
Read Out Diagnostic Trouble Code ...................
211Troubleshooting Table
.............................
.
208(CONTINUED ON NEXT PAGE)

13-2
FUEL SYSTEM VALVE>
..........
FUEL FILTER ....................................
FUEL LINE AND VAPOR LINE .....................FUELTANK....................................
.
GENERAL INFORMATION ........................
ON-VEHICLE INSPECTION OF MFI
COMPONENTS . .
Air
Conditionrng Switch and A/C CompressorClutch Relay ......
.
.............
Barometric Pressure Sensor .........
Camshaft Position Sensor ...........
Closed Throttle Position Switch ...........
Component Location .............
Components
Inspectron Procedure .......
.
Crankshaft Positron Sensor ............
EGR Solenoid ......
. . .3. .
115..,.113
. 109
. . 3
. . . 38
83
536961384173101EGR Temperature Sensor .........
.
85
Enqine Control Module Power Ground ......
.
....
45
Engine Coolant Temperature Sensor ...............
55Evaporative Emission Purge Solenord..............
.
99
Fuel Pressure ...............................
102Fuel Pump
...................................
.
46
Idle Speed Control Motor (DC Motor) ................
.
93
Idle Speed Control Motor Positron Sensor ............
.
64
lgnitron Co11 and Ignition Power Transistor .........
.
96
Ignition Switch-ST ..........................
77Ignition Switch-ST and Park/Neutral Position Switch
...78
Injectors..................................
.
90
Inspection of
Engrne Control Module Terminal
Voltage .........
.
..........................
105Intake Air Temperature Sensor ..................
.
51Oxygen Sensor
............................
.
87Power Steering Pressure Switch
..................
.
81Power Supply
.........................
.
42
Terminal Voltage Check Chart ......................
106Throttle Positron Sensor.....................
.
57Vehicle Speed Sensor
.........................
.
80
Volume Air Flow Sensor .........................
49
SERVICE ADJUSTMENT PROCEDURES .................
32
Basic
Idle Speed Adjustment ...................
.
33
Curb Idle Speed Inspection ..........................
32Throttle Body (Throttle Valve Area) Cleaning........
.
35
Throttle Positron Sensor Adjustment ................
35
SPECIAL TOOLS 7
.................
...................
SPECIFICATIONS ....................................
5
TROUBLESHOOTING .................................
8
Check Engine/Malfunction Indicator Lamp ..............
10Crrcuit Diagram.................................
.
20
Clear Memory of Diagnostic Trouble Code ............
17Explanation and Precaution Related to HarnessChecking......................................
.
9Explanation of Troubleshooting Procedures
...........
.
8
Failsafe/Back-up Functions List ....................
16Fuel Tank and Fuel Lrne.........................
.
32Read Out of Diagnostic Trouble Code
...............
.
16Troubleshooting Table
.........................
.
13
FUEL SYSTEM VALVE> ...........
116
FUEL FILTER .......................................
195
FUEL LINE AND VAPOR LINE ........................
195
FUEL TANK ........................................ 195
GENERAL INFORMATION ............................
116
ON-VEHICLE INSPECTION OF MFI
COMPONENTS
Air Conditioning Switch and A/C Compressor Clutch Relay .............................
Barometric Pressure Sensor .................
Camshaft Position Sensor ....................
Closed Throttle Position Switch ................
Component Location .......................
Components Inspectron Pocedure
..............
Crankshaft Position Sensor .................
EGR Solenoid
.................
EGR Temperature Sensor .......
Engine Control Module Power Ground ..........
Engine Coolant Temperature Sensor .............
Evaporative Emission Purge Solenoid ............
Fuel Pressure Test ...........................
Fuel Pump ..................................
IAC Valve Positon Sensor
......................
Idle Air Control Motor (DC Motor) ..............
lgnrtion Coil and Ignition Power Transistor
.......
.
Ignition Switch-ST ...........................
Ignition Switch-ST and Park/Neutral Position Switch
Injectors ....................................
Inspection of Engine Control Module Terminal
Voltage .....................................
Intake Air Temperature Sensor .................
Oxygen Sensor .............................
Power Steering Pressure
Swatch..............
.
Power Supply ...............................
Terminal Voltage Check Chart ..................
Throttle Position Sensor .......................
Vehicle Speed Sensor ......................... . . . . 139
176
154
165
16013914216
7
..,_ 191177146
155
189192
147
162
184
186
171172181
192152
179
175
143
192
157
173
Volume Air Flow Sensor ...........................
.
150
SERVICE ADJUSTMENT PROCEDURES
...............
.
133
Basic Idle Speed Adjustment 133
Closed Throttle Position Switch and Throttle Position
Sensor Adjustment .................................
136Curb Idle Speed Inspection
.........................
.
133Fixed SAS Adjustment
.............................
.
138Throttle Body (Throttle Valve Area) Cleaning
...........
.
136
SPECIAL TOOLS
...................................
.
119
SPECIFICATIONS 118
.... ..............................
TROUBLESHOOTING ..................
.............
119
Check Engine/Malfunction Indicator Lamp ..............
120Circuit Diagram...................................
.
128Clear Memory of Diagnostic Trouble Code
............
.
126Explanation and Precaution Related to Harness
Checking ........................................
.
119Explanation of Troubleshooting Procedures
............
.
119Failsafe/Back-up
Fuctions List
........................
126
Fuel Tank and Fuel Line .............................
133Read Out of Diagnostic Trouble Code ................
.
126
Troubleshooting Table ..............................
123

FUEL SYSTEM - General Information13-3
FUEL SYSTEM
GENERAL INFORMATION
MFI SYSTEM DIAGRAM

*1 Oxygen sensor
*2
Volume air flow sensor *3
Intake air temperature
sensor *4
Engine coolant tempera-
ture sensor *5
Throttle position sensor *6
Closed throttle position
switch *7 Camshaft position sensor
*8
Crankshaft position sen-
sor
‘9 Idle
speed control motor
position sensor
*I 0 Barometric pressure sensor
l Ignition switch-ST
l Power supply
l Vehicle-speed sensor
l Air conditioning switch
l Park/neutral position
switch
l Power steering pressure switch
A/T: Vehicles with an automatic transaxle
()/ $%?i modul
e
Closed throttle Evaporative
position switch emission canister
ir-con.)/ \
10
Throttle position
temp. sensor Fuel tank
- =
Oxygen M13BA-
I
*I Injector~2 Idle speed control motort3 Evaporative emission
purge solenoid
l Fuel pump control
l Multiport fuelinjection relay
l A/C compresser clutch
relay
l Ignition timing control
l On-board diagnostic
output
l Check engine/mul-function indicator lamp
Fue
l
: -
I
pump
purge
solenolo Catalvtic
converter
\/ *4 Thermal vacu valve Vacuum hose color
G: Green
R: Re
d
B: Black
L: Light blue
Y: Yellow
dJJ/ U’Engine coolant temp. sensor
PCV: Positive Crankcase Ventilation
6FU1125
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