1991 MITSUBISHI 3000GT service

CRUISE CONTROL SYSTEM - Cruise Control Svstem13-187Vacuum hoseSERVICE POINT OF REMOVAL
Ml3lDBG20. REMOVAL OF AIR BAG MODULE
(1) Remove the negative terminal of the battery and wait
for more than 30 seconds.
CautionThe capacitor in the SRS diagnosis unit retains
enough voltage to deploy the air bag for a given
period even after disconnection of the battery. If anoperation is performed during that given period,
unintended deployment of the air bag could result
and cause serious injury.(2) Remove the air bag module. To remove the clock spring
connector (squib connector) from the air bag module,
force the lock outward and pry it with a plain screwdriv-
er as shown at left so that no undue force will be
exerted on the connector when it is removed.
(3) The removed air bag module should be stored in a
clean, dry, flat place with the pad side up.
INSPECTION
MlJTDCFl Check the inner and outer cable for damage.
l Check the cable for smooth movement.
l Check the link protector for damage.
INSPECTION OF INDIVIDUAL PARTSRefer to Service Adjustment Procedures
- Individual Parts
inspection (P.l3-181).
SERVICE POINT OF INSTALLATION
M13TDDF
6.CONNECTION OF VACUUM HOSE TO VACUUM PUMPRoute the vacuum hose over the throttle cable and connect
the hose to the vacuum pump so as to prevent the
slackened hose from interfering with other parts.
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COOLINGCONTENTS
M14AA..
ENGINE COOLANT TEMPERATURE GAUGE
UNIT, ENGINE COOLANT TEMPERATURESENSOR AND ENGINE COOLANT
TEMPERATURE SWITCH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .._.__15
RADIATOR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
SERVICE ADJUSTMENT PROCEDURES . . . . . . . .7Cap Pressure Test
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .._.......7Engine Coolant Concentration Test
. . . . . . . . . . . . . . . .‘7
L,Engine Coolant Leak Check
. . . . . . . . . . . . . . . . . . . . . . . . . . . .7Engine Coolant Replacement
. . . . . . . . . . . . . . . . . . . . . . . .7
SPECIFICATIONS. . . . . . . . . . . . .._.................................General Specifications
. ..___....___._...___.__............Lubricant
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .._.................._........Sealant and Adhesive
. . . . . . . . . . . . . . . . .._...........Service Specifications
. . . . . . . . . . . . . . . . . . . . . . . . . .
THERMOSTAT. . . ..__......................_.._...................
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .._...No Rise in Temperature
Overheat
WATER PUMP, WATER PIPE AND WATER
HOSE. . . . _......_........_ _.._ .._..... . . . . . . . . . . . ._. . . . . . . . . . . . . . . . .
2
2
2
3
2
11
3
13

14-2COOLING - SDecifications
SPECIFICATIONSGENERAL SPECIFICATIONSMMCA..
Items
Cooling method
Radiator
Type
Radiator fan motor
Type
Water pump
Type
Thermostat
Type
Identification markSpecifications
Water-cooled, pressurized, forced circulationwith electrical fan
Pressurized corrugated fin type
Direct current ferrite type
Centrifugal impeller type
Wax type with jiggle valve
76.5 (Stamped on flange)
dSERVICE SPECIFICATIONS
Items
Standard valueSpecifications
Range of coolant antifreeze concentration%30-60
Thermostat
Valve opening temperature of thermostat
“C (“F)
Full-opening temperature of thermostat“C (“F)
Opening pressure of cap high pressure valvekPa (psi)
Therm0 sensor (on radiator) operating temperature

OFF-t ON“C (“F)
ON -+ OFF“C (“F) condenser fan-Vehicles with air conditioner>
OFF-ON“C (“F)
ON + OFF“C (“F)
Limit
76.5 (170)
90
(I 94) or more
75-105(11-15)81-89
(178- 192)77(171)orless
91-99
(196-210.)
87 (189) or less
Opening pressure cap high pressure valve
kPa (psi)65 (9.2)LUBRICANT
MlQCD- -
ItemSpecified lubricantQuantity
Engine coolantlit. (qts.)High quality ethylene glycol8.0 (8.5).
antifreeze coolant
‘d
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COOLING - Service Adiustment Procedures.14-7
SERVICE ADJUSTMENT PROCEDURES
ENGINE COOLANT LEAK CHECKMl4FAAF
1. Loosen cap.
2.Confirm that the engine coolant level is up to the filler neck.
3.Install an adapter to the water outlet fitting and apply 160
kPa (23 psi) pressure. Hold pressure for two minutes, while
checking for leakage from the radiator, hose or connec-
tions.
CautionBe sure to completely clean away any moisture from
the places checked.
When the tester is removed, be careful not to spill anyengine coolant from it.
Be careful, when installing and removing the tester andwhen testing, not to deform the water outlet fitting.
4. If there is leakage, repair or replace the appropriate part.
CAP PRESSURE TESTM14FBAH1. Use a special tool to attach the cap to the tester.
2.Increase the pressure until the indicator of the gauge stops
moving.
Limit: 65
kPa (9.2 psi)
Standard value: 75
- 105 kPa (11 - 15 psi)
3:Replace the cap if the reading does not remain at or above
the limit.
NOTEBe sure that the cap is clean before testing, since rust or
other foreign material on the cap seal will cause an
improper indication.
ENGINE COOLANT REPLACEMENTM14FCAGRefer to GROUP 00
- Maintenance Service.
ENGINE COOLANT CONCENTRATION TEST
M14FDALRefer to GROUP 00
- Selection of Coolant.
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COOLING - Radiator14-S
- 04N0002
SERVICE POINT OF REMOVALM14QBAK8. DISCONNECTION OF AUTOMATIC TRANSAXLE OIL
COOLER HOSESUse a plug or otherwise cover the hose and nipple part of
the radiator so that dust, dirt, foreign materials, etc. do not
enter after the hose has been disconnected from the
radiator.
INSPECTIONM14QCAN
l Check for foreign material between radiator fins.
l Check the radiator fins for bent, or damage.
l Check the radiator for corrosion, damage rust or scale.
lCheck the radiator hoses for cracks, damage or deteriora-
tion.
l Check the reserve tank for damage.
lCheck the automatic transaxle oil cooler hoses for cracking,
damage or deterioration.
RADIATOR FAN MOTOR INSPECTION
(1) Check to be sure that the radiator fan rotates when battery
voltage is applied between terminals (as shown in the
figure).(2) Check to see that abnormal noises are not produced, while
motor is turning.
INSPECTION OF RESISTOR(1) Measure the resistance between connector terminals @
and @ of the radiator fan motor.
(2) The resistor is normal if the resistance is within the
following range.
Resistance: 0.29
- 0.35 IZ
THERM0 SENSOR INSPECTION
(1) Immerse the water temperature switch in hot water as
shown.
(2) Change the water temperature and check continuity with a
circuit tester.. If it is as specified below, the switch is
functioning correctly.
Item
With continuityb;F;;ature of
Without continuity
(t;,n-r3;rature ofFor condenser fanFor radiator fan91
- 99°C81 - 89°C(196 - 210°F)(178 - 192°F)87°C (189°F)
’77°C (I 71 “F)
or lessor less
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14-10COOLING - Radiator
r-----I
113
EY
4 :
2 :
i.-.-..i
0312161908
Ionnector04FOOO8
RADIATOR FAN MOTOR RELAY INSPECTION
(1) Remove radiator fan motor relay from the relay box located
at the right side in the engine compartment.
Ll(2) Check for continuity between the terminals when the
battery power-supply is applied to terminal
0, and terminal@ is grounded.
When current
flowsBetweenterminals 1
- 3Continuity
When nocurrent flowsBetweenterminals 1 - 3No continuity
Betweenterminals 2 - 4Continuity
SERVICE POINT OF INSTALLATIONM14QDAH
11. CONNECTION OF RADIATOR FAN MOTOR CONNEC-
TORConnect the radiator fan motor connector to the body
harness. Then, insert into the shroud hole and fix securely.
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14-12COOLING - Thermostat
Air intake hose B
05FOO23
,
SERVICE POINTS OF INSTALLATIONM14GEAI7. INSTALLATION OF THERMOSTAT
Install the thermostat with its jiggle valve lined up with the ,
”mark on the thermostat housing.LJ2. INSTALLATION OF AIR INTAKE HOSE A
Assemble the air intake hose A with its notches (arrow-
marked) lined up with the
L marks on the air intake hoses
B and C. Insert the hoses into the air intake hose A until
they are bottomed.
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COOLING - Water Pump, Water Pipe and Water Hose
WATER PUMP, WATER PIPE AND WATER HOSE
14-13
M14MB-B
/REMOVAL AND INSTALLATION
Pre-removal and Post-installation
Operation
l Draining and Supplying of the Engine Coolant
(Refer to GROUP 00 - Maintenance Service.)l Removal and Installation of Power Transistor
Unit and Ignition Coil
(Refer to GROUP 16 - Engine Electrical)l Removal and lnstallatlon of Timing Belt
(Refer to GROUP 11 -Timing Belt)17-20 Nm17-20 Nm
12-14ft.lbs.
1
12-15Nm9-11 ft.1bs.q
Removal steps
1. Water pump
2. Gasket
3. Air hose A
4. Air intake hose A
5. Air intake hose B
6. Air intake hose C
7. Air intake hose
8. Connection of radiator upper hose
9. Connection of water hose
IO. Water outlet fitting11. Gasket
12. Connection of harness
13. Connection of heater hose
14. Connection of water hose A
15. Connection of water hose
16. Connection of water hose
17. Connection of radiator lower hose
18. Connection of water hose
19. Thermostat housing
20. Gasket21.
Her water pipe22. O-ringOlFOO51
Installation steps
2. Gasket** 1. Water pumpI)+ 22. O-ring
l * 21. Inlet water pipe
20. Gasket
19. Thermostat housing18. Connection of water hose 17. Connection of radiator lower hose16. Connection of water hose
15. Connection of water hose
14. Connection of water hose A
13. Connection of heater h&e
12. Connection of harness11. Gasket10. Water outlet fitting
9. Connection of water hose
8. Connection of radiator upper hose7. Air intake hose l *6. Air Intake hose C **5. Air intake hose B l *4. Air intake hose A
3. Air hose A
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