1991 MITSUBISHI 3000GT Service Manual

CRUISE CONTROL SYSTEM - Service Adjustment Procedures13-183
onoo5J16LO285
141014;
TFA0359
16FO13LResistance
3--1Okl2
STOP LIGHT SWITCH/BRAKE SWITCH INSPECTION(1) Disconnect the connector.
(2) Check for continuity between the terminals of the switch.
O-O: Continuity
Brake switchStop light switch
1423
Whenbrakepedal00depressed.
When
brake
pedal00not depressed.CLUTCH SWITCH INSPECTION
(I) Disconnect the connector.
(2) Check that there is continuity between the terminals when
the clutch pedal is depressed, and that there is no
continuity when the pedal is released.
INHIBITOR SWITCH (“N” POSITION) INSPECTION
(1) Disconnect the connector.
(2) Check to be sure that there is continuity between connec-
tor terminals
@and @when the shift lever is moved to the
“N” range.
VEHICLES SPEED SENSOR INSPECTION
Use circuit tester to check circuit repeats off/on between
terminals when speedometer shaft turned several times.

(1) Remove the vehicle’s speed sensor and connect as shown
in the illustration, using a 3
- 10 kQ resistance.
(2) Use a voltmeter to check for voltage at terminals @ and @
when the pulse generator shaft is turning. (One revolution
is four pulses.)
16R0273
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13-184CRUISE CONTROL SYSTEM - Service Adjustment Procedures
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07A005t07A005i
THROlTLE POSITION SENSOR INSPECTIONFor inspection, refer to
P.13-65.
IDLE POSITION SWITCH INSPECTIONFor inspection, refer to
P.13-68.VACUUM PUMP INSPECTION
Inspection of Solenoid Valves (Control and Relief Valves)(1) Disconnect the connector of the vacuum pump assembly.
(2) Measure the resistance values across terminals @ and @
and across terminals @ and
0.Standard value: 50
- 60 R
(3) Check that when the battery voltage is applied across
terminals @ and @ and across terminals @ and
0, the
operating sounds of the solenoid valves are heard.
(4) If the solenoid valves are defective, replace the vacuum
pump assembly.
Inspection of Motor
(1) Disconnect the connector of the vacuum pump assembly.
(2) Check that when the battery voltage is applied across
terminals @ and
@, the motor operates.
ACTUATOR INSPECTION(1) Remove the actuator.
(2) Using a vacuum pump, apply a negative pressure to the
actuator to check that the holder portion moves more than
35 mm (1.4 in.). Retain the negative pressure in that state to
check that the holder portion does not change its position.
(3) After the actuator has been mounted, check and adjust the
cruise control cable. (Refer to
P.13-178.)
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CRUISE CONTROL SYSTEM - Cruise Control System13-185
CRUISE CONTROL SYSTEMM13TD. -
L;REMOVAL AND INSTALLATION
5Nm
4
ft.lbs.
h :
17P18 16
5Nm
4
ft.lbs.7Post-installation Operation
11 l Cruise Control Cables Adillstmcwt 1j(Refer to P.13-178.)--’ -->---“‘-.,-
Removal steps of actuator
81. Link protector2. Connection of accelerator cable and link
assembly
3. Connection of cruise control cable andlink assembly4. Connection of throttle cable and linkassembly5. Vacuum pump connectorl *6. Connection of vacuum hose and vacuum
pump7. Link assembly and vacuum pump
8. Vacuum pump
9. Pump bracket
IO. Link assembly11. Link bracket
12. Connecti0.n of accelerator cable andaccelerator pedal
13. Accelerator cable
14. Connection of throttle cable and throttlebody
15. Throttle cable
16. Actuator and actuator bracket17. Connection of cruise control cable and,
Ld
actuator18. Actuator
19. Actuator bracket
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13486CRUISE CONTROL SYSTEM - Cruise Control System
1.6
- 2.2 ft.lbs.
07FOO27
Removal steps of control switches
l *20. Air bag module
21. Air bag module bracket
22. Cruise control switch
23. Switch garnish24. Main switch
Removal steps of sensors and switches
28. Throttle position sensor
29. Accelerator pedal switch30. Stop light switch
31. Clutch switch
32. Vehicle speed sensor (Refer to GROUP 54 - Meters and Gauges.)33. Vehicle speed sensor (Refer to GROUP 54 - Meters and Gauges.)
4*
4*
Removal steps of control unit
25. Scuff plate (R.H.)26. Cowl side trim (R.H.)27. Cruise control unit34. Inhibitor switch

2807FOO28
68FOO12
07FOO20
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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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