1991 MITSUBISHI 3000GT lock

55-4 HEATER, AIR CONDITIONER AND VENTILATION -Specifications / Special Tools
LUBRICANTSM55CD. _
ItemsSpecified lubricants
Each connection of refrigerant lineFREOL S-83 or
SUNISO 5GS
Quantity
As required
SEALANT AND ADHESIVEM55CE- -
IItemsSpecified sealant and adhesiveI
Engine coolant temperature switch threaded part3M Nut Locking Part No. 4171 or equivalent
SPECIAL TOOLSMSSDA- -
multi-use tester)
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55-I 8HEATERS AND MANUAL AIR CONDlTlONER - Heater Control Assembly
HEATER CONTROL ASSEMBLY
REMOVAL AND INSTALLATIONM55GA-A
Pre-removal and Post-installation Operationl Removal and installation of Floor Console
(Refer to GROUP 52A- Floor Console.)
Removal steps
1. Stopper2. Glove box outer case assembly**3. Connection of the air-selection control wire
4. Ho01 lock release handle
5. Rheostat assembly
6. Rear wiper &washer switch
7. Knee protector
8. Shower duct
l *9. Connection of the mode control wirel * 10. Connection of the temperature control wirea*11. Center air outlet assembly
12. Heater control assembly
2OFOO78
III’ ’2OFOO3
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SERVICE POINT OF REMOVALM55GBAMl
11. REMOVAL OF CENTER AIR OUTLET ASSEMBLYDisengaging the clips (2 positions) of the center air outlet
assembly with a flat tip screwdriver, remove the center air
outlet assembly with the trim stick.
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55-20 HEATERS AND MANUAL AIR CONDlTlONER - Resistor, Belt Lock Controller
RESISTOR, BELT LOCK CONTROLLERM55JA- -
REMOVAL AND INSTALLATION
viRemoval steps
1. Stoooer
2OFOO732. Globk box outer case assembly
3. Resistor
4. Under cover
5. Belt lock controller
- 2OPOOl
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INSPECTION
RESISTOR CHECK
hl55JCADUsing a circuit tester, measure the resistance between the
terminals indicated below.
The condition can be considered satisfactory if the value
measured at this time is equivalent to the standard value.
Standard value
Terminals measuredStandard value fi
Between terminals a-- @Approx. 1.79 - 2.06
Between terminals
@ -@Approx. 1 .I 0 - 1.26
Between terminals @ - @Approx. 0.38 - 0.44vision

55-36 HEATERS AND MANUAL AIR CONDITIONER -Ventilators (Instrument Panel)
VENTILATORS (INSTRUMENT PANEL)M55YA- -
REMOVAL AND INSTALLATION
-16
/‘4
Removal steps
l * +a1. Knee protector
(Refer to GROUP 52A-Instrument Panel.)
2. Foot shower duct
3. Lap cooler duct
4. Under cover
5. Belt lock controller
6. Side defroster hoses A
7. Duct (Vehicles without air conditioner)
** l +8. instrument panel (Refer to GROUP 52A-instrument Panel.)
9. Center duct
10. Air duct (right side)
11. Air duct (left side)12. Distribution duct (center)
13.Defroster duct14. Side defroster hoses B
15. Defroster garnishes
16.Photo sensor17. Center air outlet assembly
18. Side air outlet assembly
19. Distribution duct (foot)2OFOO55
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Pre-removal and Post-installation Operationl Draining and Refilling of Engine Coolant(Refer to GROUP 00 - Maintenance Service.)
1. Engine coolant temperature switchHEATERS AND MANUAL AIR CONDITIONER
- Z!&E%Ltch55-39
ENGINE COOLANT TEMPERATURE SWITCH
M55xA- -
L
REMOVAL AND INSTALLATIONSealant: 3M Nut Locking Part No.
4171 or equivalent
BQQQQQ20A0199INSPECTION
MSSXCAAENGINE COOLANT TEMPERATURE SWITCH
(ALWAYS-
CLOSED TYPE CHECK)
(1) Immerse the engine coolant temperature switch in oil and
heat by a gas stove or similar method so as to increase the
oil temperature.(2) Check to be sure that the engine coolant temperature
switch is switched OFF when the oil temperature reaches
the standard value.Standard value: 112
- 118°C (233 - 244°F)
CautionUse engine oil for this test; stir it well while heating,
and do not heat more than necessary.
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FULL AUTO AIR CONDITIONER - Troubleshooting
CIRCUIT AND BENCH CHECK
i1 1. Inspection of air conditioner control unit power source circuit 1
,
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lgniswii
C:
I:Q
6r------.
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Ir~ B27 u
tion
tch 1(IG2)Junction block2:
E
28--6\
3
r-7\--7
LPower source 1I I
AYAir-conditioner control unit
2OFOO61
Troubleshooting Hintsl Air conditioner control unit terminal voltage
Terminal No.Signal nameConditionTerminal voltage
3Backup power sourceNormallyBattery voltage28, 36
Air conditioner control unitIgnition switch ONBattery voltage
power source
27, 35Air conditioner control unit
Normallyov
ground
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FULL AUTO AIR CONDITIONER - Troubleshooting55-495. Inspection of belt lock controller circuit
Compressor relay
tAir conditioner control unitAir conditioner
+control panelAir
condltloner,c.compressor commandAH condmonerarithmetic
circuitcompressor ONstgnal
ComparatorAir condltlonercompressor ON signal20 FOO58
Revolution pickup sensor
LiTroubleshooting Hintsl Air conditioner control unit terminal voltages
Terminal No.
Signal nameConditionTerminal voltage
11Air conditioner outputCompressor ONIO V to battery voltage
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FULL AUTO AIR CONDITIONER -Power Transistor, Belt Lock Controller55-57
POWER TRANSISTOR, BELT LOCK CONTROLLER
REMOVAL AND INSTALLATION
J?nPower transistor removal steps
1. Stopper
2. Glove box outer case assembly
3. Power transistor
2OFOO73Belt lock controller removal steps
M55LA- -
4. Under cover
5. Belt lock controller
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