MITSUBISHI TRITON 1997 Workshop Manual

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EA R W IN DO W D EFO GGER S W IT C H 54300620085
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55-2
Vacuum Actuator Check <Diesel-powered
Vehicles> 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Idle-up Solenoid Valve Check <Diesel-powered
Vehicles> 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lever Position Switch Check <Diesel-powered
Vehicles (A/T)> 20. . . . . . . . . . . . . . . . . . . . . . . . . .
HEATER CONTROL ASSEMBLY AND A/C
SWITCH 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HEATER UNIT AND HEATER CORE* 24. . . .
BLOWER ASSEMBLY AND RESISTOR
26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EVAPORATOR <VEHICLES WITH A/C>
28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . COMPRESSOR AND TENSION
PULLEY* 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONDENSER AND CONDENSER FAN
MOTOR 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REFRIGERANT LINE* 35. . . . . . . . . . . . . . . . . . .
ENGINE COOLANT TEMPERATURE
SWITCH <Diesel-powered Vehicles> 37. . . .
IDLE-UP SYSTEM <Diesel-powered
Vehicles> 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LEVER POSITION SWITCH
<Diesel-powered Vehicles (A/T)> 40. . . . . . . .
VENTILATORS* 41. . . . . . . . . . . . . . . . . . . . . . . . .

± General Information HEATER, AIR CONDITIONER
AND VENTILATION55-3
GENERAL INFORMATION55200010121
The heater system uses a two-way-flow full-air-mix
system that features high performance and low
operating noise, and includes an independent face
air blowing function and a cool air bypass function.The A/C system is basically the same as the
conventional system, but a new refrigerant system
has been adopted as a response to restrictions
on the use of chlorofluorocarbons.
ItemsSpecifications
Heater unitTypeTwo-way-flow full-air-mix system
Heater control assemblyDial type
CompressorModelInclined-plate type <DKS-15CH>
Dual pressure switch
kPa
High-pressure switchON
OFF: 2,648, OF
F ON: 2,059
kPa
Low-pressure switchON
OFF: 177, OFF
ON: 186
Refrigerant and quantity gR-134a (HFC-134a), Approx. 550 ± 600
SAFETY PRECAUTIONS
Because R-134a refrigerant is a hydrofluorocarbon
(HFC) which contains hydrogen atoms in place of
chlorine atoms, it will not cause damage to the
ozone layer.
Refrigerant R-134a is transparent and colourless
in both the liquid and vapour state. Since it has
a boiling point of ± 29.8
C, at atmospheric pressure,
it will be a vapour at all normal temperatures and
pressures. The vapour is heavier than air,
non-flammable, and nonexplosive. The following
precautions must be observed when handling
R-134a.Caution
Wear safety goggles when servicing the
refrigeration system.
R-134a evaporates so rapidly at normal
atmospheric pressures and temperatures that it
tends to freeze anything it contacts. For this reason,
extreme care must be taken to prevent any liquid
refrigerant from contacting the skin and especially
the eyes. Always wear safety goggles when
servicing the refrigeration part of the A/C system.
Keep a bottle of sterile mineral oil handy when
working on the refrigeration system. Should any
liquid refrigerant get into the eyes, use a few drops
of mineral oil to wash them out. R-134a is rapidly
absorbed by the oil. Next splash the eyes with
plenty of cold water. Call your doctor immediately
even though irritation has ceased after treatment.

General Information/Service Specifications/
Lubricants/Sealant HEATER, AIR CONDITIONER
AND VENTILATION ±55-4
Caution
Do not heat R-134a above 40
C
In most instances, moderate heat is required to
bring the pressure of the refrigerant in its container
above the pressure of the system when charging
or adding refrigerant.
A bucket or large pan of hot water not over 40
C
is all the heat required for this purpose. Do not
heat the refrigerant container with a blow torch
or any other means that would raise temperature
and pressure above this temperature. Do not weld
or steam clean on or near the system components
or refrigerant lines.
Caution
Keep R-134a containers upright when charging
the system.When metering R-134a into the refrigeration system
keep the supply tank or cans in an upright position.
If the refrigerant container is on its side or upside
down, liquid refrigerant will enter the system and
damage the compressor.
Caution
1. The leak detector for R-134a should be used
to check for refrigerant gas leaks.
2. Do not allow liquid refrigerant to touch bright
metal.
Refrigerant will tarnish bright metal and chrome
surfaces, and in combination with moisture can
severely corrode all metal surfaces.
SERVICE SPECIFICATIONS55200030141
ItemsStandard value
Idle speed r/min4G6750+100
4D5750+100
Idle up speed r/min900+50
Resistor (for blower motor) <L.H. drive vehicles> WLO: 2.21, ML: 0.97, MH: 0.35
Resistor (for blower motor) <R.H. drive vehicles> WLO: 2.81, ML: 1.28, MH: 0.33
Air gap (Magnetic clutch) mm0.3 ± 0.6
Engine coolant tempera-
ture switch (for A/C cut-off)
ON (continuity)108 or less
ture switch (for A/C cut-off)
<4D5> C
OFF (no continuity)115 or more
Engine coolant tempera-
ture switch (for condenser
ON (continuity)102 or more
ture switch (for condenser
fan) <4D5> C
OFF (no continuity)97 or less
LUBRICANTS55200040137
ItemsSpecified lubricantsQuantity
Each connection of refrigerant lineZXL100PGAs required
Compressor refrigerant unit lubricant m
ZXL100PG180
SEALANT55200050048
ItemSpecified sealantRemark
Engine coolant temperature switch threaded
part3M Nut Locking Part No. 4171 or equivalentDrying sealant

S
PEC IA L T O OL 55100060017
T o ol N
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ro ble m c a use R
em edy R
efe re nce
p age W
hen th e ig nit io n s
w it c h is O
N A
/C c o m pre sso r r e la y is d efe ctiv e R
epla ce A /C c o m pre sso r r e la y 5
5-1 6 s
w i
t h i ª
O Nº t M
agnetic c lu tc h is d efe ctiv e R
epla ce th e A /C c o m pre sso r 5
5-6 , 3 0 o
pera te . R
efr ig era nt le ak o r o ve rfillin g o f r e fr ig era nt R
eple nis h th e r e fr ig era nt, r e -
p air th e le ak o r ta ke o ut s o m e o f
t h e r e fr ig era nt 5
5-6 , 1 4 D
ual p re ssu re s w it c h is d efe ctiv e R
epla ce th e d ual p re ssu re
s w it c h 5
5-7 , 3 5 A
/C s w it c h is d efe ctiv e R
epla ce th e A /C s w it c h 5
5-2 1, 2 3 B
lo w er s w it c h is d efe ctiv e R
epla ce th e b lo w er s w it c h 5
5-2 1, 2 3 T
herm osta t is d efe ctiv e R
epla ce th e T herm osta t 5
5-2 9 E
ngin e c o ola nt te m pera tu re s w it c h ( fo r A /C
c u t- o ff ) is d efe ctiv e < D ie se l- p ow ere d v e -
h ic le s> R
epla ce th e e ngin e c o ola nt
t e m pera tu re s w it c h 5
5-3 7, 3 8 E
ngin e-E C U is d efe ctiv e < P etr o l- p ow ere d
v e hic le s> R
epla ce th e e ngin e-E C U ±
W
hen th e A /C is
o pera tin g, te m -
p era tu re in sid e R
efr ig era nt le ak R
eple nis h th e r e fr ig era nt a nd
r e pair th e le ak 5
5-1 4 t
h e p asse nger
c o m partm ent
d oesn 't d ecre ase (
lii t D
ual p re ssu re s w it c h is d efe ctiv e R
epla ce th e d ual p re ssu re
s w it c h 5
5-7 , 3 5 (
c o ol a ir is n ot
e m it te d). T
herm osta t is d efe ctiv e R
epla ce th e T herm osta t 5
5-2 9

B
lo w er fa n a nd m
oto r doesn t B
lo w er r e la y is d efe ctiv e R
epla ce th e b lo w er r e la y 5
5-1 5 m
o t d '
t B
lo w er fa n a nd m oto r is d efe ctiv e R
epla ce th e b lo w er fa n a nd
m oto r 5
5-2 6, 2 7 B
lo w er r e sis to r is d efe ctiv e R
epla ce th e b lo w er r e sis to r 5
5-2 6, 2 7 B
lo w er s w it c h is d efe ctiv e R
epla ce th e b lo w er s w it c h 5
5-2 1, 2 3 B
lo w er fa n a nd
m oto r d oesn 't s
to t
u rn in g S
hort c ir c u it o f th e h arn ess b etw een th e b lo w er
f a n a nd m oto r a nd th e b lo w er s w it c h R
epair th e h arn ess ±
s t t i
B
lo w er s w it c h is d efe ctiv e R
epla ce th e b lo w er s w it c h 5
5-2 1, 2 3 W
hen th e A /C is
o pera tin g c o n- d
ense r fa n does C
ondense r fa n m oto r is d efe ctiv e R
epla ce th e c o ndense r fa n
m oto r 5
5-3 3, 3 4 d f d
C
ondense r fa n r e la y is d efe ctiv e R
epla ce th e c o ndense r fa n
r e la y 5
5-1 6

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