heater MITSUBISHI ECLIPSE 1991 User Guide

9-90ENGINE <2.0L DOHC Engine> - Cylinder Head Gasket
CYLINDER HEAD GASKETNOSJA-S2.5-3.5 Nm 19
3 4 K
REIVIOVAL AND INSTALLATION2-3 ft.lbs.\ I i-6
Pre-removal Operation*Eliminating Fuel Pressure in Fuel20Line1\(Refer to GROUP 14-Service Ad-justment Procedures.)eDraining of Engine Coolant(Refer to GROUP 7-Service Adjust-
ment Procedures.)
,,vs4-6 Nm
’
II28
2936’
/w,=
3i38OlAO5.69
Removal stepsl
1. Connection for accelerator cable orthrottle cable
2. Connection for accelerator cable (Auto-
cruise control)3. Connection for oxygen sensor
temperature sensor
5. Connection for engine coolant
temperature gauge unit6. Connection for engine coolant
7. Connection for crank angle sensor
8. Connection for TPS
ISC and idle switch
10. Connection for fuel injector
12. Connection for power transistor
13. Connection for knock sensor (Turbo)
14. Connection for EGR temperature sensor
(California vehicles only)
15. Connection for ground cable
+e l + 17. Connection for radiator upper hose
/\05ADl9019. Center cover
20. Connection for spark plug cable assembly
21. Connection for air intake hose (Turbo)
22. Connection for breather hose (Turbo)
23.Airintakehose24. Connection for breather hose+e l 25. Connection for fuel high pressure hose26. O-ring
27. Connection for vacuum hoses
28. Connection for heater hose
29. Connection for water by-pass hose
30. Connection for PCV hose
31. Connection for vacuum hose (Turbo)
32. Connection for water hose (Turbo)
33. Eye-bolt (Turbo)
34. Gasket (Turbo)
35. Connection for oil pipe (Turbo)
36. Connection for vacuum hoses (Turbo)
37. Connection for fuel return hose
38. Connection for brake booster vacuum
hoseA
NOTE(1) Reverse the removal procedures to reinstall.(2) +I) : Refer to “Service Points of Removal”.
(3) ~~ : Refer to “Service Points of Installation”.
(4) m : Non-reusable parts

INTAKE AND EXHAUST - Intake Manifold < 1.8L Engine>
INTAKE MANIFOLD < 1.8L Engine>
.- REMOVAL AND INSTALLATION
11-13NllMA-A.-
. .
4-6 Nmpy---- 3-4 ft.lbs.
B05A0132
Removal steps
1. Air intake hose2. Connection for accelerator cable
4, l + 3. Connection for radiator upper hose
4. Connection for overflow tube5. Connection for water by-pass hose6. Water hose
7. Connection for heater hose8. Connection for brake booster vacuum hose9. Connection for fuel high pressure hose10. O-ring
11. Connection for fuel return hose12. Connection for vacuum hoses
13. Vacuum pipe14. PCV hose
15. Connection for control harness
IO-12 Nm7-9 ft.lbs.
OlA0565
Post-installation Operation
NfJTF*Filling of Engine Coolant
(Refer to GROUP O-Maintenance
Service.)aAdjustment of Accelerator Cable
(Refer to GROUP 14-Service Ad-
justment Procedures.)*Inspection of Fuel Pressure
(Refer to GROUP 14-Service Ad-
justment Procedures.)
I.” IL(1) Reverse the removal procedures to reinstall.(2) +* : Refer to “Service Points of Removal”.(3) l * : Refer to “Service Points of Installation”.
(4) q : Non-reusable parts

23-80BODY - Instrument Panel
REMOVAL AND INSTALLATION
-?7
Removal steps
1. Plug2. Knee protecter assembly
3. Hood lock release handle
4. Column cover lower
5. Column cover upper
6. Cover
(A)7. Cluster panel assembly (A)8. Radio panel9. Radio or radio and tape player
10. Center air outlet assembly
11. Dial knob (A)12. Cluster panel assembly (B)13. Stopper
14. Glove box assembly
Nm6-9 ft.lk.15. Combination meter
16. Speedometer cable adapter
17. Speaker garnishes18. Bracket
19. Heater control assembly installation
screws
20. Lap cooler duct
21. Shower duct (L.H.122. Steering shaft mounting bolt(s)23. Instrument panel mounting screws
24. Instrument panel mounting bolts
25. Instrument panel assembly
NOTE(1) Reverse the removal procedures to reinstall.(2) l * : Refer to “Service Points of Removal”

23-82BODY - Instrument Panel
9N23
Cluster panel (A) disassembly steps
1. Switch holder (A)2. Headlight pop-up switch
3. Plug
(A)4. Rheostat
5. Cluster panel
(A)
Cluster panel (B) disassembly steps6. Switch holder
(5)7. Hazard switch
8.
p;Fr window defogger switch or plug
9.
$far wiper and washer switch or plug10. Heater control panel assembly
II. Cluster panel (B)
Knee protector disassembly steps12. Lap cooler grill assembly
13. Knee protector
Glove box disassembly steps14. Glove box lock assembly
15. Glove box pad
16. Glove box hinge
17. Glove box
Instrument panel disassembly steps18. Glove box light switch
19. Lower frame
20. Corner pad21. Glove box striker
22. Glove box light bracket
23. Speakers

24-l
HEATERS ANDAIR CONDITIONING
CONTENTSN24M--AIR CONDITIONER SWITCH
..........................30BLOWER ASSEMBLY
.....................................33
COMPRESSOR.................................................37CONDENSER AND CONDENSER FAN
MOTOR............................................................45ENGINE COOLANT TEMPERATURE
-‘-.,SWITCH............................................................51
EVAPORATOR.................................................
34
HEATERCONTROLASSEMBLY....................
26HEATER UNIT
.................................................31
REFRIGERANTLINE........................................47
RESISTOR........................................................29SAFETY PRECAUTIONS
.................................10SERVICE ADJUSTMENT PROCEDURES..
.....11Compressor Drive
Belt Adjustment
.............
23
CompressorNoise........................................24
Handling
TubingandFittings.......................22Idle-up
OperationCheck..............................25Manifold
GaugeSetInstallation..................11Performance Test
.........................................16Power Relay Check
......................................24Refrigerant Leak Repair Procedure
.............17
TestingSystemforLeaks...........................15Test Procedures
...........................................11
SPECIFICATIONS.............................................2
General Specifications..................................2
Lubricants......................................................3Sealant and Adhesives
.................................3Service Specifications
...................................2
TorqueSpecifications...................................2
TROUBLESHOOTING. . . ..a................................3
VENTILATORS(AIR INLET AND AIR OUTLET)
..,....s............. 50
VENTILATORS(INSTRUMENT PANEL)
..,...................*...........49

24-2HEATERS AND AIR CONDITIONING - Specifications
SPECIFICATIONS
GENERAL SPECIFICATIONSN24cA- -
ItemsSpecifications
Heater unit
TypeThree-way-flow full-air-mix system
Heater control switchDial type
Compressor
Model
lOPARefrigerant unit lubricantcc
(cu.in.1DENS0 OIL 6 or SUNISO 5GS80f20 (4.9&l .2)
V belt sizemm (in.)<1.8L Engine> 920 (36.2)<2.0L DOHC Engine> 940 (37.0)Dual pressure switch
High pressure switch
kPa (psi)OFF: 2,700 (384)ON: 2,100 (299)
Low pressure switch
kPa (psi)OFF: 210 (30)ON: 235 (33)
Freezer prevention“C (“F)Air temperature thermostat
OFF: 3 (37.4)ON: 4 (39.2)
Refrigerant and quantity
g bdR-12MAX 935 (33)
SERVICE SPECIFICATIONSN24CB.-
ItemsSpecifications
Standard valueAir
therm0 sensor and air inlet sensor standard
resistance value
n0°C (32°F)4,852f24315°C (59°F)2,341 f23425°C 177°F)1,500f 150Engine coolant temperature switch
Switch-OFF temperature
“C (“F) 112-118 (233-244)
Amount of
V belt deflection
mm (in.)
When new belt installed4-5
(.16-.2)When used belt installed5.5-6
(.22-.24)Amount of V-ribbed belt deflection
mm (in.)
When new belt installed4.5-5
(.18-.2)When used belt installed5.5-6
(.22-.24)
Clutch clearancemm (in.) 0.35-0.65 (.014-,026)
Condenser fan motor resistor resistance value
52 0.26-0.32
TORQUE SPECIFICATIONSN24CC-
ItemsNmft.lbs.Front housing installation bolt
24-2818-21
Compressor bracket tightening bolt
45-5533-39
Compressor tightening bolt
23-2717-19
Tension pulley center nut (bolt)
32-4824-36
Dual pressure switch
9-117-8
Engine coolant temperature switch
30-4022-28
k
- /.

HEATERS AND AIR CONDITIONING - Specifications/Troubleshooting24-3LUBRICANTS
u24as-
;xiItemsSpecified lubricantsQuantity
Each connection of refrigerant lineDENS0 OIL 6 or
SUNISO 5GSAs required
Shaft seal of the compressor
SEALANT AND ADHESIVES, Items
Engine coolant temperature switch threaded partSpecified sealant and adhesive
MOPAR Part No.4318034 or equivalentN24CE-
TROUBLESHOOTINGN24EBAQ
SymptomHeater insufficient heat
No ventilation even when
mode selection knob is
operatedBlower motor inoperative
Probable causeObstructed heater outlets
Blend air dampers improperly adjusted or bindingThermostat malfunction
Obstructed heater hoses
Improperly adjusted control cables
Plugged or partially plugged heater core
Incorrect adjustment of mode selection dampersIncorrect installation of mode selection control wire
Ducts are incorrectly/incompletely connected, crushed,
bent or clogged.
Poor grounding
Burnt-out fuseMalfunction blower switch
Malfunction resister
Malfunction blower motor
Malfunction heater relay
Remedy
Correct
ReplaceAdjust
Clean or replaceAdjust
Repair or replace
Correct
Replace

24-4HEATERS AND AIR CONDITIONING - Troubleshooting
TROUBLESHOOTING QUICK-REFERENCE TABLE
Compressor doesn’t operate.Air conditioner switch: ON
1
Can the activation sound of theYesThe compressor magnetic clutch
magnet clutch be heard when
- is normal. The compressor body is
battery voltage is applied to the airabnormal.
conditioner compressor magnet
clutch?
Is the voltage Bv between ground
and terminal
(4) of the airconditioner switch equivalent to
battery voltage when’the air
conditioner switch is pressed in
one step?
Is the voltage Bv between ground
and terminal
(2) of the airconditioner switch equivalent to
batten/ voltage when the air
conditioner switch is pressed in
two steps?
YesIs there continuity between
terminals (2) and (4) of the
magnetic clutch relay?
Is there continuity between
terminals (1) and (3) when Bv is
applied between terminals
(2) and
(4)?
L
i
I
Yes
Is the high-pressure siderefrigerant pressure within the
range of 21 O-2,700 kPa (29.9-
384 psi) when a gauge manifold
is connected to the service valve
and the high-pressure side
refrigerant pressure is measured?
/YesMalfunction of the air conditioner
switch.
Refer to P.24-6.
r
1!
\loMalfunction of the magnetic
clutch relay.
Gas leakage or excess refrigerant.Is there continuity between the
dual-pressure switch terminals?
No_ Malfunction of the dual-pressure
switch.
Yes
Continue to next page.

HEATERS AND AIR CONDITIONING - Troubleshooting24-5
From previoys page.
When the resistance of the air-
therm0 sensor is measured[with the air conditioner switch
OFF and when the ambient
temperature of the
air-therm0sensor is
25°C (77“F)], is the
measured resistance approx.
1.5f0.15 kP?
INoMalfunction of tha air-therm0Refer to P.24-6.-sensor.
Refer to P.24-6.
1Yes
When the resistance of the air-
inlet sensor is measured [with the
air conditioner switch OFF andwhen the ambient temperature of
the air-inlet sensor is 25°C (77”F)l
is the measured resistanceapprox.
1.5f0.15 k&2?I
1 Yes
Does idle-up occur immediatelyNo Malfunction of the DC motor
after the air conditioner switch is
cl800 Engine>
switched ON?Malfunction of the stepper motor
Yes~2000 DOHC Engine>
Malfunction of the MPI control unit
* Malfunction of the air conditioner
control unit.Refer to P.24-6.

24-6HEATERS AND AIR CONDITIONING - TroubleshootingAIR CONDITIONER CONTROL
UNIT CIRCUIT
1 Battery IBlower switch
litalAir conditioner
IAir inlet Air outlet1-isensorsensor
temperature
Corn- L Tpressor
relayI IMagnetic
AclutchMPI control*Wire harness sideDescription of Operation
(1) A negative-characteristic thermistor is employed
for the air-therm0 sensor and the air-inlet sensorin order to convert the ambient temperature at
the sensor part to resistance.
The sensor power-supply voltage
(5V) of the air
conditioner control unit is applied to each sen-
sor.
(2) The compressor operation mode changes (fromOFF to ECONO to A/C...) each time the air
conditioner switch is pressed. When the air
conditioner switch is pressed in to the first step,the mode is changed to the ECONO mode (the
indicator illuminates in orange, and the voltage
at terminal 4 of the air conditioner switch
becomes Bv.
When pressed in to the second step, the mode
is changed to the air conditioner mode (the
indicator illuminates in green), and the voltage at
terminal 2 of the air conditioner switch becomes
Bv.Bv: Battery voltage
(3) The output (terminal 4) of the air conditioner
control unit is output when all of the following
conditions are satisfied.
@ The air conditioner switch is ON (ECONO or
A/C mode).
@ The air-therm0 sensor ambient temperature
(evaporator outlet air temperature) is
4°C
(39°F) or higher.
@ The air-inlet sensor ambient temperature
(evaporator intake air temperature) is
4°C
(39°F) or higher.