heater MITSUBISHI LANCER EVOLUTION VI 1999 Owner's Manual

HEATER AND MANUAL AIR CONDITIONER – On-vehicle Service55-14
A/C COMPRESSOR RELAY, CONDENSER FAN RELAY
Battery voltageTerminal No.
1345
Power is not supplied
Power is supplied
IDLE-UP OPERATION CHECK
1. Before inspection and adjustment, set vehicle in the
pre-inspection condition:
2. Check whether or not the idle speed is the standard value.
Standard value: 700 ± 50 r/min
NOTE
There is no necessity to make an adjustment, because
the idle speed is automatically adjusted by the ISC system.
If, however, there occurs a deviation from the standard
value for some reason, check the fuel control system.
3. When the A/C is running after turning the A/C switch
to ON, check to be sure that the idle speed is at the
standard value.
Standard value: 850 ± 50 r/min
Fan control relay
Compressor
relay
Radiator
fan relay
Condenser
fan relay

– Heater Control Assembly and A/C Switch HEATER AND MANUAL
AIR CONDITIONER55-15
HEATER CONTROL ASSEMBLY AND A/C SWITCH
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation

Instrument Lower Panel and Heater Control Panel
Removal and Installation

Floor Console Assembly Removal and Installation

Foot Duct Removal and Installation
(Refer to P.55-31.)
3 4
1
2 5
Removal steps
AA1. Heater control assembly
2. Rear window defogger switch
3. A/C switch
4. Knob
5. Blower switch
REMOVAL SERVICE POINT
AHEATER CONTROL ASSEMBLY REMOVAL
1. Remove the heater control assembly mounting screws.
2. Bend the clamp and the bosses (2 each side), which
are inserted into the centre reinforcement.
3. Remove the heater control assembly.
Clamp
Boss
Boss

– Heater Control Assembly and A/C Switch HEATER AND MANUAL
AIR CONDITIONER55-16
INSTALLATION SERVICE POINT
AHEATER CONTROL ASSEMBLY INSTALLATION
1. Cut off the bosses and clamp shown before installing
a new heater control assembly.
2. Install the heater control assembly mounting screws.
3. Follow the steps below to install the air outlet changeover
damper lever cable.
(1) Set the air outlet changeover link of the heater unit
to the DEF position.
(2) Set the air outlet changeover control knob on the
heater control assembly to the DEF position.
(3) After inserting the inner cable into the link, pull the
outer cable to the heater control assembly side and
then fasten the outer cable to the clip of the heater
unit.
(4) After installation, operate the heater control knob to
check if the mode changeover can be accomplished
smoothly.
4. Follow the steps below to install the air mix damper lever
cable.
(1) Set the air mix damper link on the heater unit to
the MAX HOT position.
(2) Set the air mix damper knob of the heater control
assembly to the MAX HOT position.
(3) After inserting the inner cable into the link, pull the
outer cable to the heater control assembly side and
then fasten the outer cable to the clip of the heater
unit.
(4) After installation, operate the heater control knob to
check if the air mix damper can be actuated smoothly.
Clamp
Boss
Boss
DEF
position
MAX HOT position

– Heater Control Assembly and A/C Switch HEATER AND MANUAL
AIR CONDITIONER55-17
5. Follow the steps below to install the inside/outside air
changeover damper lever cable.
(1) Set the inside/outside air changeover damper link
on the blower unit to the INSIDE position.
(2) Set the inside/outside air changeover damper knob
of the heater control assembly to the INSIDE position.
(3) After inserting the inner cable into the link, pull the
outer cable to the heater control assembly side and
then fasten the outer cable to the clip of the blower
unit.
(4) After installation, ensure that inside/outside air
changeover damper operates smoothly by operating
the heater control assembly knob.
INSPECTION
A/C SWITCH CONTINUITY CHECK
Switch
iti
Terminal No.
position1ILL2IND457
OFF
ON
BLOWER SWITCH CONTINUITY CHECK
Switch positionTerminal No.
1235678
OFF

(LO)

(ML)

(MH)

(HI)
INSIDE position
Push
OFFON

– Heater Unit and Blower Unit HEATER AND MANUAL
AIR CONDITIONER55-18
HEATER UNIT AND BLOWER UNIT
<VEHICLES WITHOUT AIR CONDITIONER>
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation

Engine Coolant Draining and Refilling

Air Cleaner Cover and Hose Removal and
Installation

Floor Console and Instrument Panel Removal and
Installation

Rear Seat Heater Duct Removal and Installation
<Vehicles for cold regions> (Refer to P.55-31.)
1
34
5
6
2 7 8
9 1011
Removal steps
1. Center reinforcement RH
2. Heater control assembly
3. Center reinforcement LH
4. Center ventilation duct
5. Foot distribution duct
6. Joint duct7. Blower unit
8. Heater hose
9. Heater unit
10. Heater core support
11. Heater core

– Heater Unit, Cooling and Blower Unit HEATER AND MANUAL
AIR CONDITIONER55-19
HEATER UNIT, COOLING AND BLOWER UNIT
<VEHICLES WITH AIR CONDITIONER>
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation

Engine Coolant Draining and Refilling

Discharging and Charging of Refrigerant
(Refer to P.55-6.)

Air Cleaner Cover and Hose Removal and
Installation

Floor Console and Instrument Panel Removal and
Installation

Rear Seat Heater Duct Removal and Installation
<Vehicles for cold regions> (Refer to P.55-31.)
1
34
5 6
2 7
8 9
10 1112
Piping connection
O-ring
A/C Compressor oil: SUN PAG 56
Removal steps
1. Center reinforcement RH
2. Heater control assembly
3. Center reinforcement LH
4. Center ventilation duct
5. Foot distribution duct
6. Drain hose
A7. Connection between cooling unit
and refrigerant line8. Cooling and blower unit
9. Heater hose
10. Heater unit
11. Heater core support
12. Heater core
REMOVAL SERVICE POINT
AREMOVAL OF REFRIGERANT LINE FROM
COOLING UNIT
Plug the open end of the removed hose and the opening
in the cooling unit to prevent entry of dust and foreign
substances.
Caution
Compressor oil and the receiver are highly
moisture-absorptive.
Do not use plugs allowing ventilation.

– Blower Motor Assembly, Resistor and Evaporator HEATER AND MANUAL
AIR CONDITIONER55-20
BLOWER MOTOR ASSEMBLY, RESISTOR AND EVAPORATOR
REMOVAL AND INSTALLATION
4
6 2
1 5
3
7
Piping connection
O-ring
A/C Compressor oil: SUN PAG 56
Blower motor assembly removal
steps
1. Under cover
<Vehicles for cold regions>
2. Blower motor assembly
Resistor removal steps
1. Under cover
<Vehicles for cold regions>

Glove box, glove box frame
3. ResistorEvaporator removal steps
<Vehicles with A/C>

Discharging and Charging of
refrigerant (Refer to P.55-6.)

Glove box, glove box frame
4. Drain hose
A5. Connection between evaporator
and refrigerant line
B6. Case cover
B7. Evaporator
REMOVAL SERVICE POINT
AREMOVAL OF REFRIGERANT LINE FROM
EVAPORATOR
Plug the open end of the removed hose and the opening
in the evaporator to prevent entry of dust and foreign
substances.
Caution
Compressor oil and the receiver are highly
moisture-absorptive.
Do not use plugs allowing ventilation.

– Blower Motor Assembly, Resistor and Evaporator HEATER AND MANUAL
AIR CONDITIONER55-21
BCASE COVER, EVAPORATOR REMOVAL
The evaporator, which has been installed in a factory, has
no case cover. Follow the steps below to remove that
evaporator.
1. Cut the case along the shown line to remove the cooling
and blower unit.
2. Remove the air thermo sensor from the evaporator, and
then remove the evaporator towards you, being careful
not to damage its core.
INSPECTION
BLOWER MOTOR CHECK
When battery voltage is applied between the terminals, check
that the motor operates. Also, check that there is no abnormal
noise.
RESISTOR CHECK
Use a circuit tester to measure the resistance between the
terminals as indicated below. Check that the measured value
is at the standard value.
Standard value:
Measurement terminalStandard value Ω
Between terminals 3 and 22.81 ± 10%
Between terminals 3 and 41.28 ± 10%
Between terminals 3 and 10.33 ± 10%
Cut line
Evaporator

– Blower Motor Assembly, Resistor and Evaporator HEATER AND MANUAL
AIR CONDITIONER55-22
AIR THERMO-SENSOR CHECK
Measure the resistance between the sensor terminals in two
or more different temperature conditions. The resistance
values must conform to the values shown in the graph.
NOTE
The temperatures at checking must be within the range shown
in the characteristic curve.kΩ
Temperature
Resistance
°C 0
–10 0 10 20 30 40 5 10 15 20

– Compressor and Tension Pulley HEATER AND MANUAL
AIR CONDITIONER55-23
COMPRESSOR AND TENSION PULLEY
REMOVAL AND INSTALLATION
Pre-removal Operation

Discharging of Refrigerant (Refer to P.55-6.)Post-installation Operation

Drive Belt Tension Adjustment

Charging of Refrigerant (Refer to P.55-6.)
4
2
1 53
Piping connection
O-ring
A/C Compressor oil: SUN PAG 56
59 – 69 Nm
Removal steps
A1. Drive belt
2. Idler pulley
B3. Suction hose and discharge hose
connection
CA4. Compressor
5. Compressor bracket