Mitsubishi Lancer Evolution VI. Manual — part 115
HEATER AND MANUAL AIR CONDITIONER –
On-vehicle Service
55-12
Caution
(1) To connect the quick joint, press section “A” firmly
against the service valve until a click is heard.
(2) When connecting, run your hand along the hose
while pressing to ensure that there are no bends
in the hose.
5.
Start the engine.
6.
Set the blower switch to HI (Fast) position
7.
Set the A/C switch to ON position
8.
Set the temperature control to Max. cooling position
9.
Set the mode selection to Face position
10. Set the air selection to Recirculation position
11. Fix engine speed to 1,500 r/min.
12. Check that the high-pressure side pressure is 1,667 –
1,765 kPa.
NOTE
If the pressure is not within this range, adjust it as follows;
cool down the condenser using a cooling fan if the
pressure is higher, and cover the condenser to protect
it from ventilation air if it is lower.
13. Set a dry-bulb/wet-bulb thermometer at the air inlet, and
set a dry-bulb thermometer at the air outlet.
Caution
(1) Set the dry-bulb thermometer at a position where
the temperature sensing section can be directly
blown with cooled air.
(2) Place the dry-bulb/wet-bulb thermometer at a
position where it is not exposed to cooled air
blown out.
14. After the temperature of the air blown out from the air
outlet has been stabilized (10 – 15 minutes after starting),
read the dry-bulb thermometer set at the air outlet and
the wet-valve thermometer set at the air inlet.
15. The air conditioning system is considered in good
condition if the intersecting point of the measurements
obtained in Step (14) is below the performance evaluation
reference line on the graph.
Caution
Do not remove the quick joint immediately after the
performance test has been completed. Stop the engine
and wait until the high-pressure side pressure of the
gauge manifold has been lowered sufficiently.
Dry-bulb ther-
mometer
Dry-bulb/wet-bulb
thermometer
Reading of wet-bulb thermometer
set at air inlet (
°
C)
Performance
evaluation
reference line
In order
Not in order
0
Reading of dry-bulb
thermometer set at air outlet
(
°
C)
15
20
25
30
5
10
15
20
25
HEATER AND MANUAL AIR CONDITIONER –
On-vehicle Service
55-13
DUAL PRESSURE SWITCH SIMPLE CHECK
Measure the high-pressure side pressure. If there is a
continuity between the dual pressure switch terminals with
the dual pressure switch in ON condition as shown in the
graph at left, the switch is in good condition. If not, it is faulty.
Replace the switch.
POWER RELAY CHECK
BLOWER RELAY
Battery voltage
Terminal No.
1
3
2
5
Power is not supplied
Power is supplied
Dual pressure switch
ON
Pressure
196
±
20
221
2,354
±
196 2,942
±
196
OFF
kPa
Blower relay
HEATER AND MANUAL AIR CONDITIONER –
On-vehicle Service
55-14
A/C COMPRESSOR RELAY, CONDENSER FAN RELAY
Battery voltage
Terminal No.
1
3
4
5
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 CONDITIONER
55-15
HEATER CONTROL ASSEMBLY AND A/C SWITCH
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
D
Instrument Lower Panel and Heater Control Panel
Removal and Installation
D
Floor Console Assembly Removal and Installation
D
Foot Duct Removal and Installation
(Refer to P.55-31.)
3
4
1
2
5
Removal steps
A
A
" "
A
A
1. Heater control assembly
2. Rear window defogger switch
3. A/C switch
4. Knob
5. Blower switch
REMOVAL SERVICE POINT
A
A
"
HEATER 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
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