air condition MITSUBISHI LANCER EVOLUTION 2007 Service Repair Manual

HEATER, AIR CONDITIONER AND VENTILATION–On-vehicle Service55-22
BLOWER RELAY CONTINUITY CHECK
System voltageTerminal No.yg
1345
When current is
not supplied
When current is
supplied
A/C COMPRESSOR RELAY CONTINUITY CHECK
System voltageTerminal No.yg
3214
When current is
not supplied
When current is
supplied
Blower fan relay
Blower relay


A/C compressor relay

HEATER, AIR CONDITIONER AND VENTILATION–On-vehicle Service55-23
CONDENSER FAN RELAY (LO) CHECK
System voltageTerminal No.yg
2314
When current is
not supplied
When current is
supplied
CONDENSER FAN RELAY (HI) CHECK
System voltageTerminal No.yg
2314
When current is
not supplied
When current is
supplied
Condenser fan relay (LO)
Condenser fan relay (HI)

HEATER, AIR CONDITIONER AND VENTILATION–On-vehicle Service55-24
IDLE-UP OPERATION CHECK
1. Set the vehicle in the pre-inspection condition:
Engine coolant temperature: 80 – 90_C
Lamps, electric cooling fan and all accessories: OFF
2. Check that the idle speed is within the standard value.
Standard value: 850±50 r/min
NOTE
The idle speed is controlled by the ISC system and should
not be adjusted.
3. The idle speed should be within the standard value when
the A/C switch is turned on and the A/C is operating.
Standard value:
850±50 r/min

HeaterControlAssembly
(A/C-ECU) and A/C Switch HEATER, AIR CONDITIONER AND VENTILATION-55-25
HEATER CONTROL ASSEMBLY (A/C-ECU) AND A/C SWITCH
REMOVAL AND INSTALLATION
1
2
5
67 4
3
Removal steps
"BA1. Air mix door cable connection
"AA2. Blow vent switching damper cable con-
nection
3. Temperature adjustment knob4. Air volume adjustment knob
5. Blow vent switching knob
6. Center panel
7. Control panel assembly
INSTALLATION SERVICE POINTS
"AABLOW VENT SWITCHING DAMPER CABLE
CONNECTION
1. Set the heater control assembly’s blow vent switching
knob to the DEF position.
2. Set the heater unit’s blow vent switching damper lever
to the DEF position (turn the damper lever as the left
sketch.) and install the cable.
3. Set the I type postion of cable to the heater unit case
and secure with a clip.Mold locator
Blow vent
switching
damper lever
DEF position

Blow vent switching
damper lever

Mold locator
DEF position

HeaterControlAssembly
(A/C-ECU) and A/C Switch HEATER, AIR CONDITIONER AND VENTILATION-55-26
"BAAIR MIX DOOR CABLE CONNECTION
1. Turn the heater control assembly’s temperatureadjust-
ment knob all the way to the HOT side.
2. Set the heater unit’s air mix door lever to the MAX HOT
position (turn the damper lever as the left sketch.) and
attach the cable.
3. Set the I type postion of cable to the heater unit case
and secure with a clip.
INSPECTION
Blower switch continuity check
Switch positionTerminal no.p
12456
0 (OFF)
1
2
3
4
MAX.HOT
posirion
MAX.HOT
posirion
Air mix door cable
connection


MAX.COOL posirion
Air mix door lever
MAX.COOL
posirion
Mold locator
Mold locator

HeaterControlAssembly
(A/C-ECU) and A/C Switch HEATER, AIR CONDITIONER AND VENTILATION-55-27
DISASSEMBLY AND REASSEMBLY
1 2
5 67 8 3
4
Disassembly steps
1. Switch panel
2. Rear window defogger switch
3. Air conditioner switch
4. Inside/outside air changeover switch
AA"5. Blow vent changeover damper cableAA"6. Air mix damper cable
7. Blower switch assembly
8. Manual air conditioner control panel
(A/C-ECU)
ASSEMBLY SERVICE POINTS
AA"BLOW VENT CHANGEOVER DAMPER CABLE
AND AIR MIX DAMPER CABLE REMOVAL
Insert a flat-tipped screwdriver into the clip through the inside
of the control base and prise out the clip claw to disconnect
the cables.
Clip
claw
(–) flat-tipped
screwdriver

HEATER, AIR CONDITIONER AND VENTILATION-Heater Unit and Blower Assembly55-28
HEATER UNIT AND BLOWER ASSEMBLY
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operations
DRefrigerant Draining and Refilling (Refer to P.55-16, 19.)
DCoolant Draining and Refilling (Refer to GROUP 14 – On - vehicle Service.)
DInstrument Panel Removal and Installation (Refer to GROUP 52A – Instrument Panel.)
DFront Seat Removal and Installation (Refer to GROUP 52A – Front Seat.)
DFloor Console Removal and Installation (Refer to GROUP 52A – Floor Console.)
DFloor Carpet Removal and Installation
13
5 6
2
12±2 N·m
- Pipe coupling
O-ring
A/C compressor oil:
SUN PAG 56
4, 5
9
7
4
8
Heater unit and blower assembly
removal steps
1. Steering shaft attachment bolt
2. Front deck crossmember
3. Heater hose connection
AA"4. Suction pipe connectionAA"5. Liquid pipe B connection
6. Center duct
7. Heater unit
8. Intake duct
9. Blower assembly
REMOVAL SERVICE POINTS
AA"SUCTION PIPE AND LIQUID PIPE B
DISCONNECTION
To prevent the entry of dust or other foreign bodies, plug
the dismantled hose and the nipples of the expansion valves.
Caution
As the compressor oil and receiver are highly moisture
absorbent, use a non-porous material to plug the hose
and nipples.

HEATER, AIR CONDITIONER AND VENTILATION-Heater Unit and Blower Assembly55-29
DISASSEMBLY AND REASSEMBLY

3 7
1
65 4
89
10211
Disassembly steps
1. Right-hand foot duct
2. Left-hand foot duct
3. Evaporator cover
4. Heater core
5. Expansion valve
6. Expansion valve adapter7. Evaporator
8. Air thermo sensor clip
9. Air thermo sensor
10. Drain plug
11. Heater case

HEATER, AIR CONDITIONER AND VENTILATION-Heater Unit and Blower Assembly55-30

3
42
59
1
8 76
1011
12
Disassembly steps
1. Right-hand foot duct
2. Left-hand foot duct
3. Left-hand foot duct

4. Rear heater duct A upper LH

5. Evaporator cover6. Heater core
7. Expansion valve
8. Evaporator
9. Air thermo sensor clip
10. Air thermo sensor
11. Drain plug
12. Heater case

HEATER, AIR CONDITIONER AND VENTILATION-Heater Unit and Blower Assembly55-31
DISASSEMBLY AND REASSEMBLY
1 23
4
56
Disassembly steps
1. Joint duct
2. Resister
3. Inside/outside air changeover damper
motor4. Hose
5. Blower motor
6. Blower case