sensor MITSUBISHI LANCER EVOLUTION 2007 Service Repair Manual

HEATER, AIR CONDITIONER AND VENTILATION-Troubleshooting55-13
Termi-
nal no.Normal state Check when Check item
9---
10Ignition switch (IG2) power supplyIgnition switch: ONBattery voltage
11Illumination earthAny time0V
12EarthAny time0V
13Air thermo sensorWhen temperature around sensor 25_C (1.5kΩ)2.2 V
14---
15---
16Air thermo sensor earthAny time0V
CHECK AT THE A/C-ECU TERMINAL
Termi-
nal no.Check itemCheck whenNormal state
1Engine-ECU output (A/C1)When A/C OFF0Vgp()
A/C switch: ON, blower: ON (room temperature)Battery voltage
2Engine-ECU output (A/C2)At A/C low loadBattery voltagegp()
At A/C high load0V
3EarthAny time0V
4Air thermo sensor earthAny time0V
5Illumination power supplyLighting switches: ONBattery voltage
6Air thermo sensorWhen temperature around sensor 25_C (1.5kΩ)2.2 V
7Ignition switch (IG2) power supplyIgnition switch: ONBattery voltage
8Blower switch (LO)Blower switch: LOBattery voltage
9Rear defogger switchDefogger switch: ON0Vgg
Defogger switch: OFFBattery voltage
10Inside/outside air changeover
dt(tidi)
When damper moved to inside circulation position0Vg
damper motor (outside air)When damper moved to outside air induction
positionBattery voltage
11Inside/outside air changeover
dt(i idi)
When damper moved to inside circulation positionBattery voltageg
damper motor (inside air)When damper moved to outside air induction
position0V
12Illumination earthAny time0V

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-Evaporator and Air Thermo Sensor55-34
EVAPORATOR AND AIR THERMO SENSOR
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operations
DRefrigerant Draining and Refilling (Refer to P.55-16, 19.)
1 2
3
4
56
7 8
12±2 N·m
- Pipe coupling
O-ring
A/C compressor oil:
SUN PAG 56
1, 2
9
Disassembly steps
DGlove box (Refer to GROUP 52A –
Instrument Panel.)
DEngine-ECU (Refer to GROUP 14.)
AA"1. Suction pipe connection
AA"2. Liquid pipe B connection
AA"3. Expansion valve4. Expansion valve adapter
5. Joint duct
6. Evaporator cover
AB""AA7. Evaporator
8. Air thermo sensor clip
9. Air thermo sensor
REMOVAL SERVICE POINTS
AA"WHEN DISCONNECTING THE SUCTION PIPE,
LIQUID PIPE B, AND THE EXPANSION VALVE
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-Evaporator, Air Thermo Sensor55-35
AB"EVAPORATOR REMOVAL

1. When removing the evaporator, cut and fold back the
dashboard pad as in the diagram. (The thickness of the
pad interferes with the removal of the evaporator.)
2. Remove the evaporator.
Caution:
Do not cut the upper side of the pad.
INSTALLATION SERVICE POINTS
"AAEVAPORATOR INSTALLATION
After installing the evaporator, glue the cut dashboard panel
pad with an adhesive agent.
INSPECTION
Air thermo sensor inspection
Measure the resistance between connector terminals 4 and
5 under at least two different temperatures. The resistance
values should generally match those in the graph.
NOTE
The temperature at the check should not exceed the range
in the graph.
Blower unit
Dashboard pad
Resistance
(kΩ)
Temperature(_C) 20
15
10
5
0
-10 0 1040
30
20
25