Mitsubishi Lancer (4A9 engine). Manual — part 313
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-6
45
In/out select damper
poten (target)
−
Displays outside/inside air
selection damper target
position.
46
In/out select damp
potentiometer
−
Displays outside/inside air
selection damper position.
55
Air outlet c/o
potentiometer
−
Displays air outlet
changeover damper
position.
56
Air outlet c/o potentio.
(Target)
−
Displays air outlet
changeover damper target
position.
57
Low pressure
−
Normal
60
Rear defogger switch
Rear window defogger switch ON
ON
Rear window defogger switch OFF
OFF
61
Pressure sensor
−
Displays refrigerant
pressure.
63
Air mix potentiometer
−
Displays the air mix damper
position.
68
Front blower fan
−
Displays blower motor
condition.
69
Front blower fan
(Target)
−
Displays blower motor target
value.
73
Refrigerant pressure
−
Displays refrigerant
pressure status.
74
Condenser fan
−
Displays condenser fan
running condition.
76
Temp. set dial position
−
Displays the set temperature
output value on the control
panel.
77
A/C Panel type
−
Dial/Auto/RHD
78
Fan set dial position
−
Displays the air volume
output value on the control
panel.
79
Air outlet c/o set dial
position
−
Displays output value to the
air outlet changeover dial on
the control panel.
80
Fan set dial operation
flag
−
ON when the air volume
adjusting dial is operated
81
A/C SW operation flag
−
ON when the air conditioner
switch is operated
82
Temp. set dial operation
flag
−
ON when the air conditioner
switch is operated
83
Defogger flag
−
ON when the air outlet
changeover dial is set to the
DEF position.
Item No.
Check item
Inspection status
The display contents
under normal condition
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-7
ACTUATOR TEST TABLE
M1554005201181
Item No.
Check item
Driven content
2
Idle up request*
Idle-up request signal
5
In/out selection damper
The moving position of outside/inside air selection
damper motor
6
Air mix damper motor
The moving position of air mix damper motor
7
Front blower fan
The amount of blower motor rotation
8
Air outlet c/o dumper
Air outlet changeover damper motor moving position
10
Cooling fan*
The amount of cooling fan rotation
11
Air conditioner*
A/C switch selection position
12
Rear defogger switch*
Rear window defogger switch selection position
NOTE: *: When the engine is not running these func-
tion do not work.
CHECK AT A/C-ECU TERMINALS
M1552010302653
32
24
29
21
31
30
2223
27
35
33
25
34
26
36
28
AC507400
<C-15>
<C-13>
AG
84
In/out air c/o SW
operation flag
−
ON when the inside air/
outside air changeover
switch is operated
87
Rear defogger SW
operation flag
−
ON when the rear window
switch is operated
88
Rear defogger SW lamp −
Displays rear window switch
indicator status.
89
A/C SW lamp
−
Displays air conditioner
switch indicator status.
90
In/out air c/o SW lamp
−
Displays the status of the
inside air/outside air
changeover switch indicator.
91
A/C Compressor drive
flag
−
ON when the compressor is
activated.
92
Wiper operation flag
−
ON when the wiper is
operated.
93
Ignition position
information
−
Ignition switch position
status
94
Power source voltage
−
Displays power supply
voltage.
95
IOD fuse equipment
flag
−
IOD fuse status
Item No.
Check item
Inspection status
The display contents
under normal condition
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-8
Terminal
No.
Check item
Check condition
Normal condition
1
Power transistor (DRAIN)
Air volume control dial: Maximum air
volume
0 to 2 V
2
Power transistor (GATE)
Air volume control dial: Maximum air
volume
System voltage
3
− 8
−
−
−
9
A/C control panel (Signal)
−
−
10
− 12
−
−
−
13
Battery power supply
Always
System voltage
14
Earth
Always
1 V or less
15
IG power supply
Ignition switch: ON
System voltage
16
A/C pressure sensor input
Refer to .
Refer to .
17
Interior temperature sensor
Sensor probe temperature: 25
°C
(4.0 k
Ω)
2.1 to 2.7 V
18
−
−
−
19
Sensor earth
Always
1 V or less
20
A/C pressure sensor power
supply
Ignition switch: IG2
5 V
21
Air thermo sensor earth
Always
1 V or less
22
Fin thermo sensor
Sensor probe temperature: 25
°C
(4.0 k
Ω)
2.1 to 2.7 V
23
−
−
−
24
Motor for air outside/inside
air circulation switching
damper
−
−
25
Motor for air outside/inside
air circulation switching
damper
−
−
26
Motor for air outside/inside
air circulation switching
damper
−
−
27
Motor for air outside/inside
air circulation switching
damper
−
−
28
Air mix damper motor
−
−
29
Motor power supply
−
−
30
Air outlet changeover
damper motor
−
−
31
Air outlet changeover
damper motor
−
−
32
Air outlet changeover
damper motor
−
−
33
Air outlet changeover
damper motor
−
−
INTERIOR TEMPERATURE SENSOR
AUTOMATIC AIR CONDITIONER
55B-9
INTERIOR TEMPERATURE SENSOR
REMOVAL AND INSTALLATION
M1554026400455
WARNING
For removal and installation of the Knee air bag module, always observe the service proce-
dures described in GROUP 52B, Knee air bag module .
AC709810
2
1
AH
A
A
Claw
1
AC704919
Instrument panel
Section A-A
Interior temperature sensor
removal steps
•
Knee air bag module (Refer to
GROUP 52B
− Knee air bag
module ).
1.
Aspirator hose
2.
Interior temperature sensor
34
Air mix damper motor
−
−
35
Air mix damper motor
−
−
36
Air mix damper motor
−
−
Terminal
No.
Check item
Check condition
Normal condition
Interior temperature sensor
removal steps (Continued)
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