Mitsubishi Colt Ralliart. Manual — part 666
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-25
ACTUATOR TEST TABLE
M1554005200263
Item No.
Check items
Drive content
01
Blower motor: OFF
Stop
02
Blower motor: 8 speed
Middle speed
03
Blower motor: 16 speed
High speed
10
Air mixing damper control motor
Opening angle: Approximately 0% (MAX
COOL)
11
Opening angle: Approximately 50%
12
Open angle: Approximately 100% (MAX
COOL)
30
Outside/Inside air selection damper control
motor
Moved to recirculation-side
31
Moved to outside air-side
40
Rear defogger switch
OFF
41
ON
09*
Condenser fan
Stop
0B*
OPERATION
50*
Idle-up requirement
OFF
51*
Low-load
52*
High-load
NOTE: *: Drive at the engine operation
37
Outside/Inside air selection
switch
Ignition switch: ON
Display the outside/inside air
selection switch status
40
Abnormal low pressure
judgement
Ignition switch: ON
Displays the abnormal low
pressure judgement
41
Refrigerant leaks judgement Ignition switch: ON
Display the refrigerant leaks
judgement
42
DEF position flag
Ignition switch: ON
Display the DEF position flag
43
Forcible DEF position flag
Ignition switch: ON
Display the forcible DEF
position flag
44
Forcible DEF DRY flag
Ignition switch: ON
Display the forcible DEF DRY
flag
45
MAX COOL DRY flag
Ignition switch: ON
MAX COOL DRY flag status
46
MAX COOL recirculation
flag
Ignition switch: ON
Display the MAX COOL inside
air flag
47
MAX HOT A/C OFF flag
Ignition switch: ON
Display the MAX HOT A/C
OFF flag
48
MAX HOT fresh flag
Ignition switch: ON
Display the AX HOT outside
air flag
Item No.
Check items
Check contents
Main
Index
Group
TOC
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-26
CHECK AT THE COMBINATION METER
(METER AND A/C-ECU) TERMINALS
M1552010300851
AC206265
AE
35
34
252627
32
31
24
2223
33
29
21
30
36
28
52
49 50 51
44
43
45 46
48
47
41 42
20
19
18
17
7
6
15
14
4
3
1112 13
5
1
9 10
2
16
8
B-16
B-15
B-14
Terminal No.
Check items
Check conditions
Normal conditions
5
Air mixing damper
control motor and
potentiometer input
MAX HOT position
Approximately 4 V
MAX COOL position
Approximately 1 V
6
Photo sensor power
supply
Brightness 0 lux
4.9
− 5.1 V
Brightness 100000 lux or more
0 V
7
Interior temperature
sensor
Sensor probe temperature 25
°C
(4k
Ω)
2.1
− 2.7 V
8
A/C pressure sensor
input
Refer to
Refer to
9
Air thermo sensor
Sensor probe temperature 25
°C
(1.5k
Ω)
2.2 V
10
Ambient
temperature sensor
Sensor probe temperature 25
°C
(1.5k
Ω)
2.2 V
11
Air mixing damper
control motor (MAX
HOT)
When the damper flaps is moving to
the MAX COOL position.
0 V
When the damper flaps is moving to
the MAX HOT position.
System voltage
12
Blower relay input
IG2: ON
System voltage
13
Rear defogger relay IG2: ON
System voltage
14
Photo sensor earth
Always
0 V
15
Sensor earth
Always
0 V
Main
Index
Group
TOC
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-27
16
Outside/Inside air
selection damper
control motor
When the damper is moved to the
inside air recirculation position
0 V
When the damper is moved to the
fresh air position
System voltage
17
Outside/Inside air
selection damper
control motor
When the damper is moved to the
inside air recirculation position
System voltage
When the damper is moved to the
fresh air position
0 V
18
Air mixing damper
control motor (MAX
COOL)
When the damper flaps is moving to
the MAX HOT position.
0 V
When the damper flaps is moving to
the MAX COOL position.
System voltage
19
Power transistor
Maximum air volume
1 V
20
Power transistor
Maximum air volume
7.5 V
29
Heater control power
supply
IG2: ON
System voltage
31
Ignition switch (IG1)
power supply
IG1: ON
System voltage
32
Ignition switch (IG2)
power supply
IG2: ON
System voltage
33
Ignition switch (IG2)
power supply
Always
System voltage
34
A/C pressure sensor
earth
Always
0 V
35
Heater control earth Always
0 V
36
earth
Always
0 V
Terminal No.
Check items
Check conditions
Normal conditions
Main
Index
Group
TOC
ON-VEHICLE SERVICE
AUTOMATIC AIR CONDITIONER
55B-28
ON-VEHICLE SERVICE
IDLE-UP OPERATION CHECK
M1552001600832
1. Before inspection and adjustment, set vehicle in
the following condition:
• Engine coolant temperature: 80 − 90 °C
• Lamps, electric cooling fan and accessories: Set
to OFF
• Transmission: Neutral ("N" or "P" for vehicles with
A/T)
• Steering wheel: Straightforward
2. Check whether or not the idle speed is the
standard value.
(1) Refer to GROUP 11C, On-vehicle Service
−
Idle Speed Check
.
Standard value: 750
± 50 r/min
3. When the A/C is running after turning the A/C
switch to ON, and the blower switch to the 3(MH)
or 4(HI) position, check to be sure that the idle
speed is at the standard value.
Standard value: 850
± 100 r/min
NOTE: It is not necessary to make an adjustment,
because the idling speed is automatically
adjusted by the ISC system. If, however, a devia-
tion from the standard value occurs for some rea-
son, check the ISC system.
Main
Index
Group
TOC
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