Mitsubishi Grandis. Manual — part 331
MODE SELECTION DAMPER CONTROL MOTOR, AIR MIXING DAMPER CONTROL MOTOR, OUTSIDE/INSIDE
HEATER, AIR CONDITIONER AND VENTILATION
55-209
MOTOR CHECK
Potentiometer check
When the resistance value between connector
terminals 3 and 5 is measured while checking the
motor, check that the resistance value changes
gradually within the standard value.
Standard value: 1.7 (MAX HOT)
− 5.0 (MAX
COOL) k
Ω
CHECK THE OUTSIDE/INSIDE AIR
SELECTION DAMPER MOTOR
CAUTION
Stop energizing when the lever is set to the
operation stopping position.
FRONT BLOWER MOTOR CHECK
Check that the motor turns when applying battery
power between the connector terminals. Also check
to see that there is no abnormal sound emitted from
the motor at this time.
Battery
connection
(+) terminal
Battery
connection
(-) terminal
Lever operation
2
1
Rotate to the HOT
side.
1
2
Rotate to the
COOL side.
AC311449AB
1 2 3
Outside air
Inside air
Connectio
n (+)
terminal
Connecti
on (-)
terminal
Lever operation
1
2
The rotation stops at the
fresh air position
1
3
The rotation stops at the
air recirculation position
AC303108
2
1
PHOTO SENSOR AND INTERIOR TEMPERATURE SENSOR
HEATER, AIR CONDITIONER AND VENTILATION
55-210
PHOTO SENSOR AND INTERIOR TEMPERATURE SENSOR
REMOVAL AND INSTALLATION
M1554015100029
REMOVAL SERVICE POINTS
<<A>> PHOTO SENSOR REMOVAL
Cut the connector behind the combination meter
away and tie it with string so that the photo sensor
can be drawn out from the instrument panel easily.
AC310253
3
1
2
AB
Inside temperature sensor
removal steps
•
Cowl side trim (Refer to GROUP
52A, Interior Trim
•
Selector lever, selector lever panel
and instrument lower panel (Refer
to GROUP 52A, Instrument Panel
1.
Interior temperature sensor
2.
Aspirator hose
Photo sensor removal steps
•
Combination meter bezel,
combination meter (Refer to
GROUP 54A, Combination meter
•
Door opening trim, front pillar trim
(Refer to GROUP 52A,Interior Trim
•
Defroster garnish (Refer to GROUP
52A, Instrument Panel
<<A>>
3.
Photo sensor
AC311447AB
Photo sensor
String
AMBIENT TEMPERATURE SENSOR
HEATER, AIR CONDITIONER AND VENTILATION
55-211
INSPECTION
M1552014301395
INTERIOR TEMPERATURE SENSOR
CHECK
Check to see that the resistance shown in the graph
is almost satisfied when measuring the resistance
between the terminals under two or more different
temperature conditions.
PHOTO SENSOR CHECK
Check that the display voltage changes between in
direct sunlight and in doors when checking the
MUT-III service data item No.06.
AMBIENT TEMPERATURE SENSOR
REMOVAL AND INSTALLATION
M1554003400131
INSPECTION
M1552014301403
Check to see that the resistance shown in the graph
is almost satisfied when measuring the resistance
between the sensor terminals under two or more
different temperature conditions.
AC103488
20
15
10
5
0
-10 0
20
40
60
80
AB
Resis
tance
(k
Ω)
Temperature (˚C)
Removal steps
•
Front bumper (GROUP 51, Front
Bumper
1.
Ambient temperature sensor
AC302862 AB
1
AC209192AB
10
8
6
4
2
0
10
20
30
40
-10
0
RESISTANCE
(k
Ω)
TEMPERATURE (˚C)
HEAT SWITCH
HEATER, AIR CONDITIONER AND VENTILATION
55-212
HEAT SWITCH
REMOVAL AND INSTALLATION <REAR
HEATER OR REAR A/C VEHICLES>
M1554017000028
INSPECTION
M1554011900034
PTC HEATER SWITCH CONTINUITY
CHECK
AC311594AB
1
3
2
Removal steps
1.
Combination meter bezel (GROUP
52A, Instrument Panel
2.
Heat switch holder
3.
Heat switch (PTC heater switch)
Switch
position
Tester connection Specified
condition
OFF
1
− 2
Open circuit
ON
Less than 2 ohms
AC303103
1 2 3
4 5 6
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