2005 MITSUBISHI 380 Workshop Manual

HEATER UNIT, HEATER CORE, BLOWER ASSEMBLY AND EVAPORATOR UNIT
HEATER, AIR CONDITIONING AND VENTILATION55-156
BLOWER ASSEMBLY DISASSEMBLY AND ASSEMBLYM1551005500209
DISASSEMBLY STEPS
1. OUTSIDE/INSIDE AIR
SELECTION DAMPER CONTROL
MOTOR
2. POWER TRANSISTOR 3. BLOWER MOTOR
4. BLOWER CASE UPPER
5. BLOWER CASE LOWERDISASSEMBLY STEPS

MOTORS AND TRANSISTOR
HEATER, AIR CONDITIONING AND VENTILATION55-157
MOTORS AND TRANSISTOR
REMOVAL AND INSTALLATIONM1551006900028
MODE SELECTION DAMPER
CONTROL MOTOR REMOVAL
STEP
1. MODE SELECTION DAMPER
CONTROL MOTOR
POWER TRANSISTOR REMOVAL
STEP
GLOVE BOX ASSEMBLY,
INSTRUMENT CENTER PANEL
ASSEMBLY (REFER TO GROUP
52A, INSTRUMENT PANEL
P.52A-4).
2. POWER TRANSISTORBLOWER MOTOR REMOVAL
STEP
3. BLOWER MOTOR
OUTSIDE/INSIDE AIR
SELECTION DAMPER MOTOR
REMOVAL STEP
GLOVE BOX ASSEMBLY,
INSTRUMENT CENTER PANEL
ASSEMBLY (REFER TO GROUP
52A, INSTRUMENT PANEL
P.52A-4).
4. OUTSIDE/INSIDE AIR
SELECTION DAMPER MOTOR

MOTORS AND TRANSISTOR
HEATER, AIR CONDITIONING AND VENTILATION55-158
INSPECTIONM1551006300338.
MODE SELECTION DAMPER CONTROL MOTOR
CHECK
Do not apply battery voltage when the damper is in the
FACE or DEF position.
Check the mode selection damper control motor by the follow-
ing procedures.
.
POTENTIOMETER CHECK
While checking the mode selection damper control motor, mea-
sure the resistances between terminal numbers 3 and 5 and
between terminal numbers 3 and 7. At this time, the resis-
tances should change gradually within the standard value.
Standard value: 0.8 (DEF)
4.8 (FACE) k
.
OUTSIDE/INSIDE AIR SELECTION DAMPER
CONTROL MOTOR CHECK
Cut off the battery voltage when the damper is in the
inside/outside air position.
Check the outside/inside air selection damper control motor by
the following procedures.LEVER POSITION BATTERY
CONNECTIONLEVER
OPERATION
At the FACE
position
Connect
terminal 2 to the
positive battery
terminal
Connect
terminal 1 to the
negative battery
terminalThe lever moves
from the FACE
position to the DEF
position
At the DEF position
Connect
terminal 1 to the
positive battery
terminal
Connect
terminal 2 to the
negative battery
terminalThe lever moves
from the DEF
position to the
FACE position

MOTORS AND TRANSISTOR
HEATER, AIR CONDITIONING AND VENTILATION55-159
.
BLOWER FAN AND MOTOR CHECK
When battery voltage is applied between the terminals, check
that the motor operates. Also, check that there is no abnormal
noise.LEVER POSITION BATTERY
CONNECTIONLEVER
OPERATION
At the inside
position
Connect
terminal 1 to the
positive battery
terminal
Connect
terminal 7 to the
negative battery
terminalThe lever moves
from the outside
position to the
inside position
At the outside
position
Connect
terminal 1 to the
positive battery
terminal
Connect
terminal 5 to the
negative battery
terminalThe lever moves
from the inside
position to the
outside position

SENSORS
HEATER, AIR CONDITIONING AND VENTILATION55-160
SENSORS
REMOVAL AND INSTALLATIONM1554001900088
Required Special Tools:
: Diagnostic Tool (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface
(V.C.I.)
MB991827: MUT-III USB Cable
MB991910: MUT-III Main Harness A
INTERIOR TEMPERATURE
SENSOR REMOVAL STEPS
LOWER PANEL (REFER TO
GROUP 52A, INSTRUMENT
PA N E L P.52A-4).
1. INTERIOR TEMPERATURE
SENSOR
2. ASPIRATOR HOSEPHOTO SENSOR REMOVAL
STEPS
3. PHOTO SENSOR

SENSORS
HEATER, AIR CONDITIONING AND VENTILATION55-161
INSPECTIONM1554002000130.
INTERIOR TEMPERATURE SENSOR CHECK
When the resistance between the sensor terminals is mea-
sured under two or more temperature conditions, the resis-
tance should approximately satisfy the illustrated values.
NOTE:
The temperature conditions when checking should not
exceed the range shown in the diagram.
.
PHOTO SENSOR CHECK
1. Connect diagnostic tool , and check the data list of the
photo sensor. (Refer to P.55-133)
2. Check that the displayed value changes when you cover
the photo sensor with your hands.

AMBIENT TEMPERATURE SENSOR
HEATER, AIR CONDITIONING AND VENTILATION55-162
AMBIENT TEMPERATURE SENSOR
REMOVAL AND INSTALLATIONM1554003400108
REMOVAL SERVICE POINT
.
<> AMBIENT AIR TEMPERATURE SENSOR
REMOVAL
Insert a screwdriver into the mounting hole of the front bumper
core to release the clip, and remove the ambient temperature
sensor.
REMOVAL STEP
FRONT BUMPER ASSEMBLY
AND FRONT BUMPER CORE
(REFER TO GROUP 51, FRONT
BUMPER ASSEMBLY P.51-2).
<>1. AMBIENT AIR TEMPERATURE
SENSOR

AMBIENT TEMPERATURE SENSOR
HEATER, AIR CONDITIONING AND VENTILATION55-163
INSPECTIONM1551006300349.
AMBIENT AIR TEMPERATURE SENSOR CHECK
The ambient air temperature sensor should be checked
without removing it from bumper. If the sensor is removed,
damage will occur to clip rendering it unserviceable.
Measure the resistance between the sensor terminals under at
least two temperatures. The resistance values should meet the
values shown.
NOTE: The temperature should be within the shown range.