Mitsubishi Montero (2004+). Manual - part 621

BLOWER ASSEMBLY AND RESISTOR

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-127

BLOWER ASSEMBLY AND RESISTOR

REMOVAL AND INSTALLATION

M1551002800126

INSPECTION

M1551002900123

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.

ACX01452

2

1

AB

1.

BLOWER MOTOR

2.

RESISTOR

AC001038 AB

INSIDE/OUTSIDE AIR CHANGEOVER DAMPER MOTOR ASSEMBLY

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-128

RESISTOR CHECK

Use an ohmmeter to measure the resistance between the ter-
minals. Check that the measured value is at the standard 
value.

INSIDE/OUTSIDE AIR CHANGEOVER DAMPER MOTOR 

ASSEMBLY

REMOVAL AND INSTALLATION

M1551003400046

MEASUREMENT TERMINAL

STANDARD VALUE 

Ω

Between terminals 2 and 3 (LO) 2.79

Between terminals 1 and 2 (ML) 1.49

Between terminals 2 and 4 (MH) 0.36

AC002646

1 2

3 4

AB

AC001040AB

1

REMOVAL STEPS

•

GROVE BOX (REFER TO GROUP 52A, 
INSTRUMENT PANEL 

P.52A-3

.)

1. INSIDE/OUTSIDE AIR CHANGEOVER 

DAMPER MOTOR

INSIDE/OUTSIDE AIR CHANGEOVER DAMPER MOTOR ASSEMBLY

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-129

INSPECTION

M1551003500054

INSIDE/OUTSIDE AIR CHANGEOVER DAMPER 
MOTOR CHECK

CAUTION

Disconnect the battery negative terminal 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 CONNECTION

LEVER 
OPERATION

At the 
inside air 
position

• Connect terminal 1 to the 

positive battery terminal

• Connect terminal 2 to the 

negative battery terminal

The lever moves 
from the inside air 
position to the 
outside air position

At the 
outside air 
position

• Connect terminal 1 to the 

positive battery terminal

• Connect terminal 3 to the 

negative battery terminal

The lever moves 
from the outside air 
position to the 
inside air position

2 3

1

AC001041AB

OUTSIDE 
AIR

INSIDE AIR

SENSORS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-130

SENSORS

REMOVAL AND INSTALLATION

M1552007600056

INSPECTION

M1552007700042

AIR THERMO SENSOR CHECK

NOTE: The temperature conditions when checking should not 
exceed the range shown in the diagram.
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.

AC205083AB

1

2

REMOVAL STEPS

•

LOWER PANEL (REFER TO GROUP 
52A, INSTRUMENT PANEL 

P.52A-3

.)

1.

AIR THERMO SENSOR CLIP

2.

AUTOMATIC COMPRESSOR 
CONTROLLER AND AIR THERMO 
SENSOR

REMOVAL STEPS (Continued)

AC001043

RESISTANCE k

Ω

8

6

4

2

0

-10

0

 10

 20

 30

   40

TEMPERATURE ˚C(˚F)

AB

(14)

(32)

(50)

(86)

(104)

(68)