Mitsubishi Montero (2004+). Manual — part 665

HEATER UNIT

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-149

DISASSEMBLY AND REASSEMBLY

M1554009200083

ASSEMBLY SERVICE POINT

.

>>A<< HEATER WATER TEMPERATURE SENSOR/HEATER
WATER TEMPERATURE SENSOR CLIP INSTALLATION
Insert the heater water temperature sensor into the mounting
hole on the heater unit, and secure the sensor with the clip.

AC205222

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

N

N

N

AB

DISASSEMBLY STEPS

1.

FOOT DUCT A

2.

FOOT DUCT C

3.

AIR THERMO SENSOR CLIP

4.

AIR THERMO SENSOR

>>A<<

5.

HEATER WATER TEMPERATURE
SENSOR CLIP

>>A<<

6.

HEATER WATER TEMPERATURE
SENSOR

7.

MODE SELECTION DAMPER
CONTROL MOTOR

8.

AIR MIXING DAMPER CONTROL
MOTOR

9.

ASPIRATOR HOSE

10. HEATER BLOWER CONTROLLER

UNIT

11. REAR COOLER CONTROL UNIT

OR REAR A/C CONTROL UNIT

12. JOINT DUCT
13. AIR DUCT SUBASSEMBLY
14. HEATER CORE
15. FRONT PIPE ASSEMBLY
16. EXPANSION VALVE
17. PIPE
18. EVAPORATOR
19. CASE

DISASSEMBLY STEPS

HEATER BLOWER CONTROLLER UNIT

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-150

HEATER BLOWER CONTROLLER UNIT

REMOVAL AND INSTALLATION

M1554009400010

INSPECTION

M1554009500017

BLOWER LINER CONTROLLER

When the connector is connected and the ignition switch is
turned ON, the voltage at terminal 2 should be as follows:

AC101450

BLOWER LINER
CONTROLLER

AB

BLOWER SWITCH POSITION

VOLTAGE AT TERMINAL
No. 2 V

LOW SPEED

4.0

MEDIUM SPEED

7.9

HIGH SPEED

13.7

ACX00825AC

DAMPER CONTROL MOTOR ASSEMBLY

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-151

DAMPER CONTROL MOTOR ASSEMBLY

REMOVAL AND INSTALLATION

M1554001600032

INSPECTION

M1554001700051

.

AIR MIX DAMPER CONTROL MOTOR CHECK

CAUTION

Do not apply battery voltage when the damper is in the
MAX COOL or MAX HOT position.
Check the air mix damper control motor by the following proce-
dures.

ACX01447

1

2

REMOVAL STEPS

•

UNDER COVER (REFER TO
GROUP 52A, INSTRUMENT
PANEL

P.52A-3

.)

1.

AIR MIX DAMPER MOTOR

2.

AIR OUTLET CHANGEOVER
DAMPER MOTOR

REMOVAL STEPS (Continued)

ACX01456

MAX HOT
POSITION

MAX COOL
POSITION

AB

DAMPER CONTROL MOTOR ASSEMBLY

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-152

.

POTENTIOMETER CHECK
While checking the air mix damper control motor, measure the
resistances between terminals numbers 3 and 5 as well as
numbers 3 and 7. At this time, the resistances should change
gradually within the standard value.

Standard value: 1.2

− 4.8 k

.

MODE SELECTION DAMPER CONTROL MOTOR CHECK

CAUTION

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 as well
as terminal numbers 3 and 7. At this time, the resistances
should change gradually within the standard value.

Standard value: 0.96

− 5.76 kΩ

LEVER
POSITION

BATTERY
CONNECTION

LEVER
OPERATION

At the MAX
COOL position

• Connect terminal 1

to the positive
battery terminal

• Connect terminal 2

to the negative
battery terminal

The lever moves
from the MAX
COOL position to
the outside position

At the MAX
HOT position

• Connect terminal 2

to the positive
battery terminal

• Connect terminal 1

to the negative
battery terminal

The lever moves
from the MAX HOT
position to the
inside position

LEVER
POSITION

BATTERY
CONNECTION

LEVER
OPERATION

At the DEF
position

• Connect terminal 1

to the positive
battery terminal

• Connect terminal 2

to the negative
battery terminal

The lever moves
from the DEF
position to the
outside position

At the FACE
position

• Connect terminal 2

to the positive
battery terminal

• Connect terminal 1

to the negative
battery terminal

The lever moves
from the FACE
position to the
inside position

ACX01457

FACE POSITION

DEF POSITION

AB