Mitsubishi Montero (2002-2004). Manual - part 112

A/C CONTROL PANEL AND A/C CONTROL UNIT

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-141

INSIDE/OUTSIDE AIR CHANGEOVER SWITCH
There should be continuity between terminals 8 and 13 while 
the switch is pushed.

.

A/C SWITCH
There should be continuity between terminals 10 and 13 while 
the switch is pushed.

.

AC205403

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

AG

AC205403

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

AF

A/C CONTROL PANEL AND A/C CONTROL UNIT

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-142

REAR WINDOW DEFOGGER SWITCH
There should be continuity between terminals 6 and 13 while 
the switch is pushed.

AC205403

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

AE

HEATER UNIT

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-143

HEATER UNIT

REMOVAL AND INSTALLATION

M1554009100053

The removal and installation of the heater unit is the 
same as for the manual air conditioning. (Refer to 
GROUP 55A, Heater Unit, Blower Unit 

P.55A-130

.)

HEATER UNIT DISASSEMBLY AND REASSEMBLY

M1554009200038

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-144

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.

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