Mitsubishi Montero (2004+). Manual - part 620

HEATER CONTROL ASSEMBLY, A/C SWITCH AND INSIDE/OUTSIDE CHANGEOVER SWITCH

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-123

HEATER CONTROL ASSEMBLY

M1551001300065

DISASSEMBLY AND ASSEMBLY

DISASSEMBLY SERVICE POINT

.

<<A>> AIR OUTLET CHANGEOVER DAMPER LEVER 
CABLE AND AIR MIX DAMPER LEVER CABLE REASSEM-
BLY 
Insert a flat-tipped screwdriver into the control base clip from 
inner side, and then remove the cable by lifting the claw part of 
the clip.

AC001035

1

2

3

4

5

6

7

AB

DISASSEMBLY STEPS

1.

KNOB

2.

BULB

<<A>>

3.

AIR OUTLET CHANGEOVER 
DAMPER LEVER CABLE

<<A>>

4.

AIR MIX DAMPER CHANGEOVER 
LEVER CABLE

5.

DEFROSTER SWITCH

6.

HEATER CONTROL PANEL

7.

BLOWER SWITCH ASSEMBLY

DISASSEMBLY STEPS 

AC001031       

AB

FLAT-TIPPED 

SCREW DRIVER

TAB

HEATER UNIT

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-124

HEATER UNIT

REMOVAL AND INSTALLATION

M1551001600077

WARNING

When removing and installing the heater unit, do not let it bump against the SRS-ECU or the 
components.

Pre-removal and Post-installation Operation
• Refrigerant discharging and charging (Refer to 

P.55A-113

).

• Engine coolant draining and refilling (Refer to GROUP 00, Maintenance Service − Engine Coolant (Charge) 

P.00-46

).

• Instrument Panel Removal and Installation (Refer to GROUP 52A, Instrument Panel 

P.52A-3

).

• Steering column shaft and front crossmember union bolt (Refer to GROUP 37A, Steering Wheel and Shaft 

P.37A-22

).

ACX01458

12 ± 2 N·m
106 ± 17  in-lb

9.8 ± 2 N·m
87 ± 17 in-lb

3

22 ± 4 N·m
16 ± 5  ft-lb

7

6

8

10

9

4

1

2

N

N

N

N

N

N

5

AE

REMOVAL STEPS

1. HEATER HOSE

<<A>>

2. SUCTION HOSE

<<A>>

3. LIQUID PIPE
4. HARNESS CONNECTORS
5. FOOT DUCT B

6. FOOT DUCT D
7. FRONT DECK CROSSMEMBER
8. FLANGE BRACKET
9. BLOWER ASSEMBLY
10. HEATER UNIT

REMOVAL STEPS (Continued)

HEATER UNIT

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-125

REMOVAL SERVICE POINTS

.

<<A>> SUCTION HOSE/LIQUID PIPE REMOVAL

CAUTION

Seal the pipes completely, otherwise the compressor oil 
and receiver will absorb water vapor easily, possibly dam-
aging the compressor and deteriorating performance.
Plug the disconnected pipe and the evaporator nipple to pre-
vent foreign material from getting into them.

HEATER UNIT DISASSEMBLY AND ASSEMBLY

M1551005400053

ACX01450

3

8

4

2

12

11

10

9

13

1

7

6

5

N

N

N

AB

DISASSEMBLY STEPS

1.

FOOT DUCT A

2.

FOOT DUCT C

3.

AIR THERMO SENSOR CLIP

4.

AUTO COMPRESSOR-ECU AND AIR 
THERMO SENSOR ASSEMBLY

5.

RESISTOR

6.

JOINT DUCT

7.

AIR DUCT SUB ASSEMBLY

8.

HEATER CORE

9.

FRONT PIPE ASSEMBLY

10. EXPANSION VALVE
11. PIPE
12. EVAPORATOR
13. CASE

DISASSEMBLY STEPS (Continued)

HEATER UNIT

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-126

BLOWER ASSEMBLY DISASSEMBLY AND ASSEMBLY

M1551005500135

ACX01407AB

2

3

1

DISASSEMBLY STEPS

1.

BLOWER MOTOR

2.

INSIDE/OUTSIDE AIR 
CHANGEOVER DAMPER MOTOR

3.

CASE

DISASSEMBLY STEPS