Mitsubishi Galant (2004+). Manual - part 783

HEATER UNIT, HEATER CORE, BLOWER ASSEMBLY AND EVAPORATOR UNIT

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-271

HEATER UNIT, HEATER CORE, BLOWER ASSEMBLY AND 

EVAPORATOR UNIT

REMOVAL AND INSTALLATION

M1552021400012

WARNING

•

Before removing the front seat assembly, refer to GROUP 52B, Service Precautions 

P.52B-26

 and Air Bag Module and Clock Spring 

P.52B-368

.

•

When removing and installing the front passenger seat, be sure to carry out accuracy 
check occupant classification sensor after the seat has been installed in the vehicle. 
(Refer to GROUP 52B, On-Vehicle Service 

P.52B-354

.)

Pre-removal and Post-installation Operation
• Refrigerant draining and Refilling (Refer to Charging and 

Discharging 

P.55A-264

).

• Engine coolant Draining and Refilling (Refer to GROUP 

00, Engine coolant 

P.00-53

).

• Instrument Panel Removal and Installation (Refer to 

GROUP 52A, Instrument Panel 

P.52A-3

).

• Steering Column Shaft Assembly Removal and Installa-

tion (Refer to GROUP 37A, Steering Shaft

P.37A-29

).

• Floor Console Removal and Installation (Refer to GROUP 

52A, Floor Console 

P.52A-9

).

• Front Seat Assembly Removal and Installation (Refer to 

GROUP 52A, Front Seat 

P.52A-21

).

² Strut Tower Bar (Refer to GROUP 42, Removal And 

Installation

P.42-12

.)

AC306290

1

2

3

4

N

5

6

7

AC

2, 3

A/C compressor oil:
  SUN PAG 56

-Pipe coupling

4

4.9 ± 0.9 N·m
43 ± 8 in-lb

22 ± 4 N·m
16 ± 3 ft-lb

22 ± 4 N·m
16 ± 3 ft-lb

12 ± 2 N·m
102 ± 22 in-lb

12 ± 2 N·m
102 ± 22 in-lb

HEATER UNIT, HEATER CORE, BLOWER ASSEMBLY AND EVAPORATOR UNIT

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-272

REMOVAL SERVICE POINTS

.

<<A>> SUCTION PIPE AND LIQUID PIPE DISCONNECTION

CAUTION

As the compressor oil and receiver are highly moisture 
absorbent, use a non-porous material to plug the hose and 
nipples.
To prevent the entry of dust or other foreign bodies, plug the 
dismantled hose and the nipples of the expansion valves.

.

<<B>> HEATER UNIT AND DECK CROSSMEMBER 
ASSEMBLY REMOVAL
Disconnect the following connectors to gain access to the front 
deck crossmember.

REMOVAL STEPS

•

BATTERY

•

AIR CLEANER BODY (REFER TO 
GROUP 15, AIR CLEANER 

P.15-4

.)

1.

HEATER HOSE CONNECTION

<<A>>

2.

SUCTION PIPE CONNECTION

<<A>>

3.

LIQUID PIPE CONNECTION

4.

O-RING

•

REAR HEATER DUCT A AND B 
(REFER TO 

P.55A-291

.)

5.

JUNCTION BLOCK

6.

ETACS-ECU

<<B>>

7.

HEATER UNIT AND DECK 
CROSSMEMBER ASSEMBLY

REMOVAL STEPS (Continued)

Connector 
number

Connector name

C-13

INSTRUMENT PANEL WIRING HARNESS 
AND FLOOR WIRING HARNESS 
COMBINATION

C-113

AUDIO AMPLIFIER

C-114

AUDIO AMPLIFIER

C-25

FRONT WIRING HARNESS AND FLOOR 
WIRING HARNESS COMBINATION

C-26

INSTRUMENT PANEL WIRING HARNESS 
AND FRONT DOOR WIRING HARNESS (LH) 
COMBINATION

C-27

INSTRUMENT PANEL WIRING HARNESS 
AND ROOF WIRING HARNESS 
COMBINATION

C-28

INSTRUMENT PANEL WIRING HARNESS 
AND FLOOR WIRING HARNESS 
COMBINATION

C-29

INSTRUMENT PANEL WIRING HARNESS 
AND FRONT WIRING HARNESS 
COMBINATION

C-30

STOPLIGHT SWITCH

AC305233

C-13

C-114

C-113

CM

AC305231

C-25

C-26

C-27

C-28

C-29

C-30

DB

HEATER UNIT, HEATER CORE, BLOWER ASSEMBLY AND EVAPORATOR UNIT

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-273

 REMOVAL AND INSTALLATION

M1552011600316

AC306304

1

3

4

5

2

6

AB

REMOVAL STEPS

1.

DATA LINK CONNECTOR 
BRACKET

2.

HEATER UNIT AND BLOWER 
ASSEMBLY

3.

PLATE BRACKET

4.

HEATER UNIT

5.

BLOWER ASSEMBLY

6.

DECK CROSSMEMBER 
ASSEMBLY

REMOVAL STEPS (Continued)

HEATER UNIT, HEATER CORE, BLOWER ASSEMBLY AND EVAPORATOR UNIT

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-274

DISASSEMBLY AND ASSEMBLY

M1551005400257

AC306305

1

2

3

4

5

N

5

N

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

22

AB

DISASSEMBLY STEPS

1.

PACKING

2.

HEATER CORE ASSEMBLY

3.

JOINT BLOCK

4.

EXPANSION VALVE

5.

O-RING

6.

EVAPORATOR

7.

MODE SELECTION DAMPER 
CONTROL MOTOR AND 
POTENTIOMETER

8.

ASPIRATOR

9.

ASPIRATOR HOSE

10. AIR THERMO SENSOR CLIP

11. AIR THERMO SENSOR
12. FOOT DUCT
13. LEVER A
14. LEVER B
15. LEVER C
16. LEVER D
17. LEVER E
18. HEATER CASE LOWER
19. MODE SELECTION DAMPER
20. MAX A/C DAMPER
21. AIR MIXING DAMPER
22. HEATER CASE UPPER

DISASSEMBLY STEPS