Mitsubishi Lancer (4A9 engine). Manual - part 304

HEATER UNIT AND BLOWER ASSEMBLY

HEATER, AIR CONDITIONER AND VENTILATION

55A-97

HEATER UNIT AND BLOWER ASSEMBLY

REMOVAL AND INSTALLATION

M1552020801032

WARNING

For removal and installation of the passenger's side air bag module, always observe the 
service procedures described in GROUP 52B, Driver’s Air Bag Module  to Passenger’s 
(Front) Air Bag Module .

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

Discharging ).

• Engine coolant replacement (Refer to GROUP 14, on-

vehicles service  <4A9>,  <4B10, 4J1>,  <4N1>).

• Steering column shaft assembly Removal and Installation 

(Refer to GROUP 37A, Steering Column Shaft  <Power 

steering> or GROUP 37B, Steering Column Shaft  <Elec-

trical power steering>).

• Instrument Panel Removal and Installation (Refer to 

GROUP 52A, Instrument Panel ).

• Floor console Removal and Installation (Refer to GROUP 

52A, Floor console ).

ACA00807

4

3, 4

A/C compressor oil:
SUN PAG 56 or S10X

-Pipe coupling

5

5

6

8

9

4.9 ± 0.9 N·m

20 ± 5 N·m

23 ± 6 N·m

20 ± 5 N·m

18 ± 7 N·m

18 ± 7 N·m

7

N

1

2

11 ± 4 N·m

11 ± 4 N·m

AC

7.0 ± 3.0 N·m

3

Removal steps 

1.

Dash panel heat protector

2.

Heater hose connection

3.

Expansion valve cover <diesel 
engine>

<<

A

>>

4.

Suction pipe connection

<<

A

>>

5.

Liquid pipe connection

6.

O-ring

<<

B

>>

7.

Front deck crossmember

8.

Drain hose

9.

Heater unit

HEATER UNIT AND BLOWER ASSEMBLY

HEATER, AIR CONDITIONER AND VENTILATION

55A-98

REMOVAL SERVICE POINTS

<<A>> SUCTION PIPE AND LIQUID PIPE DIS-
CONNECTION

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.

HEATER UNIT AND BLOWER ASSEMBLY

HEATER, AIR CONDITIONER AND VENTILATION

55A-99

<<B>> FRONT DECK CROSSMEMBER REMOVAL

AC612705

C-27

C-28

C-126

C-125

C-127

C-128

C-129

C-130

BL

<LHD>

AC612706

AW

<LHD>

C-111

C-112

C-17

C-16

AC612707

AG

<LHD>

C-19

AC612710

C-130

C-27

C-28

BL

<RHD>

C-125

C-126

C-127

C-128

C-129

AC612711

AZ

<RHD>

C-111

C-112

C-17

C-16

AC612712

AH

<RHD>

C-19

Disconnect the following connectors to gain access 
to the front deck crossmember.

Connector 
number

Connector name

C-16

Instrument panel wiring harness and floor 
wiring harness combination

C-17

Instrument panel wiring harness and floor 
wiring harness combination

C-19

Instrument panel wiring harness and console 
wiring harness combination

C-27

Instrument panel wiring harness and floor 
wiring harness combination

C-28

Instrument panel wiring harness and floor 
wiring harness combination

C-111

Instrument panel wiring harness and front door 
wiring harness combination

C-112

Instrument panel wiring harness and front door 
wiring harness (RH) combination

HEATER UNIT AND BLOWER ASSEMBLY

HEATER, AIR CONDITIONER AND VENTILATION

55A-100

C-125

Instrument panel wiring harness and front door 
wiring harness (LH) combination

C-126

Instrument panel wiring harness and front door 
wiring harness (LH) combination

C-127

Instrument panel wiring harness and front 
wiring harness combination

C-128

Instrument panel wiring harness and front 
wiring harness combination

C-129

Instrument panel wiring harness and front 
wiring harness combination

C-130

Instrument panel wiring harness and roof wiring 
harness combination

Connector 
number

Connector name