Mitsubishi Galant 9G. Manual — part 298

HEATER UNIT, HEATER CORE, BLOWER ASSEMBLY AND EVAPORATOR UNIT

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-268

REMOVAL SERVICE POINTS

.

<<A>> SUCTION PIPE AND LIQUID PIPE DISCON-
NECTION

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-287

.)

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-269

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-270

DISASSEMBLY AND ASSEMBLY

M1551005400365

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.

EXPANSION VALVE JOINT

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

HEATER UNIT, HEATER CORE, BLOWER ASSEMBLY AND EVAPORATOR UNIT

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-271

INSPECTION

M1552014301157

.

AIR MIXING 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.

.

POTENTIOMETER CHECK

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

Standard value: 1.7 (MAX HOT)

− 5.0 (MAX COOL) kΩ

AIR THERMO SENSOR INSPECTION

.

Measure the resistance between connector terminals 1 and 2
under at least two different temperatures. The resistance val-
ues should generally match those in the graph.
NOTE: The temperature at the check should not exceed the
range in the graph.

LEVER POSITION BATTERY

CONNECTION

LEVER
OPERATION

At the MAX COOL
position

• Connect

terminal 2 to the
positive battery
terminal

• Connect

terminal 1 to the
negative battery
terminal

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

At the MAX HOT
position

• Connect

terminal 1 to the
positive battery
terminal

• Connect

terminal 2 to the
negative battery
terminal

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

AC206296

MAX HOT POSITION

MAX COOL POSITION

1 2

4

3

5

7

6

AB

AC001043

RESISTANCE k

Ω

8

6

4

2

0

-10

0

10

20

30

40

TEMPERATURE ˚C(˚F)

AB

(14)

(32)

(50)

(86)

(104)

(68)