Mitsubishi Grandis. Manual — part 332

REAR A/C SWITCH

HEATER, AIR CONDITIONER AND VENTILATION

55-213

REAR A/C SWITCH

REMOVAL AND INSTALLATION

M1554017200022

INSPECTION

M1552014301414

REAR HEATER CONTROLLER
CONTINUITY CHECK

AC303126

2

1

1

2

AB

<Vehicles with sunroof>

<Vehicles without sunroof>

Removal steps

1.

Rear heater controller (Refer to
GROUP 52A, Headlining

P.52A-17

.)

•

Headlining (Refer to GROUP 52A,
Headlining

P.52A-17

.)

2.

Rear heater controller bracket

AC303225

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

REAR HEATER UNIT

HEATER, AIR CONDITIONER AND VENTILATION

55-214

REAR AIR VOLUME ADJUSTING SWITCH

REAR TEMPERATURE CONTROL KNOB
<VEHICLES WITH DUAL AUTOMATIC
A/C>

Check that the resistance value between connector
terminals 14 and 15 changes gradually within the
standard value when moving the knob.

Standard value: Approximately 3k

Ω or less

REAR HEATER UNIT

REMOVAL AND INSTALLATION

M1554015300023

Switch status

Checking
terminal

Normal
conditions

OFF

4

− 9

2

Ω or less

AUTO
<vehicles with
dual automatic
A/C>

5

− 9

2

Ω or less

1

6

− 9

2

Ω or less

2

7

− 9

2

Ω or less

3

8

− 9

2

Ω or less

Pre-removal and Post-installation Operation
• Engine coolant Draining and Refilling (Refer to GROUP

14, On vehicles service

P.14-16

.)

• Refrigerant draining and Refilling (Refer to Charging

P.55-191

and Discharging

P.55-190

.)

• Third seat assembly removal and installation (Refer to

GROUP 52A, Third Seat Assembly

P.52A-33

.)

• Quarter trim lower and quarter trim upper removal and

installation (Refer to GROUP 52A, Interior Trim

P.52A-10

.)

AC303098

2

3

6

5

1

AB

4

4

N

13.7 ± 1.0 N·m

32 ± 2 N·m

3

A/C compressor oil:
SUN PAG 56

-Pipe coupling

REAR HEATER UNIT

HEATER, AIR CONDITIONER AND VENTILATION

55-215

REMOVAL SERVICE POINTS
<<A>> REAR A/C PIPE REMOVAL

CAUTION

Use the plug which is not breathable because
A/C compressor oil or receiver have high
hygroscopicity.
Plug the pipe nipple to prevent the entry of dust and
dirt.

DISASSEMBLY AND REASSEMBLY
<VEHICLES WITH REAR HEATER, REAR
COOLER OR DUAL AUTOMATIC A/C>

M1554017600019

Removal steps

1.

Rear pillar duct

2.

Rear floor duct A

<<A>>

3.

Rear A/C pipe connection

4.

O ring

5.

Heater hose connection

6.

Rear heater unit

AC302508

11

2

1

12

13

14

11

10

8

7

9

5

3

4

6

AB

Removal steps

1.

Rear blower motor <Vehicles with
rear heater, rear cooler or dual
automatic A/C>

2.

Rear power transistor <Vehicles
with rear heater, rear cooler or dual
automatic A/C>

3.

Harness <vehicles with dual
automatic A/C>

4.

Rear air mix damper control motor
<Vehicles with dual automatic A/C>

5.

Rear heater pipe bracket <Vehicles
with rear heater or dual automatic
A/C>

6.

Rear heater core <Vehicles with
rear heater or dual automatic A/C>

7.

Rear air mix lever <Vehicles with
dual automatic A/C>

8.

Rear mode selection damper lever
A <Vehicles with dual automatic
A/C>

Removal steps (Continued)

REAR HEATER UNIT

HEATER, AIR CONDITIONER AND VENTILATION

55-216

INSPECTION

M1552014301425

CHECK THE REAR AIR MIX DAMPER
MOTOR AND POTENTIOMETER
<VEHICLES WITH DUAL AUTOMATIC
A/C>

CAUTION

Stop energizing when the lever is set to the
operation stopping position.

MOTOR CHECK

Potentiometer check
When the resistance value between connector
terminals 3 and 5 is measured while checking the
motor, check that the resistance value changes
gradually within the standard value.

Standard value: 1.20 (MAX COOL)

− 4.80

(MAX HOT) k

Ω

9.

Rear mode selection damper lever
B <Vehicles with dual automatic
A/C>

10. Rear mode selection damper lever

C <Vehicles with dual automatic
A/C>

11. Rear heater case <Vehicles with

rear heater, rear cooler or dual
automatic A/C>

12. Evaporator <vehicles with rear

cooler or dual automatic A/C>

13. Rear mode selection damper

<Vehicles with dual automatic A/C>

14. Rear mode selection damper

<Vehicles with dual automatic A/C>

Removal steps (Continued)

AC302969

MAX
COOL

MAX
HOT

1 2 3 4 5

AB

Battery
connection (+)
terminal

Battery
connection (-)
terminal

Lever
operation

2

1

Rotate to the
MAX HOT side.

1

2

Rotate to the
MAX COOL
side.