Nissan Quest E52. Manual - part 717

 

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Nissan Quest E52. Manual - part 717

 

 

REAR A/C UNIT

HA-59

< REMOVAL AND INSTALLATION >

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5.

Remove mounting bolts, and then remove evaporator pipe assembly and expansion valve from evapora-
tor assembly as a set. Refer to 

HA-56, "Exploded View"

.

INSTALLATION

Note the following items, and then install in the reverse order of removal.

CAUTION:

• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Perform lubricant adjusting procedure after installing new evaporator. Refer to 

HA-22, "Lubricant

Adjusting Procedure for Components Replacement Except Compressor"

.

• Check for leakages when recharging refrigerant. Refer to 

HA-18, "Leak Test"

.

EVAPORATOR PIPE ASSEMBLY

EVAPORATOR PIPE ASSEMBLY : Removal and Installation

INFOID:0000000009651601

CAUTION:

Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to 

HA-

22, "Perform Lubricant Return Operation"

.

REMOVAL

1.

Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to 

HA-20, "Recy-

cle Refrigerant"

.

2.

Remove rear A/C unit assembly. Refer to 

HA-57, "REAR A/C UNIT ASSEMBLY : Removal and Installa-

tion"

.

3.

Remove mounting bolt, and then disconnect rear cooler pipe assembly from expansion valve.

CAUTION:

Cap or wrap the joint of the rear A/C piping and expansion valve with suitable material such as
vinyl tape to avoid the entry of air.

4.

Remove mounting bolts, and then remove expansion valve from evaporator pipe assembly.

CAUTION:

Cap or wrap the joint of the expansion valve and evaporator pipe assembly with suitable material
such as vinyl tape to avoid the entry of air.

5.

Disassemble rear A/C unit assembly, and then remove evaporator assembly.

6.

Remove mounting bolts, and then remove evaporator pipe assembly from evaporator assembly.

INSTALLATION

Note the following items, and then install in the reverse order of removal.

CAUTION:

• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to 

HA-18, "Leak Test"

.

HEATER CORE

HEATER CORE : Removal and Installation

INFOID:0000000009651602

CAUTION:

Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to 

HA-

22, "Perform Lubricant Return Operation"

.

REMOVAL

1.

Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to 

HA-20, "Recy-

cle Refrigerant"

.

2.

Remove rear A/C unit assembly. Refer to 

HA-57, "REAR A/C UNIT ASSEMBLY : Removal and Installa-

tion"

.

3.

Remove fixing screws, and then remove rear foot duct 2 from rear A/C unit assembly.

4.

Remove heater core from rear A/C unit assembly.

INSTALLATION

Note the following item, and then install in the reverse order of removal.
NOTE:

HA-60

< REMOVAL AND INSTALLATION >

REAR A/C UNIT

Refer to 

CO-9, "Refilling"

 when filling radiator with engine coolant.

EXPANSION VALVE

EXPANSION VALVE : Removal and Installation

INFOID:0000000009651603

CAUTION:

Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to 

HA-

22, "Perform Lubricant Return Operation"

.

REMOVAL

1.

Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to 

HA-20, "Recy-

cle Refrigerant"

.

2.

Remove rear A/C unit assembly. Refer to 

HA-57, "REAR A/C UNIT ASSEMBLY : Removal and Installa-

tion"

.

3.

Remove mounting bolt, and then disconnect rear cooler pipe assembly from expansion valve.

CAUTION:

Cap or wrap the joint of the rear A/C piping and expansion valve with suitable material such as
vinyl tape to avoid the entry of air.

4.

Remove mounting bolts, and then disconnect expansion valve from evaporator pipe assembly.

CAUTION:

Cap or wrap the joint of the expansion valve and evaporator pipe assembly with suitable material
such as vinyl tape to avoid the entry of air.

INSTALLATION

Note the following items, and then install in the reverse order of removal.

CAUTION:

• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to 

HA-18, "Leak Test"

.

SERVICE DATA AND SPECIFICATIONS (SDS)

HA-61

< SERVICE DATA AND SPECIFICATIONS (SDS) 

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SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

Compressor

INFOID:0000000009651604

Lubricant

INFOID:0000000009651605

Refrigerant

INFOID:0000000009651606

Engine Idling Speed

INFOID:0000000009651607

Refer to 

EC-461, "Idle Speed"

.

Belt Tension

INFOID:0000000009651608

Refer to 

EM-14, "Tension Adjustment"

.

Model

VALEO THERMAL SYSTEMS JAPAN make

DKS-17D

Type

Fixation displacement swash plate

Displacement

cm

3

 (cu in)/rev

Maximum

175 (10.7)

Direction of rotation

Clockwise (viewed from clutch)

Drive belt

Poly V

Disc to pulley clearance
mm (in)

Standard

0.3 – 0.6 (0.012 – 0.024)

Name

A/C System Oil Type S (DH-PS)

Capacity

m  (US fl oz, Imp fl oz)

Total in system

250 (8.5, 8.8)

Compressor (service part) charging 
amount

250 (8.5, 8.8)

Type

HFC-134a (R-134a)

Capacity
kg (lb)

0.9 (1.98)

HAC-1

VENTILATION, HEATER & AIR CONDITIONER

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SECTION 

HAC

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HAC

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CONTENTS

HEATER & AIR CONDITIONING CONTROL SYSTEM

AUTOMATIC AIR CONDITIONING

PRECAUTION ...............................................

7

PRECAUTIONS ...................................................

7

Precaution for Supplemental Restraint System 
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................
..

7

Precautions for Removing Battery Terminal  .............

7

SYSTEM DESCRIPTION  ..............................

8

COMPONENT PARTS  ........................................

8

Component Parts Location ........................................

8

BLOWER UNIT ASSEMBLY  .......................................

9

BLOWER UNIT ASSEMBLY : Intake Door Motor ....

10

BLOWER UNIT ASSEMBLY : Front Blower Motor 

....

10

HEATER & COOLING UNIT ASSEMBLY .................

10

HEATER & COOLING UNIT ASSEMBLY : Aspira-
tor ............................................................................

10

HEATER & COOLING UNIT ASSEMBLY : Intake 
Sensor .....................................................................

11

HEATER & COOLING UNIT ASSEMBLY : Front 
Air Mix Door Motor (Driver side) ..............................

11

HEATER & COOLING UNIT ASSEMBLY : Front 
Air Mix Door Motor (Passenger side)  ......................

11

HEATER & COOLING UNIT ASSEMBLY : Front 
Mode Door Motor  ....................................................

11

REAR A/C UNIT ASSEMBLY ....................................

11

REAR A/C UNIT ASSEMBLY : Rear In-vehicle 
Sensor .....................................................................

11

REAR A/C UNIT ASSEMBLY : Rear Air Mix Door 
Motor .......................................................................

11

REAR A/C UNIT ASSEMBLY : Rear Mode Door 
Motor .......................................................................

12

REAR A/C UNIT ASSEMBLY : Rear Blower Motor 

....

12

Front A/C Control (A/C Auto Amp.)  .........................

12

Rear A/C Control  .....................................................

12

Ambient Sensor  .......................................................

13

Front In-vehicle Sensor  ...........................................

13

Sunload Sensor  .......................................................

13

Refrigerant Pressure Sensor  ...................................

13

Exhaust Gas/Outside Odor Detecting Sensor  .........

14

Magnet Clutch  .........................................................

14

Ionizer ......................................................................

15

SYSTEM ............................................................

16

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM ............................................................................

16

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : System Description  .......................................

16

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Temperature Control .....................................

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FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Air Outlet Control  ..........................................

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FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Air Flow Control  ............................................

18

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Air Inlet Control  .............................................

19

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Compressor Control ......................................

19

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Door Control ..................................................

20

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Circuit Diagram  .............................................

25

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM ............................................................................

25

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : System Description  .......................................

26

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Temperature Control .....................................

27

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Air Outlet Control  ..........................................

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REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Air Flow Control  ............................................

27

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Door Control ..................................................

29

 

 

 

 

 

 

 

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