Nissan Pathfinder. Manual — part 687

PRECAUTIONS

HAC-9

< PRECAUTION >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Do not attempt to connect HFC-134a (R-134a) service couplers to a

CFC-12 (R-12) A/C system. The HFC-134a (R-134a) couplers will

not properly connect to the CFC-12 (R-12) system. However, if an

improper connection is attempted, discharging and contamination

may occur.

Shut-off valve rotation

A/C service valve

Clockwise

Open

Counterclockwise

Close

RHA273D

HAC-10

< PREPARATION >

[AUTOMATIC AIR CONDITIONING]

PREPARATION

PREPARATION

PREPARATION

Special Service Tool

INFOID:0000000009176775

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Commercial Service Tool

INFOID:0000000009176776

Tool number
(Kent-Moore No.)
Tool name

Description

—

(J-46534)
Trim Tool Set

Removing trim components

AWJIA0483ZZ

(Kent-Moore No.)
Tool name

Description

( — )
Power tool

Loosening nuts, screws and bolts

PIIB1407E

COMPONENT PARTS

HAC-11

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

SYSTEM DESCRIPTION

COMPONENT PARTS

FRONT AUTOMATIC AIR CONDITIONING SYSTEM
FRONT AUTOMATIC AIR CONDITIONING SYSTEM : Component Parts Location

INFOID:0000000009176777

ALIIA0682ZZ

HAC-12

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

COMPONENT PARTS

FRONT AUTOMATIC AIR CONDITIONING SYSTEM : Component Description

INFOID:0000000009176778

1.

ECM

2.

BCM (view with combination meter
removed)

3.

IPDM E/R.

4.

A/C switch assembly (with base au-
dio system)

5.

A/C auto amp.

6.

A/C display unit (with base audio
system)

7.

Display unit (except base audio sys-
tem)

8.

A/C and AV switch assembly (except
base audio system)

9.

A/C auto amp.

10. AV control unit

11. Fuse block (J/B)

12. Fuse block (J/B)

13. Front blower motor relay

14. Accessory relay-2

15. A/C compressor

16. Sunload sensor

17. Refrigerant pressure sensor (view

with front bumper fascia removed)

18. Ambient sensor

19. In-vehicle sensor

20. Intake door motor (view with fresh air

intake duct removed from vehicle)

21. Front blower motor

22. Mode door motor (front) (view with

front A/C assembly removed from
vehicle)

23. Air mix door motor (driver side)

24. Air mix door motor (passenger side)

(view with front A/C assembly re-
moved from vehicle)

25. Intake sensor

ALIIA0683ZZ

Component

Description

A/C and AV switch assembly
(except base audio system)

Front A/C control operation signal is transmitted from the A/C and AV switch assembly to AV
control unit via communication line.

A/C display unit
(with base audio system)

The A/C display unit indicates operation status of the front and rear automatic air conditioning
system.

A/C switch assembly
(with base audio system)

The A/C switch assembly controls the operation of the A/C and heating system based on inputs
from the temperature control knob, the mode switches, the blower control dial, the ambient tem-
perature sensor, the intake sensor, and inputs received from the ECM via CAN communication.
Diagnosis of the A/C switch assembly can be performed using the CONSULT. There is no self-
diagnostic feature available.

A/C auto amp.

A/C auto amp. controls front automatic air conditioning system by inputting and calculating sig-
nals from each sensor and each switch.

A/C Compressor

Vaporized refrigerant is drawn into the A/C compressor from the evaporator, where it is com-
pressed to a high pressure, high temperature vapor. The hot, compressed vapor is then dis-
charged to the condenser.