Nissan Qashqai (2007-2010). Manual - part 939

HAC-116

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

MEMORY FUNCTION DOES NOT OPERATE

MEMORY FUNCTION DOES NOT OPERATE

Description

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Symptom

• Memory function does not operate normally.
• The setting is not maintained. (It returns to the initial condition.)

Inspection procedure

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1.

CHECK OPERATION

1.

Set temperature control dial to 30.0

°

C.

2.

Press ON/OFF switch.

3.

Turn ignition switch OFF.

4.

Turn ignition switch ON.

5.

Press AUTO switch or ON/OFF switch.

6.

Check that the set temperature is maintained.

Is the inspection result normal?

YES

>> END.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY AND GROUND CIRCUIT OF AUTO AMP

Check power supply and ground circuit of auto amp. Refer to 

HAC-89, "Component Function Check"

. 

Is the inspection result normal?

YES

>> Replace auto amp.

NO

>> Repair or replace malfunctioning part(s).

PRECAUTIONS

HAC-117

< PRECAUTION >

[AUTOMATIC AIR CONDITIONER]

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PRECAUTION

PRECAUTIONS

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

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The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRC and SB section of this Service Man-
ual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRC section.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.

Precaution Necessary for Steering Wheel Rotation After Battery Disconnect

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NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-

TEM).

• Remove and install all control units after disconnecting both battery cables with the ignition knob in the

″

LOCK

″

 position.

• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.

If DTC is detected, perform trouble diagnosis according to self-diagnostic results.

For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.

OPERATION PROCEDURE

1.

Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.

2.

Use the Intelligent Key or mechanical key to turn the ignition switch to the 

″

ACC

″

 position. At this time, the

steering lock will be released.

3.

Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.

4.

Perform the necessary repair operation.

5.

When the repair work is completed, return the ignition switch to the 

″

LOCK

″

 position before connecting

the battery cables. (At this time, the steering lock mechanism will engage.)

6.

Perform a self-diagnosis check of all control units using CONSULT-III. 

Precaution for Procedure without Cowl Top Cover

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HAC-118

< PRECAUTION >

[AUTOMATIC AIR CONDITIONER]

PRECAUTIONS

When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.

Working with HFC-134a (R-134a)

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CAUTION:

• CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. These refrigerants

must never be mixed, even in the smallest amounts. If the refrigerants are mixed and compressor
malfunction is likely occur.

• Use only specified lubricant for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) compo-

nents. If lubricant other than that specified is used, compressor malfunction is likely to occur.

• The specified HFC-134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The fol-

lowing handling precautions must be observed:

- When removing refrigerant components from a vehicle, immediately cap (seal) the component to

minimize the entry of moisture from the atmosphere.

- When installing refrigerant components to a vehicle, never remove the caps (unseal) until just before

connecting the components. Connect all refrigerant loop components as quickly as possible to min-
imize the entry of moisture into system.

- Only use the specified lubricant from a sealed container. Immediately reseal containers of lubricant.

Without proper sealing, lubricant will become moisture saturated and should not be used.

- Never allow lubricant (Nissan A/C System Oil Type S) to come in contact with styrene foam parts.

Damage may result.

General Refrigerant Precaution

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WARNING:

• Avoid breathing A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and

throat. Use only approved recovery/recycling equipment to discharge HFC-134a (R-134a) refrigerant.
If accidental system discharge occurs, ventilate work area before resuming service. Additional
health and safety information may be obtained from refrigerant and lubricant manufacturers.

• Never release refrigerant into the air. Use approved recovery/recycling equipment to capture the

refrigerant every time an air conditioning system is discharged.

• Always wear eye and hand protection (goggles and gloves) when working with any refrigerant or air

conditioning system.

• Never store or heat refrigerant containers above 52

°

C (126

°

F).

• Never heat a refrigerant container with an open flame; if container warming is required, place the

bottom of the container in a warm pail of water.

• Never intentionally drop, puncture, or incinerate refrigerant containers.
• Keep refrigerant away from open flames: poisonous gas will be produced if refrigerant burns.
• Refrigerant will displace oxygen, therefore be certain to work in well ventilated areas to prevent suf-

focation.

• Never pressure test or leak test HFC-134a (R-134a) service equipment and/or vehicle air conditioning

systems with compressed air during repair. Some mixtures of air and HFC-134a (R-134a) have been
shown to be combustible at elevated pressures. These mixtures, if ignited, may cause injury or prop-
erty damage. Additional health and safety information may be obtained from refrigerant manufactur-
ers.

Refrigerant Connection

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A new type refrigerant connection has been introduced to all refrigerant lines except the following location.
• Expansion valve to evaporator
• Refrigerant pressure sensor to liquid tank

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PRECAUTIONS

HAC-119

< PRECAUTION >

[AUTOMATIC AIR CONDITIONER]

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O-RING AND REFRIGERANT CONNECTION

CAUTION:

The new and former refrigerant connections use different O-ring configurations. Never confuse O-
rings since they are not interchangeable. If a wrong O-ring is installed, refrigerant may leak at the con-
nection.

O-Ring Part Numbers and Specifications

1.

Heater sealing

2.

Expansion valve

3.

O-ring

4.

Evaporator

5.

Low pressure pipe 1 and high pres-
sure pipe 2 assembly

6.

Connector pipe fixing bolt

7.

High pressure pipe 1

8.

Condenser assembly

9.

Fixing bolt

10.

Compressor

11.

Heater & cooling unit assembly

12. Heater & blower unit assembly

13.

Refrigerant pressure sensor

14. Liquid tank

15. Pipe fixing bolt

16.

Low pressure flexible hose

17. Low & high pipe bracket support

18. Low pressure flexible hose and pipe 

2

19.

Pipes fixing clip

20. Low pressure pipe 2 fixing clamp as-

sembly

21. Liquid tank fixing screw

22.

Liquid tank fixing bracket

23. High pressure flexible hose

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