2003 NISSAN X-TRAIL air conditioning

REFRIGERATION SYSTEM
ATC-19
C
D
E
F
G
H
I
K
L
MA
B
AT C

V-6 Variable Displacement Compressor (With Gasoline Engine: CWV-615M
Compressor)
EJS000TF
GENERAL INFORMATION
1. The V-6 variable compressor differs from previous units. The vent temperatures of the V-6 variable com-
pressor do not drop too far below 5°C (41°F) when:
Evaporator intake air temperature is less than 20°C (68°F).
Engine is running at speeds less than 1,500 rpm.
This is because the V-6 compressor provides a means of “capacity” control.
2. The V-6 variable compressor provides refrigerant control under varying conditions. During cold winters, it
may not produce high refrigerant pressure discharge (compared to previous units) when used with air
conditioning systems.
3. A “clanking” sound may occasionally be heard during refrigerant charge. The sound indicates that the tilt
angle of the wobble (swash) plate has changed and is not a malfunction.
4. For air conditioning systems with the V-6 compressor, the clutch remains engaged unless: the system
main switch, fan switch or ignition switch is turned OFF. When ambient (outside) temperatures are low or
when the amount of refrigerant is insufficient, the clutch is disengaged to protect the compressor.
5. A constant range of suction pressure is maintained when engine speed is greater than a certain value. It
normally ranges from 147 to 177 kPa (1.47 to 1.77 bar, 1.5 to 1.8 kg/cm
2 , 21 to 26 psi) under varying con-
ditions.
In previous compressors, however, suction pressure was reduced with increases in engine speed.

ATC-100
TROUBLE DIAGNOSIS

PERFORMANCE CHART
Test Condition
Testing must be performed as follows:
Test Reading (QR Engine)
Recirculating-to-discharge Air Temperature Table
Ambient Air Temperature-to-operating Pressure Table
Vehicle location Indoors or in the shade (in a well-ventilated place)
Doors Closed
Door windows Open
Hood Open
TEMP. Max. COLD
Mode control dial
(Ventilation) set
Intake switch
(Recirculation) set
Fan (blower) speedMax. speed set
Engine speed Idle speed
Operate the air conditioning system for 10 minutes before taking measurements.
Inside air (Recirculating air) at blower assembly inlet
Discharge air temperature at center ventilator
°C (°F) Relative humidity
%Air temperature
°C (°F)
50 - 6025 (77) 10.0 - 11.6 (50 - 53)
30 (86) 13.9 - 16.2 (57 - 61)
35 (95) 17.8 - 21.4 (64 - 71)
60 - 7025 (77) 11.6 - 13.9 (53 - 57)
30 (86) 16.2 - 18.9 (61 - 66)
35 (95) 21.4 - 24.5 (71 - 76)
Ambient air
High-pressure (Discharge side)
kPa (bar, kg/cm
2 , psi)Low-pressure (Suction side)
kPa (bar, kg/cm2 , psi) Relative humidity
%Air temperature
°C (°F)
50 - 7030 (86)980 - 1,180
(9.8 - 11.8, 9.99 - 12.04, 142 - 171)230 - 270
(2.3 - 2.7, 2.35 - 2.75, 33 - 39)
35 (95)1,180 - 1,390
(11.8 - 13.9, 12.04 - 14.18, 171 - 202)260 - 310
(2.6 - 3.1, 2.65 - 3.16, 38 - 45)
40 (104)1,400 - 1,580
(14.0 - 15.8, 14.28 - 16.12, 203 - 229)300 - 350
(3.0 - 3.5, 3.06 - 3.57, 44 - 51)

ATC-104
TROUBLE DIAGNOSIS

Low-pressure Side Sometimes Becomes Negative
Low-pressure Side Becomes Negative
Gauge indication Refrigerant cycle Probable cause Corrective action
Low-pressure side sometimes
becomes negative.

Air conditioning system
does not function and does
not cyclically cool the com-
partment air.

The system constantly func-
tions for a certain period of
time after compressor is
stopped and restarted.Refrigerant does not dis-
charge cyclically.
↓
Moisture is frozen at expan-
sion valve outlet and inlet.
↓
Water is mixed with refriger-
ant.

Drain water from refrigerant
or replace refrigerant.

Replace liquid tank.
AC354A
Gauge indication Refrigerant cycle Probable cause Corrective action
Low-pressure side becomes nega-
tive.
Liquid tank or front/rear side of
expansion valve′s pipe is
frosted or dewed.High-pressure side is closed
and refrigerant does not flow.
↓
Expansion valve or liquid tank
is frosted.Leave the system at rest until
no frost is present. Start it
again to check whether or not
the malfunction is caused by
water or foreign particles.

If water is the cause, initially
cooling is okay. Then the
water freezes causing a
blockage. Drain water from
refrigerant or replace refrig-
erant.

If due to foreign particles,
remove expansion valve
and remove the particles
with dry and compressed air
(not shop air).

If either of the above meth-
ods cannot correct the mal-
function, replace expansion
valve.

Replace liquid tank.

Check lubricant for contami-
nation.
AC362A

MA-4
DESCRIPTION

DESCRIPTIONPFP:00000
Pre-delivery Inspection ItemsELS000Y5
Shown below are Pre-delivery Inspection Items required for the new vehicle. It is recommended that
necessary items other than those listed here be added, paying due regard to the conditions in each
country.
Perform applicable items on each model. Consult text of this section for specifications.
Install vehicle protection kit
Fit all accessories ordered (if applicable) (e.g. towbar, audio, navigation, air conditioner, styling kit)
UNDER HOOD — engine off
Check coolant level and cooling system for leaks
Charge battery and check terminals for condition
Check drive belts tension (diesel only)
Check fuel filter for water or dust (diesel only) and fuel system for leaks
Check engine oil level and for oil leaks
Check brake and clutch fluid levels and fluid lines for leaks
Check and top up washer reservoirs
Check power steering fluid level and fluid lines for leaks (if applicable)
Check air conditioning system for gas leaks (if applicable)
ON INSIDE AND OUTSIDE
Install transit fuse if removed for vehicle storage
Check instruments, gauges, lamps, horn and accessories for operation
Check wipers and washers for operation and adjustment
Check interior and door mirrors and sun visors for operation
Set radio code and set clock
Check parking brake adjustment
Check clutch pedal adjustment
Check steering lock operation
Check seat adjusters and seat belts for operation
Check all windows for operation and alignment
Check mouldings, trim and fittings for fit and alignment
Check weatherstrips for fit and adhesion
Check hood, trunk lid, door panels and fuel lid for fit and alignment
Check latches, keys, remote key, door locks and remote trunk lid and fuel lid release for operation
Check wheel nut torques
Check tyre pressure (incl. spare tyre)
Check tool kit and jack for operation
Check automatic transmission/transaxle starter inhibitor (if applicable)
Check sunroof for operation and alignment (if applicable)
UNDER BODY
Check manual transmission/transaxle, differential and transfer box for oil level and oil leaks
Tighten bolts and nuts steering linkage and gear box, axle/suspension parts, propeller and exhaust system
Check brake and clutch lines, and oil/fluid reservoirs for leaks
Remove front suspension spacer blocks (if applicable)
Check body mounting torque (if applicable)

DESCRIPTION
MA-5
C
D
E
F
G
H
I
J
K
MA
B
MA

ROAD TEST
Check clutch operation
Check foot brake operation
Check parking brake operation
Check steering operation, self-centering and steering wheel alignment
Check engine performance
Check for squeaks, rattles and noise from interior, suspension and brakes
Check heating, ventilation and air conditioning operation
Check radio, cassette and CD player operation
Check odometer and trip meter operation and cancelling
Check instruments for operation
Check automatic transmission/transaxle shift pattern and kickdown operation (if applicable)
Check cruise control and navigation system operation (if applicable)
ENGINE OPERATING AND HOT
Check idle speed
Check automatic transmission/transaxle oil level (if applicable)
FINAL INSPECTION
Remove vehicle protection kit
Fit interior mats and wheel covers
Check for interior and exterior metal and paint damage
Wash, clean interior and exterior
: Not applicable to this model