Nissan Qashqai (2007-2010). Manual — part 897
HA-158
< ON-VEHICLE REPAIR >
[MANUAL AIR CONDITIONER (HR/MR)]
EXPANSION VALVE
• O-rings are different from low-pressure pipe 1 (high-pressure pipe 1) and low-pressure pipe 2 (high-
pressure pipe 2).
• When recharging refrigerant, check for leaks.
SERVICE DATA AND SPECIFICATIONS (SDS)
HA-159
< SERVICE DATA AND SPECIFICATIONS (SDS)
[MANUAL AIR CONDITIONER (HR/MR)]
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Compressor
INFOID:0000000001098186
Lubricant
INFOID:0000000001098187
Refrigerant
INFOID:0000000001098188
Engine Idling Speed
INFOID:0000000001098189
Refer to
EC-29, "IDLE SPEED : Description"
(HR with EURO-OBD),
EC-368, "IDLE SPEED : Description"
without EURO-OBD),
EC-646, "IDLE SPEED : Description"
EC-990, "IDLE SPEED : Descrip-
(MR without EURO-OBD).
Belt Tension
INFOID:0000000001098190
Model
CALSONICKANSEI
Type
Variable displacement swash plate
Displacement
cm
3
(cu in)/rev
Max.
120 (7.32)
Min.
6 (0.37)
Cylinder bore
×
stroke (Max.)
mm (in.)
32
×
29 (1.26
×
1.14)
Direction of rotation
Clockwise (viewed from clutch)
Drive belt
Poly V 7 groove (HR engine),
Poly V 6 groove (MR engine)
Model
CALSONICKANSEI
Name
Nissan A/C System Oil Type S (DH-PS)
Capacity
m
(US fl oz, lmp fl oz)
Total in system
150 (5.03, 5.3)
Compressor (Service part) charging
amount
150 (5.03, 5.3)
Type
HFC-134a (R-134a)
Capacity
kg (lb)
—
HA-160
< BASIC INSPECTION >
[MANUAL AIR CONDITIONER (K9K)]
DIAGNOSIS AND REPAIR WORKFLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
INFOID:0000000001098254
DETAILED FLOW
1.
LISTEN TO CUSTOMER COMPLAINT
Listen to customer complaint. (Get detailed information about the conditions and environment when the symp-
tom occurs.)
>> GO TO 2.
2.
VERIFY THE SYMPTOM WITH OPERATIONAL CHECK
Verify the symptom with operational check. Refer to
HAC-126, "Description & Inspection"
.
>> GO TO 3.
3.
GO TO APPROPRIATE TROUBLE DIAGNOSIS
Go to appropriate trouble diagnosis (Refer to
HAC-187, "Diagnosis Chart By Symptom"
>> GO TO 4.
4.
REPAIR OR REPLACE
Repair or replace the specific parts
>> GO TO 5.
5.
FINAL CHECK
Final check.
Is the inspection result normal?
YES
>> CHECK OUT
NO
>> GO TO 3.
REFRIGERATION SYSTEM
HA-161
< FUNCTION DIAGNOSIS >
[MANUAL AIR CONDITIONER (K9K)]
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FUNCTION DIAGNOSIS
REFRIGERATION SYSTEM
System Diagram
INFOID:0000000001098255
System Description
INFOID:0000000001098256
REFRIGERANT CYCLE
Refrigerant Flow
The refrigerant flows from the compressor, through the condenser with liquid tank, through the evaporator, and
back to the compressor. The refrigerant evaporation in the evaporator is controlled by an externally equalized
expansion valve, located inside the evaporator case.
Freeze Protection
To prevent evaporator frozen up, the evaporator air temperature is monitored, and the voltage signal to the
display and A/C auto amp. will make the A/C relay go OFF and stop the compressor.
REFRIGERANT SYSTEM PROTECTION
Refrigerant Pressure Sensor
The refrigerant system is protected against excessively high- or low-pressures by the refrigerant pressure sen-
sor, located on the condenser. If the system pressure rises above, or falls below the specifications, the refrig-
erant pressure sensor detects the pressure inside the refrigerant line and sends the voltage signal to the ECM.
ECM makes the A/C relay go OFF and stops the compressor when pressure on the high-pressure side
detected by refrigerant pressure sensor is over about 3,119 kPa (31.8 kg/cm
2
, 452 psi), or below about 118
kPa (1.2 kg/cm
2
, 17 psi).
Pressure Relief Valve
The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor.
When the pressure of refrigerant in the system increases to an unusual level [more than 3,628 kPa (37 kg/
cm
2
, 526 psi)], the release port on the pressure relief valve automatically opens and releases refrigerant into
the atmosphere.
LUBRICANT
RJIA1552E
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