2001 NISSAN ALMERA TINO air condition

CSV613 Variable Displacement Compressor
GENERAL INFORMATIONNLHA02061. The CSV613 compressor differs from previous units. The vent temperatures of the CSV613 compressor
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 CSV613 compressor provides a means of“capacity”control.
2. The CSV613 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 condi-
tioning systems.
3. A“clanking”sound may occasionally be heard during refrigerant charge. The sound indicates that the tilt
angle of the swash plate has changed and is not a problem.
4. For air conditioning systems with the CSV613 compressor, the clutch remains engaged unless: the sys-
tem 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.
DESCRIPTION
CSV613 Variable Displacement Compressor
HA-13

Control OperationNLHA0123
NHA370
FAN CONTROL SWITCHNLHA0123S01This switch turns the fan ON and OFF, and controls fan speed.
MODE CONTROL KNOBNLHA0123S02This knob controls the outlet air flow.
TEMPERATURE CONTROL KNOBNLHA0123S03This knob allows you to adjust the temperature of the discharge air.
REAR WINDOW DEFOGGER SWITCHNLHA0123S07When illumination is ON, rear window is defogged.
AIR CONDITIONER (A/C) SWITCHNLHA0123S05The air conditioner switch controls the A/C system. When the switch is depressed with the fan ON, the com-
pressor will turn ON. The indicator lamp will also light.
The air conditioner cooling function operates only when the engine is running.
RECIRCULATION (REC) SWITCHNLHA0123S08Recirculation (REC) position: Interior air is recirculated inside the vehicle. (The indicator lamp will light.)
Fresh (FRE) position: Outlet air is drawn into the passenger compartment.
DESCRIPTION
Control Operation
HA-18

Circuit Diagram—Air ConditionerNLHA0127
YHA347
TROUBLE DIAGNOSES
Circuit Diagram—Air Conditioner
HA-26

Operational Check=NLHA0130The purpose of the operational check is to confirm that the system
operates properly.
CONDITIONS:NLHA0130S01+Engine running and at normal operating temperature.
NHA374
PROCEDURE:NLHA0130S021. Check BlowerNLHA0130S02011. Turn fan switch to 1-speed.
Blower should operate on 1-speed.
2. Then turn fan switch to 2-speed, and continue checking blower
speed until all speeds are checked.
3. Leave blower on 4-speed.
If NG, go to trouble diagnosis procedure for blower motor (HA-55).
If OK, continue with next check.
NHA375
2. Check Discharge AirNLHA0130S02021. Turn mode control knob to each position.
NHA376
2. Confirm that discharge air comes out according to the air dis-
tribution table at left.
Refer to“Discharge Air Flow”, HA-19.
If NG, go to trouble diagnosis procedure for mode door motor
(HA-47).
If OK, continue with next check.
TROUBLE DIAGNOSES
Operational Check
HA-41

NHA377
3. Check RecirculationNLHA0130S02031) Press the Recirculation (REC) switch. Recirculation indicator
should illuminate.
2) Listen for intake door position change.
If NG, go to trouble diagnosis procedure for intake door (HA-43).
If OK, continue with next check.
NHA378
4. Check Temperature DecreaseNLHA0130S02041. Turn the temperature control knob to full cold.
2. Check for cold air at discharge air outlets.
If NG, go to trouble diagnosis procedure for insufficient cooling
(HA-75).
If OK, continue with next check.
NHA379
5. Check Temperature IncreaseNLHA0130S02051. Turn the temperature control knob to full hot.
2. Check for hot air at discharge air outlets.
If NG, go to trouble diagnosis procedure for insufficient heating
(HA-83).
NHA380
6. Check Air Conditioner SwitchNLHA0130S0206Turn the fan control switch to the desired (1 to 4 speed) position
and push the A/C switch to turn ON the air conditioner.
The indicator lamp should come on when air conditioner is ON.
If NG, go to trouble diagnosis procedure for magnet clutch (HA-62).
TROUBLE DIAGNOSES
Operational Check (Cont’d)
HA-42

14 CHECK FAN SWITCH
Refer to HA-61.
OK or NG
OK©GO TO 15.
NG©Replace fan switch.
15 CHECK BODY GROUND CIRCUIT
Check circuit continuity between heater control panel harness terminal No. 13 and body ground.
NHA428
Continuity should exist.
If OK, check harness for short.
OK or NG
OK©INSPECTION END.
NG©Repair harness or connector.
RHA638H
ELECTRICAL COMPONENT INSPECTIONNLHA0192A/C RelayNLHA0192S01Check continuity between terminal Nos. 3 and 5.
Conditions Continuity
12V direct current supply between terminal Nos. 1 and 2 Yes
No current supply No
If NG, replace relay.
TROUBLE DIAGNOSES
Magnet Clutch (Cont’d)
HA-73

PERFORMANCE CHART=NLHA0150Test ConditionNLHA0150S01Testing must be performed as follows:
Vehicle location: Indoors or in the shade (in a well-ventilated place)
Doors: Closed
Door window: Open
Hood: Open
TEMP.: Max. COLD
Discharge Air: Face Vent
REC switch: (Recirculation) set
FAN speed: High speed
Engine speed: Idle speed
Operate the air conditioning system for 10 minutes before taking
measurements.
Test ReadingNLHA0150S02Recirculating-to-discharge Air Temperature TableNLHA0150S0201
Inside air (Recirculating air) at blower assembly inlet
Discharge air temperature at center venti-
lator
°C(°F) Relative humidity
%Air temperature
°C(°F)
50-6020 (68) 6.0 - 8.8 (43 - 48)
25 (77) 9.5 - 12.8 (49 - 55)
30 (86) 14.1 - 17.7 (57 - 64)
60-7020 (68) 8.8 - 11.6 (48 - 53)
25 (77) 12.8 - 16.2 (55 - 61)
30 (86) 17.7 - 21.1 (64 - 70)
TROUBLE DIAGNOSES
Insufficient Cooling (Cont’d)
HA-78

Low-pressure Side Sometimes Becomes Negative.NLHA0151S05
Gauge indication Refrigerant cycle Probable cause Corrective action
Low-pressure side sometimes
becomes negative.
AC354A
+Air conditioning system
does not function and
does not cyclically cool
the compartment air.
+The system constantly
functions for a certain
period of time after com-
pressor 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 refriger-
ant or replace refrigerant.
+Replace liquid tank.
Low-pressure Side Becomes Negative.NLHA0151S06
Gauge indication Refrigerant cycle Probable cause Corrective action
Low-pressure side becomes nega-
tive.
AC362A
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 problem is caused by
water or foreign particles.
+If water is the cause, ini-
tially cooling is okay. Then
the water freezes causing
a blockage. Drain water
from refrigerant or replace
refrigerant.
+If due to foreign particles,
remove expansion valve
and remove particles with
dry and compressed air
(not shop air).
+If either of the above
methods cannot correct
the problem, replace
expansion valve.
+Replace liquid tank.
+Check lubricant for con-
tamination.
TROUBLE DIAGNOSES
Insufficient Cooling (Cont’d)
HA-82