2001 NISSAN ALMERA N16 Electronic Repair Manual

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Page 2049 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual PERFORMANCE CHART=NJHA0150Test ConditionNJHA0150S01Testing must be performed as follows:
Vehicle location: Indoors or in the shade (in a well-ventilated place)
Doors: Closed
Door window: Open
Hood: Op

Page 2050 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual Ambient Air Temperature-to-operating Pressure Table=NJHA0150S0202
Ambient air
High-pressure (Discharge side)
kPa (bar, kg/cm
2, psi)Low-pressure (Suction side)
kPa (bar, kg/cm2, psi) Relative humidity

Page 2051 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual Both High- and Low-pressure Sides are Too High.NJHA0151S01
Gauge indication Refrigerant cycle Probable cause Corrective action
Both high and low-pressure sides
are too high.
AC359A
+Pressure is reduce

Page 2052 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual High-pressure Side is Too Low and Low-pressure Side is Too High.NJHA0151S03
Gauge indication Refrigerant cycle Probable cause Corrective action
High-pressure side is too low and
low-pressure side is t

High-pressure Side is Too Low and Low-pressure Side is Too High.NJHA0151S03
Gauge indication Refrigerant cycle Probable cause Corrective action
High-pressure side is too low and
low-pressure side is too high.
AC356A
High and low-pressure sides
become equal soon after
compressor operation stops.Compressor pressure opera-
tion is improper.
¯
Damaged inside compressor
packingsReplace compressor.
No temperature difference
between high and low-pres-
sure sidesCompressor pressure opera-
tion is improper.
¯
Damaged inside compressor
packings.Replace compressor.
Both High- and Low-pressure Sides are Too Low.NJHA0151S04
Gauge indication Refrigerant cycle Probable cause Corrective action
Both high- and low-pressure sides
are too low.
AC353A
+There is a big temperature
difference between
receiver drier outlet and
inlet. Outlet temperature is
extremely low.
+Liquid tank inlet and
expansion valve are
frosted.Liquid tank inside is slightly
clogged.+Replace liquid tank.
+Check lubricant for con-
tamination.
+Temperature of expansion
valve inlet is extremely
low as compared with
areas near liquid tank.
+Expansion valve inlet may
be frosted.
+Temperature difference
occurs somewhere in
high- pressure sideHigh-pressure pipe located
between receiver drier and
expansion valve is clogged.+Check and repair malfunc-
tioning parts.
+Check lubricant for con-
tamination.
+Expansion valve and liquid
tank are warm or only cool
when touched.Low refrigerant charge
¯
Leaking fittings or compo-
nentsCheck refrigerant for leaks.
Refer to ªChecking Refriger-
ant Leaksº, HA-99.
There is a big temperature
difference between expan-
sion valve inlet and outlet
while the valve itself is
frosted.Expansion valve closes a
little compared with the
specification.
¯
1. Improper expansion valve
adjustment
2. Malfunctioning thermal
valve
3. Outlet and inlet may be
clogged.+Remove foreign particles
by using compressed air.
+Check lubricant for con-
tamination.
An area of the low-pressure
pipe is colder than areas
near the evaporator outlet.Low-pressure pipe is clogged
or crushed.+Check and repair malfunc-
tioning parts.
+Check lubricant for con-
tamination.
Air flow volume is not
enough or is too low.Evaporator is frozen.+Check thermo control
amp. operation.
+Replace compressor.
TROUBLE DIAGNOSES
Insufficient Cooling (Cont'd)
HA-80

Page 2053 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual Low-pressure Side Sometimes Becomes Negative.NJHA0151S05
Gauge indication Refrigerant cycle Probable cause Corrective action
Low-pressure side sometimes
becomes negative.
AC354A
+Air conditioning syst

Page 2054 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual Insufficient Heating
TROUBLE DIAGNOSIS PROCEDURE FOR INSUFFICIENT HEATING=NJHA0152SYMPTOM: Insufficient heating.
INSPECTION FLOW
NHA391
*1: LC-17 (QG),
LC-43 (YD)
*2: LC-12 (QG),
LC-37 (YD)*3: LC-15 (

Page 2055 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual Noise
TROUBLE DIAGNOSIS PROCEDURE FOR NOISE=NJHA0158SYMPTOM:
+Noise
INSPECTION FLOW
RHA925H
*1: HA-91
*2: HA-92
*3: HA-86*4: EM-15 (QG),
EM-84 (YD)*5: LC-17 (QG),
LC-43 (YD)
TROUBLE DIAGNOSES
Noise
HA

Page 2056 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual HFC-134a (R-134a) Service ProcedureNJHA0159SETTING OF SERVICE TOOLS AND EQUIPMENTNJHA0159S01Discharging RefrigerantNJHA0159S0101WARNING:
Avoid breathing A/C refrigerant and lubricant vapor or mist. Ex

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