2001 NISSAN X-TRAIL Service Repair Manual

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Page 3361 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
ATC-85
C
D
E
F
G
H
I
K
L
MA
B
AT C
Refrigerant Pressure Sensor (With Gasoline Engine)
The refrigerant pressure sensor is attached to the liquid tank (con-
denser).
Dual-Pres

Page 3362 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual ATC-86
TROUBLE DIAGNOSIS
Insufficient Cooling
EJS002FS
SYMPTOM: Insufficient cooling
INSPECTION FLOW
*1ATC-47, "PROCEDURE", see No. 1. *2ATC-64, "Air Mix Door Motor Circuit".*3AT C - 9

Page 3363 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
ATC-87
C
D
E
F
G
H
I
K
L
MA
B
AT C
*7ATC-78, "Magnet Clutch Circuit".*8AT C - 8 8 , "PERFORMANCE TEST
DIAGNOSES"
*9ATC-54, "Operational Check".
*10ATC-47,

Page 3364 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual ATC-88
TROUBLE DIAGNOSIS
PERFORMANCE TEST DIAGNOSES
*1ATC-90, "PERFORMANCE
CHART".*2ATC-90, "
PERFORMANCE
CHART".*3AT C - 9 2 , "
TROUBLE DIAGNOSES
FOR UNUSUAL PRESSURE".
*

Page 3365 of 3833

$NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS ATC-89 C D E F G H I K L MA B AT C *1ATC-135, "Removal and Installation for Compressor Clutch".*2 \ ATC-70, " Blower Motor Circuit" . *3 QR engine; EM-12, "Check$

Page 3366 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual ATC-90
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-ope

Page 3367 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
ATC-91
C
D
E
F
G
H
I
K
L
MA
B
AT C
Ambient Air Temperature-to-operating Pressure Table
60 - 7020 (68) 9.0 - 11.0 (48 - 52)
25(77) 14.0 - 16.5 (57 - 62)
30 (86) 18.8 - 21.5 (66 - 71)

Page 3368 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual ATC-92
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSES FOR UNUSUAL PRESSURE
Whenever system's high and/or low side pressure is unusual, diagnose using a manifold gauge. The marker
above the gauge scale in

ATC-92
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSES FOR UNUSUAL PRESSURE
Whenever system's high and/or low side pressure is unusual, diagnose using a manifold gauge. The marker
above the gauge scale in the following tables indicates the standard (usual) pressure range. Since the stan-
dard (usual) pressure, however, differs from vehicle to vehicle, refer to above table (Ambient air temperature-
to-operating pressure table).
Both High and Low-pressure Sides are Too High.
High-pressure Side is Too High and Low-pressure Side is Too Low.
Gauge indication Refrigerant cycle Probable cause Corrective action
Both high and low-pressure
sides are too high.Pressure is reduced soon after
water is splashed on con-
denser.Excessive refrigerant charge in
refrigeration cycleReduce refrigerant until speci-
fied pressure is obtained.
Air suction by cooling fan is
insufficient.Insufficient condenser cooling
performance
↓
1. Condenser fins are clogged.
2. Improper fan rotation of cool-
ing fan
●Clean condenser.
●Check and repair cooling fan
as necessary.
●Low-pressure pipe is not
cold.
●When compressor is stopped
high-pressure value quickly
drops by approximately 196
kPa (2 kg/cm
2 , 28 psi). It
then decreases gradually
thereafter.Poor heat exchange in con-
denser
(After compressor operation
stops, high pressure decreases
too slowly.)
↓
Air in refrigeration cycleEvacuate repeatedly and
recharge system.
Engine tends to overheat.Engine cooling systems mal-
function.Check and repair each engine
cooling system.
●An area of the low-pressure
pipe is colder than areas
near the evaporator outlet.
●Plates are sometimes cov-
ered with frost.
●Excessive liquid refrigerant
on low-pressure side
●Excessive refrigerant dis-
charge flow
●Expansion valve is open a lit-
tle compared with the specifi-
cation.
↓
1. Improper expansion valve
installation
2. Improper expansion valve
adjustmentReplace expansion valve.
AC359A
Gauge indication Refrigerant cycle Probable cause Corrective action
High-pressure side is too high and
low-pressure side is too low.
Upper side of condenser and
high-pressure side are hot,
however, liquid tank is not so
hot.High-pressure tube or parts
located between compressor
and condenser are clogged or
crushed.
●Check and repair or replace
malfunctioning parts.
●Check lubricant for contami-
nation.
AC360A

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