NISSAN ALMERA N15 1995 Service Manual

TROUBLEDIAGNOSES
Trouble Diagnoses forAbnormal Pressure
(Cont'd)

Correctiveaction
• Remove foreignparticles
by using compressed air.
• Check lubricant forcontam-
ination.
• Check andrepair malfunc-
tioning parts.
• Check lubricant forcontam-
ination.
Replace compressor.
• Drain water fromrefriger-
ant orreplace refrigerant.
• Replace liqUidtank.
Expansion
valvecloses alit-
tle compared withthespecifi-
cation.

1

Water ismixed withrefriger-
ant. Probable
cause

1

CD
Improper expansion valve
adjustment

@
Malfunctioning thermal
valve

@
Outlet andinlet maybe
clogged.
Low-pressure pipeisclogged
or crushed.
Compressor pressureopera-
tion isimproper.

1

Damaged insidecompressor
packings Refrigerant doesnotdis-
charge cyclically.

1

Moisture isfrozen atexpan-
sion valve outlet andinlet.
Refrigerant
cycle
There isabig temperature
difference betweenexpansion
valve inletandoutlet while
the valve itselfisfrosted.
An area ofthe low-pressure
pipe iscolder thanpreas
near theevaporator outlet.
• Air conditioning system
does notfunction anddoes
not cyclically coolthecom-
partment air.
• The system constantly func-
tions foracertain periodof
time after compressor is
stopped andrestarted.
Air
flow volume isnot

AC353A
enough oristoo low.
@ Gauge
indication
Both high- andlow-pressure
sides aretoolow.

l!]

Low-pressure sidesome-
times becomes negative.

Ii

AC354A
•

HA-29

TROUBLEDIAGNOSES
Trouble Diagnoses forAbnormal Pressure
(Conl'd)

Gauge indication
Low-pressure sidebecomes
negative.

Ii

AC362A
Refrigerant
cycle
liquid tankorfront/rear side
of expansion valve'spipeis
frosted ordewed. Probable
cause
High-pressure sideisclosed
and refrigerant doesnotflow.

L

Expansion valveorliquid
tank isfrosted. Corrective
action
Leave thesystem atrest until
no frost ispresent. Startit
again tocheck whether or
not theproblem iscaused by
water orforeign particles .
• Ifwater isthe cause, ini-
tially cooling isokay. Then
the water freezes, causing
a blockage. Drainwater
from refrigerant orreplace
refrigerant.
• Ifdue toforeign particles,
remove expansion valve
and remove theparticles
with dryand compressed
air (not shop air).
• Ifeither ofthe above meth-
ods cannot correct the
problem, replaceexpansion
valve .
• Replace liquidtank.
• Check lubricant forcontam-
ination.

HA-30

ENGINECOMPARTMENT TROUBLE
DIAGNOSES
Harness Layout
RHA322F
HA-31
•

HA-32

Thermocontrolamp.
(M61)

\--7/
LHD
models TROUBLE
DIAGNOSES
Harness Layout
(Cont'd)

I
HA-33
,-

.....

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RHA324F
•

TROUBLEDIAGNOSES
Circuit Diagram -Air Conditioner
DUAL-PRESSURE
SWITCH
AIR

CONDITIONER
RELAY
THERMO
CONTROL
AMP.

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SWITCH

1

AIT models

MIT
models
For Europe andIsrael
Except
@

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Except
f
or Europe, Israe 1and Austra 1ia
GA eng ine
f
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system

HHA001
HA-34

TROUBLEDIAGNOSES
Circuit Diagram -Air Conditioner (Cont&#39;d)

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MODULE)

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(SR20DE engine
AIT
models)
L
~

(GA engine except forAustralia
and SR20DE engine
MIT
models)

•

M

COOLING

FAN

RELAY-2

@

COOLING

FAN

MOTOR-2

@

COOLING
FAN
RELAY-l
COOLING COOLING
FAN FAN
MOTOR-l MOTOR-2

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CONTROL MODULE)

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ECM(ENGINE
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(C020 engIne) (GAI6DE
engIneforAustralIa)

HHA014

HA-35

TROUBLEDIAGNOSES
Wiring Diagram -HEATER -

HA-HEATER-01

<0:
LHOmodels
Refer toEL-POWER.
(8):
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@:
ForEurope andIsrael

@:
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SWITCH

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B CONNECTOR-4

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HHA012
HA-36

TROUBLEDIAGNOSES
Wiring Diagram -HEATER -(Conl&#39;d)

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: (b)
@ :

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Refer
tolast page
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HA-HEATER-02

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LHDmodels

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SWITCH

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~

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FUSE
BLOCK
(JIB)

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•

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IGNITION
SWITCH

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page ~

HHA013
HA-37

TROUBLEDIAGNOSES
Wiring Diagram -
Ale -

HA-A/C-01

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~-06

FAN

SWITCH

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n=tn

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or
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~
HHA002
HA-38