1995 NISSAN ALMERA N15 check oil

TROUBLEDIAGNOSES
Preliminary Check
PRELIMINARY CHECK1

Ale
does notblow coldair.
DOESAIRFLOW FROM VENTS?
Condition
• Engine running atoperating tem-
perature .
• Ignition switch,AICswitch, and
fan switch areON.
• Mode control knobisin VENT
mode andtemperature control
knob isinfull cold position.
Yes IS
BLOWER MOTOROPERATING
NORMALLY?
Yes
CHECKBLOWER
MOTOR OPERATION.
Go toDiagnostic Pro-
cedure 1.(HA-50)
CHECK COMPRESSOR BELTTEN-
SION. Refer to"Checking DriveBelts" in
MA section.
CHECK REFRIGERANT.
Connect manifold gaugethen
check system pressure.
Refer toPerformance Chart.(HA-

26)

NG CHECK
THERMO CONTROL AMP.
OPERATION.
Refer toElectrical Components
Inspection. (HA-63)
CHECK
FOREVAPORATOR COIL
FREEZE UP.
Remove intakeunit.Check ifevap-
orator freezes.
NG OK
(Freeze up.) (Doesnot
freeze up.)
CHECK VENTILATOR
DUCT FORAIR
LEAKS.
OK
Go toPerformance
Test Diagnoses. (HA-

24)
NG
CHECK
REFRIGERATION CYCLE
PRESSURE WITHMANIFOLD
GAUGE CONNECTED.
Refer toPerformance Chart.(HA-
26) OK
CHECK
COMPRESSOR OPERA-
TION.
OK
OK NG
Adjust orreplace
compressor belt.
Refer toMA section
("ENGINE
MAINTENANCE").
CHECKFORREFRIG-
ERANT LEAKS CHECK
WATER COCKOPERA-
TION.
Warm upengine beforechecking.
Refer toHA-64.
NG

Adjust orreplace watercock.
OK
Go toDiagnostic Procedure3.
(HA-54) CHECK
TEMPERATURE CONTROL
CABLE.
Refer toControl Linkage Adjust-
ment. (HA-64) NG
Adjust temperature controlcable.
OK
VISUALLY INSPECTAIRMIX
DOOR.
Access byremoving instrument
panel. NG
Replace airmix door.
OK
CHECK THERMO CONTROL AMP.
OPERATION. Refer toElectrical Components
Inspection. (HA-63)
HA-20

TROUBLEDIAGNOSES
Performance TestDiagnoses (Cont'd)
@

Malfunctioning blowermotorfan
Loose fan!lmproper contactoffan
and case!Deformed fan Malfunctioning
electricalcircuit
Discontinued wiringorcomponent
circuits orpoor connection!
Malfunctioning resistor,amplifier,
etc.! Burned outfuse orlow bat-
tery voltage Malfunctioning
blowermotor
internal circuit
Magnet clutchdoesnotengage.
CHECK MAGNET CLUTCH
(coil circuit, disc-to-pulley clear-
ance). Magnet
clutchslipping
Beltslipping
CHECK COMPRESSOR BELTAND
BELT TENSION.
CHECK ELECTRICAL CIRCUIT
(wiring, components circuit).
CHECK ACTIVATION OFSAFETY!
PROTECTION DEVICES(suchas
pressure switch,etc.). Malfunctioning
internalpartsof
clutch, compressor
Foreign particles onclutch fric-
tional surface orexcessive disc
clearance
Malfunctioning electricalcircuit
(poor connection, lowbattery
voltage, etc.)

HA-25
•

TROUBLEDIAGNOSES
Diagnostic Procedure3
SYMPTOM: Magnetclutchdoesnotengage when
Ale

switch andfanswitch areON. -For GAand SR
engines
• Perform PRELIMINARY CHECK1before referring tothe fol-
lowing flowchart.
Replacemagnetclutch.
Refer toHA-77, HA-80.
Check
magnet clutchcoil.

NG

Yes

m

CHECK POWER SUPPLY FORCOMPRES-
SOR. Disconnect compressor harnessconnec-
tor. Do approx. 12volts existbetween com-
pressor harness terminal
ill
and body
ground?
RHA354F

s

Compressor
connector
@QD-2

~
RHA357FRHA356F
NG
CHECK POWER SUPPLY
CIRCUIT AND7.5A(No.

[Q]
and ~)FUSES AT
FUSE BLOCK.
Refer toEL section ("Wir-
ing Diagram", "POWER
SUPPLY ROUTING").
Replace AICrelay.

I

Replace thermalprotector.
[;J
Yes CHECK THERMAL PRO-
TECTOR.
Check circuit continuity
between thermalprotector
harness terminal
ill
and
compressor harnesstermi-
nal
ill.

Continuity shouldexist.
If OK, check harness for
shorl.
No
NG
CHECK
CIRCUIT CONTINUITY BETWEEN
AIC RELAY HARNESS TERMINAL @
AND THERMAL PROTECTOR HARNESS
TERMINAL
ill.

Continuity shouldexist.
If OK, check harness forshorl. Note
Yes
CHECK
POWER SUPPLY FORAIC
RELAY.
Disconnect AICrelay.
Do approx. 12volts exist!)etween AIC
relay harness terminals
ill,
@
and
body ground?
CHECK AICRELAY AFTER DISCON-
NECTING IT.
Refer toHA-64.
Disconnect
AICrelay. NoNo

[;)

CHECK POWER SUPPLY FORTHERMAL
PROTECTOR.
Disconnect thermalprotector harness
connector. Do approx. 12Vexist between thermal
protector harnessterminal
ill
and body
ground?
OK

@:
GAengine (forEurope, Israeland
Australia) andSRengine

@:
Except above
RHA355F

~ i5@a

Thermal protector
AIC
relay
connector
@-1
connector
(ill)

,"R~~t
[1[]

lIR
lIR
Thermal
protector
connector
@QD-1

~
Thermal protector Compressor
connector
@QD-1
connector
@QD-2

~ ~

~ ~ ls

~

~15~
AlC relay
connector
(ill)

~lIY
RHA358FNote:
If the result isNG after checking circuitcontinuity, repairharness orconnec-
tor.
HA-54

•

Replace
dual-pressure
switch.
Note:

If
the result isNG after
checking circuitcontinuity,
repair harness orconnector.
NG
Note
Note
OK
OK
CHECK DUAL-PRESSURE SWITCH.
Refer toHA-64.
Disconnect thermocontrolamp.har-
ness connector.
CHECK
CIRCUIT CONTINUITY
BETWEEN ECM(ECCS CONTROL MOD.
ULE) HARNESS TERMINAL
@
or
@

AND DUAL-PRESSURE SWITCHHAR-
NESS TERMINAL @.
Continuity shouldexist.
If OK, check harness forshort.
OK
@ (Go to
m .)

Disconnect
ECM(ECCS contraImodule)
harness connector.
Disconnect dual-pressure switchhar-
ness connector.
CHECK CIRCUIT CONTINUITY BETWEEN
DUAL.PRESSURE SWITCHHARNESS
TERMINAL @AND THERMO CONTROL
AMP. HARNESS TERMINAL
@.

Continuity shouldexist.
If OK, check harness forshort.
Reconnect dual-pressure switchharness
connector.
o
CHECK
COILSIDECIRCUIT OFAIC No
Disconnect A/Crelay.
~
RELAY. Disconnect
ECM(ECCS
Do approx. 12volts exist between ECM control
module) harness
(ECCS control module) harnessterminal connector.

@
or@ and body ground?

l

Yes
~Note
CHECK CIRCUIT CONTI-
NUITY BETWEEN AIC
RELAY HARNESS TERMI-
NAL @AND ECM (ECCS
CONTROL MODULE)HAR-

.
NESSTERMINAL
@
or
@.
Continuity shouldexist.
(I) If
OK, check harness for
CHECK VOLTAGE FORECM (ECCS con- short.
tral module) .
Do approx. 12volts exist between ECM
NoCHECK ECM(ECCS con-
(ECCS
control module) harnessterminal

-..

@, or@ and body ground?
trolmodule). RefertoEC
section.
Yes
TROUBLE
DIAGNOSES
Diagnostic Procedure3(Conl'd)
@
~

I
Reconnect AICrelay. _

Ii
!

RHA359F
RHA362F
II

RHA361F
G
Dual-
pressure
switch
connector@
~.

S8

Thermo
control amp.

OOD
tm
@

•
:GA engine for
Australia :15 (Y)
Others :11 (G)
RHA360F

S8

Dual-
pressure
switch
connector
@

d))
~15@a

EGM (EGGS control
module) connec1or@
EGM
E[CONNECTORII

41 or21

.

II

•
:GA engine for
Australia: 15(Y)
Others :11 (G)
21: GAengine for
Australia (G)
41: Others (GY)

~&)
~Io

AlG relay EGM(EGGS control
connector@ module)connector@
ci
II
EGM
]g
CONNECTOR
II

Y

21: GAengine for
Australia (G)
41: Others (GY)

Ii

~i)@a~
EGM (EGGS control
module) connector @

II
EGM
]g
CONNECTOR
II

o
III

~i)
@a~

EGM (EGGS control
module) connector@

II
EGM 'gCONNECTORII

41 or21

.

RHA363F HA-55

~CONNECT ~
(gl

l41E) ~
@

EGM (EGGS control
module) connector
@

II
EGM
J9"CONNECTORII

11 TROUBLE
DIAGNOSES
Diagnostic Procedure3
(Co nt'd)

~ ~

I
Reconnect AICrelay_. _..._

II
!

EGM (EGGS control Dual-pressure
module) connector
@
switch connector
@

II
ECM
Ej'coNNEcTORII ~

11

GSHA734E
Note
CHECK CIRCUIT CONTINU-
ITY BETWEEN ECM(ECCS
CONTROL MODULE)HAR-
NESS TERMINAL @AND
DUAL-PRESSURE SWITCH
HARNESS TERMINAL
CD.

Continuity shouldexist.
If OK, check harness for
short. Disconnect
ECM(ECCS
control module) harness
connector. Disconnect dual-pressure
switch harness connector.

II

CHECK
COILSIDECIRCUIT OFAIC
RELAY.
Do approx. 12volts exist between ECM
(ECCS control module) harnesstermi.
nal @and body ground?
Yes
G

II

G
Dual-pressure switch
connector@ RHA446F
NC relay
connector@ ~OK
CHECK
DUAL-
PRES-
SURE
SWITCH. Refer to
HA-64. NG

--+
Replace
dual-
pressure
switch.
Note
"='RHA443F
~i)~@
EGM (EGGS control
module) connector@

II
EGM
E[CONNECTORII

44

L

R/L
L

RHA414F

II
CHECK VOLTAGE FORECM
(ECCS control module).
Do approx. 12volts exist between ECM
(ECCS control module) harnesstermi-
nal No.
@
and body ground?
Yes
Disconnect ECM(ECCS control mod-
ule) harness connector.
Disconnect thermocontrol amp.har-
ness connector.
No

CHECK
CIRCUIT CONTINU-
ITY BETWEEN AICRELAY
HARNESS TERMINAL
@

AND DUAL-PRESSURE
SWITCH HARNESS TERMI-
NAL @.
Continuity shouldexist.
If OK, check harness for
short.
CHECK ECM(ECCS control
module). (RefertoEC sec-
tion.)
Yes

@

Note:
If the result isNG after checking circuilcontinuity, repairharness orconnec-
tor.
HA-56

TROUBLEDIAGNOSES
Diagnostic Procedure3(Cont'd)
SYMPTOM: Magnetclutchdoesnotengage whenAle
switch andfanswitch areON. -For CDengine
• Perform PRELIMINARY CHECK1before referring tothe fol-
lowing flowchart.
Compressor
connector
@Q7>-2

~ B
Thermal protector
connector
@Q7>-1

~

LlR
RHA354F
RHA355F
m

CHECK POWER SUPPLY FORCOMPRES-
SOR. Disconnect compressor harnessconnec-
tor. Do approx. 12volts exist between com-
pressor harness terminal
CD
and body
ground?
No
(;J
CHECK POWER SUPPLY FORTHERMAL
PROTECTOR.
Disconnect thermalprotector harness
connector. Do approx. 12Vexist between thermal
protector harnessterminal
G)
and body
ground?
NoYes
Check magnet clutchcoil.
OK
Replace magnetclutch.
Refer toHA-77.

[!]

Yes CHECK THERMAL PRO-
TECTOR. Check circuitcontinuity
between thermalprotector
harness terminal
G)
and
compressor harnesstermi-
nal
CD.

Continuity shouldexist.
If OK. check harness for
short.
NG
Disconnect AICrelay.
I

Replace thermalprotector.
Thermal protector Compressor
connector@-1 connector@QD-2

j. ~~
1-

I1iJ

RHA356F Note
CHECK CIRCUIT CONTINUITY BETWEEN
AIC RELAY HARNESS TERMINAL
@)

AND THERMAL PROTECTOR HARNESS
TERMINAL G).
Continuity shouldexist.
If OK. check harness forshort.
OK
Thermal
protector AlCrelay
connector @:>-1connector
@])

~ ciP

~/R ~
1

~L1R
RHA357FCHECK
POWER SUPPLY FORAIC
RELAY.
Disconnect AICrelay.
Do approx. 12volts exist between AIC
relay harness terminals
CD.
@and
body ground?
Yes
CHECK AICRELAY AFTERDISCON-
NECTING IT.
Refer toHA-64. No
NG CHECK
POWER SUPPLY
CIRCUIT AND7.5A(No.

~J
and
00)
FUSES AT
FUSE BLOCK.
Refer toEL section ("Wir-
ing Diagram", "POWER
SUPPLY ROUTING").
Replace AICrelay.

•

RHA358F OK

@

(Go tonext page.)
Note:
If
the result isNG orNo after checking circuitcontinuity, repairharness or
connector.
HA-59

DisconnectECM(Engine
control module) harness
connector. Disconnect dual-pressure
switch harness connector .

Ii

~i)~@
ECM (Engine control
module) connector
@

II
ECM
E[CONNECTORII

8

G TROUBLE
DIAGNOSES
Diagnostic Procedure3(Cont'd)

@

+
I
Reconnect AICrelay.

Ii
r---

CHECK COILSIDECIRCUIT OFAIC No
RELAY.
Do approx. 12Yolts existbetween ECM
(Engine controlmodule) harnesstermi-
nal
@
and body ground?
G
G
ECM
(Engine control Dual-pressure
module) connector ~switch connector
@)

II
ECM
HCONNECTORII ~

8
[iJ
Note
CHECK CIRCUIT CONTINU-
ITY BETWEEN ECM
(ENGINE CONTROL MOD-
ULE) HARNESS TERMINAL
@ AND DUAL-PRESSURE
SWITCH HARNESS TERMI-
NAL G).
Continuity shouldexist.
If OK, check harness for
short.
Yes
....
RHA370F
OK
Dual-pressure switch
connector@ RHA368F
AlC relay
connector@ CHECK
DUAL-
PRES-
SURE
SWITCH. Refer to
HA-64.
NG

Replace
dual-
pressure
switch.
Note
~i5~~
ECM
11
CONNECTOR
II

31

o
L

II

ECM
(Engine control
AIL

module)@ L
RHA414F

o
CHECK VOLTAGE FORECM (Engine
control unit).
Do approx. 12YOIts exist between ECM
(Engine controlmodule) Ilarnesstermi-
nal No.
@
and body ground?
Yes

-=
Disconnect ECM(Engine controlmod-
ZHA158AA ule)harness connector.
Disconnect thermocontrolamp.har-
ness connector. No
CHECK
CIRCUIT CONTINU-
ITY BETWEEN AICRELAY
HARNESS TERMINAL
@

AND DUAL-PRESSURE
SWITCH HARNESS TERMI-
NAL
@.

Continuity shouldexist.
If OK, check harness for
short.
CHECK ECM(Engine con-
trol module). (RefertoEC
section.)
@
(Go tonext page.)
Note:
If the result isNG orNo after checking circuitcontinuity, repairharness or
connector.
HA-60

SERVICEPROCEDURES

Maintenance ofLubricant Quantityin
Compressor

The lubricant inthe compressor circulatesthroughthesystem
with therefrigerant. Addlubricant tocompressor whenreplac-
ing any component orafter alarge gasleakage occurred. Itis
important tomaintain thespecified amount.
If lubricant quantityisnot maintained properly,thefollowing
malfunctions mayresult:
• Lack oflubricant: Maylead toaseized compressor
• Excessive lubricant:Inadequate cooling(thermal exchange
interference)

LUBRICANT

Name: Nissan
Ale
System OilType R
Part number:
KLHOO-PAGRO

CHECKING ANDADJUSTING

Adjust thelubricant quantityaccording tothe flowchart shown
below.

START
~

Can lubricant returnoperation beper- Yes
Perform lubricant returnoperation, proceeding asfollows:
formed?
-+

• AIC
system worksproperly. 1.Start engine, andsetthefollowing conditions:
• There isno evidence ofalarge amount •Test condition
of lubricant leakage. Engine
speed:Idlingto1,200 rpm
AlC orAUTO switch: ON
No Blowerspeed:Max.position
Temp. control: Optional [Setsothat Intake airtemperature is
25 to30°C (77to86°F).]
2. Next itemisfor V-5 orV-6 compressor. Connectthemanifold
gauge, andcheck thatthehigh pressure sidepressure is588 kPa
(5.9 bar, 6kg/cm
2,
85psi) orhigher,

If
less than thereference level,attach acover tothe front faceof

~
the
condenser toraise thepressure.
Should thecompressor bereplaced?
3.

Perform lubricant returnoperation forabout 10minutes.

4.
Stop engine.
No Yes
CAUTION:

If
excessive lubricantleakageisnoted, donot perform thelubricant
return operation.

@

(Go tonext page.)
Is there anypart tobe replaced? Yes
Afterreplacing anyof.the following majorcomponents, addthecor-
(Evaporator, condenser,liquidtankorin
-..

rectamount oflubricant tothe system.
case there isevidence ofalarge amount Amountoflubricant tobe added
of lubricant leakage.)

Lubricanttobe added to

No
Part
replaced system
Remarks
Amount oflubricant
mf (Imp IIoz)
Evaporator 75(2.6)

-

Condenser 75(2.6)
-

Liquid tank 5(0.2) Add
ifcompressor isnot
replaced. '1

Carry outthe
AIC
performance test.

~
In
case ofrefrigerant leak 30
(11) Largeleak

-
Small
leak'2

.

*1:Ifcompressor isreplaced. additionoflubricant isincluded inthe
flow chart.
*2: Ifrefrigerant leakissmall, noaddition oflubricant isneeded.

HA-68