engine NISSAN ALMERA N15 1995 Service Manual

Replacethermocontrol
amp.
Note
No Note
CHECK POWER SUPPLY FORTHERMO
Co"NTROL AMP.
Refer toHA-49.
Reconnect
thermocontrolamp.harness
connector.
CHECK BODYGROUND CIRCUITFOR
THERMO CONTROL AMP.
Disconnect thermocontrolamp.harness
connector.
Does continuity existbetween thermo
control amp.harness terminal
@
and
body ground? OK
CHECK
CIRCUIT CONTINUITY BETWEEN
ECM (ENGINE CONTROL MODULE)
HARNESS TERMINAL @AND THERMO
CONTROL AMP.HARNESS TERMINAL
@.
Continuity shouldexist.
If OK, check harness forshort.

II

TROUBLE
DIAGNOSES
Diagnostic Procedure3(Conl'd)

(!)
~

RHA364F

:~~~~~;;:~:
@)~

LHO:
G/S'~
rn
(l

RHO: GY'L-.D--J
1

Thermo
control ECM(Engine control
amp. connector@) module)connector
@

~ II
ECM ?,CONNECTOOII

I
AIL ~_tR/L

II

II
DisconnectAICswitch harness connec-

tor.

Thermo
control
amp. connector @)
~
A/C

switch
connector
@

~
II
Note
LHO: GIS
RHO: GY LHO:
GIS
RHO: GY
RHA365F CHECK
CIRCUIT CONTINUITY BETWEEN
THERMO CONTROL AMP.HARNESS
TERMINAL
@
AND AICSWITCH HAR-
NESS TERMINAL
@.

Continuity shouldexist.
If OK, check harness forshort.

•

Replace
AICswitch.
Note
OK
OK
CHECK
AICSWITCH.
Refer toHA-63.
Disconnect fanswitch harness connec-
tor.
LHO: G/Y
RHO: LG/S
Fan
switch
connector
@ID

~
RHA366F CHECKCIRCUIT CONTINUITY BETWEEN
AIC SWITCH HARNESS TERMINAL @
AND FANSWITCH HARNESS TERMINAL

@.

Continuity shouldexist.
If OK, check harness forshort.
NC
switch
connector@

[ij

LHO: G/Y
RHO: LG/S
OK

@

(Go tonext page.)
Note:

If
the result isNG orNo after checking circuitcontinuity, repairharness or
connector.
HA-61

Circuitcheck
~
AlC switch
connector TROUBLE
DIAGNOSES
Electrical Components Inspection(Cont'd)
BLOWER RESISTOR

Check resistance betweenterminals.

Terminal No.
Resistance

EB
8

@
Approx.1.4-1.6Q

@
(1)

Approx.2.5-2.8Q

@
Approx.0.5-0.6Q

AIC SWITCH

Check continuity betweenterminals ateach switch position.

.
Switch
condition TerminalNo.
Continuity

A/C
EB
e

ON Yes

@
@

OFF No

RHA328F RECIRCULATION SWITCH

Check continuity betweenterminals ateach switch position.

I
I
I
I
I

'-

SHA732E
Terminal
No.
Recirculation
switch condition Continuity

EB
e

ON Yes

(1)
@

OFF No
ON No

@ @

OFF Yes

THERMAL PROTECTOR

THERMO CONTROL AMP.

1. Run engine, andoperate
AIC
system.
2. Connect thevoltmeter fromharness side.
3. Check thermo controlamp.operation showninthe table.

Evaporator outletairtemperature Thermoamp.
Tester
°C CF) operation
Decreasing to2.5 -3.5 (37-38) TurnOFF Approx.
12V
Increasing to4.0 -5.0 (39-41) Turn
On Approx.OV
Temperature
ofcompressor

°C
(OF)

Increasing toapprox. 145-155 (293 -311)
Decreasing toapprox. 130-140 (266 -284) Compressor
operation
Turn OFF
Turn ON

•

HA-63

Recoveredlubricant(HA-68)
SERVICE
PROCEDURES
HFC-134a (R-134a)ServiceProcedure (Cont'd)

Set therecoverylrecycling equip-
ment.
Discharge refrigerant into
recoveryl

recycling equipment.
Repair orreplace parts.
Evacuate theunwanted airincharg-
ing hoses.
Evacuating (over25minutes).
Check airtightness.

I

Partial charging
[approx. 200g(7.05 oz)J.
'-1
Repair.
Preliminary refrigerantleakcheck.

,-1

Complete charging[specified
amount -200 g(7.05 oz)J. Repair.

'-2

---C-h-e-c-k-f-o-r -re-f-r-ig-e-r-a-nt-Ie-a-k-s-.
--H
Repair.

--r.---~. '---.---

Check for
AIC
operation and
AIC

cooling performance
Remove servicecouplers from
AIC

service valves.
Recover refrigerant incharging
hoses.
Remove servicetools.
Note: '-1Before charging refrigerant, ensureengineisoff.
'-2 Before checking forleaks, startengine toactivate airconditioning systemthenturnitoff.
Service valvecapsmustbeattached tovalves (toprevent leakage).

HA-67
•

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

SERVICEPROCEDURES
Refrigerant Lines

• Refer topage HA-4regarding "Precautions forRefrigerant
Connection" .

GA ENGINE
RHO
MODEL

SEC. 271.274.276

fil10'20(1.0 .2.0, 87.174)
8
mm
dia.

Liquidtank
Condenser Expansion
valve

[O;J
15-25 (1.5 -2.5, 11-18)
12
mm
dia.

Low-pressure(Suction)
service valve

o
(Tightening torque)

o
0
(Wrench size)

o
(O-ring size)

[O;J :
N.m (kg-m, ft-Ib)

rn :
20 •29 (2.0 •3.0, 14-22)

fiI :
N.m (kg-m, in-Ib)

IBl :
8 •11 (0.8 -1.1, 69-95)

[C] :
10 -20 (1.0 -2.0, 87-174)
~ :3 -4 (0.3 -0.4, 26-35)

RHA332F
HA-70

S~~~~:~::--_~S~ER ~V~1~C~E~P;.R;O~C¥E¥,D~U~fo;;r.:i) _

R ENGINE RHDMO Ref" RES

5

DEL
ngerant
L"

EC. 271.274 '276
mes(Cont' d)
Low-pressure (Suct'
Ion)
se'

rVlce valve
High-pressure (0'Ischarg )
e service valve
Coolingunit
Dual-pressure switch
Liquid tank
Condenser

o
(Tightening t

o
orque)

o
(Wrench size)

o
(D-ring size)

~: N'm(k
g-m,
ft-Ib)

r.:.1 :
25 -34 (

IiiiI
2.5-3.5 18

~ :N.m ( ,-25)

kg-m, in-Ib)

(SJ :
10 -20 (1

'Cl .
.0-2.0, 87-174)

~ .8 -11 (0
.8
-1.1 69

1)1 . '-95)
lMJ .2.9 .3 9 (

. 0.3 -04 26

., -35)
RHA371F
HA-71
•

SERVICEPROCE

R
f•
DURES
e ngerant
L.

mes (Cont'd)
CD ENGINE RHOMODEL

SEC. 271'274-276

iii
10-20 (1.0 -2

8
mm
dia. .0,87-174)

Expansion valve
Liquid tank

[SJ

\~
il!1d

I

I

Compressor Condenser
[O.J

15-25 (1.5 -2
12
mm
d' .5,11-18)

la.

Low-pressure (
service valveSuction) Hi~h-pressure
(Discharge)
service valve

D
(Tightening t
DO orque)
(Wrench size)

o
(O-ring size)

[O.J :
N'm (k
g-m,
ft-Ib)

a :
20 -29 (20

iii :
N'm .-3.0, 14-22)

(kg-m, in-Ib)

[SJ :
8 -11 (0.8 -1

ICl :
10 .1,69-95)
- 20 (1.0 •2

[Q] :
3 _4 .0,87-174)

(0.3 -04 26

.,
•35)

RHA333F
HA-72

SERVICEPROCEDURES
Refrigerant Lines(Cont'd)

GA ENGINE lHDMODEL

SEC. 271.274.276

Low-pressure (Suction)servicevalve

~
10-20 (1.0 -2.0, 87-174)
6 mm (0.24 in)dia.

Thermo controlamp.

•

Dual-pressure
switch
~ Liquid tank
High-pressure
(Discharge) servicevalve
High-pressure
(Discharge) servicevalve

o
(Tightening torque)
D D (Wrench size)
D (O-ring size)
~ :N'm (kg-m, ft-lb)

~ :25 -34 (2.5 -3.5, 18-25)

~ :N'm (kg-m, in-Ib)

rm :
10 -20 (1.0 -2.0, 87-174)
~ :8 •11 (0.8 •1.1, 69•95)
~ :2.9 •3.9 (0.3 -0.4, 26•35)
~
15•20 (1.5 -2.0, 11-14)
~ 8
mm
(0.31
in)
die.

___ ==- - ~
20-25

(2.0 -2.5, 14-18)

."""\ ~t;,
12mm (0.47 in)dia.

Expansion valve
RHA334F
HA-73

SERVICEPROCEDURES
Refrigerant Lines
(Cont'd)

CD ENGINE LHDMODEL
SEC. 271'274'276

[O.J
15. 20(1.5 -2.0, 11-14)
8
mm
(0.31
in)
dia.

[O.J
20-25 (2.0 -2.5, 14-18)
12 mm (0.47 in)dia.
~ 10•20 (1.0 -2.0, 87•174)
6 mm (0.24 in)dia.

Thermo controlamp.
High-pressure (Discharge)servicevalve

o
(Tightening torque)

o
0
(Wrench size)

o
(O-ring size)

[O.J :
N'm (kg-m, It-Ib)

B :
25 -34 (2.5 -3.5, 18-25)

~ :N'm (kg-m, in-Ib)

[SJ
:10 -20 (1.0 -2.0,87 -174)

[Q :
8 -11 (0.8 -1.1, 69-95)

[Q] :
2.9 •3.9 (0.3 -0.4, 26-35)

HA-74
Cooling
unit
Low-pressure (Suction)service
valve

Liquid tank

RHA335F

GAengine models
SEC.
274.275

~ :N.m (kg-m, ft-Ib)

CD engine models
SEC.
274.275

~ :N.m (kg-m, ft-Ib)
SERVICE
PROCEDURES
Compressor Mounting
HA-75 ZHA182AB
ZHA183AA •