1995 NISSAN ALMERA N15 ignition

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

PRELIMINARY CHECK2
Air outlet doesnotchange. TROUBLE
DIAGNOSES
Preliminary Check(Cont'd)
TURN IGNITION SWITCHANDFANSWITCH ON.DOES AIR No
Adjustmodecontrol cable.Referto
COME OUTNORMALLY FROMEACHDUCTWHEN EACH HA-64.
MODE SWITCH ISPUSHED?
Discharge airflow
Switch Airoutlet/distribution
model RHOmodels
LHDmodels
indicator FaceFoot
Defroster FaceFoot
Defroster

iI
100%

-

-
100%

-
-

.

,7,./
60%40%

-

60%40%

-

,~
-

80%
20%14%65% 21%

,~
-

60% 40%
13%57% 30%

\tEl
-

-

100%

-
-
100%
res
INSPECTION END
HA-21
•

PRELIMINARY CHECK4
Insufficient heating TROUBLE
DIAGNOSES
Preliminary Check(Cont'd)

DOES AIRFLOW FROM FOOTAREA?
Condition:
• Vehicle atoperating temperature .
• Ignition switchandfancontrol knobareON.
• Mode control knobisin FOOT modeandtem-
perature controlknobisinfull hotposition.
Check thefollowing:
• Engine coolant level(Refer toMA section)
• Hoses forleaks orkinks
• Radiator cap(Refer toLC section)
• Air incooling system.
CHECK WATER COCKOPERATION.
Warm upengine before
checking.

Refer toHA-64.

OK

CHECK TEMPERATURE CONTROLCABLE.
Refer toControl Linkage Adjustment. (HA-64)
VISUALLY INSPECTAIRMIX DOOR.
Access byremoving instrument panel.

OK

Check byfeel theheater inletandoutlet hoses.
No
NG
NG
NG
NG
CHECK
BLOWER MOTOR
OPERATION.
Perform
Diagnostic Proce-
dure 1.
(Refer toHA-50.)
Repair/replace asneces-
sary .
Adjust orreplace water
cock.
Adjust temperature control
cable.
Replace airmix door.
Hot inlet
Warm outlet
Check thermostat installa-
tion.

OK
Both
hoses
warm
Check heater hosesforproper
installation.

OK

•

Back
flush heater core,drain andrefill cool-
ant. Retest.
Replace
thermostat. Refer
to LC section
("Thermostat", "ENGINE
COOLING SYSTEM"). Hot
inlet
Warm outlet
System OK

HA-23
Both
hoses
warm
Replace heater
core.

TROUBLEDIAGNOSES
Wiring Diagram -HEATER -(Conl'd)

r-------------------,

1~ ~~)1

: (b)
@ :

L ~

•

Refer
tolast page
(Fo'ldout page).

HA-HEATER-02

(b):
LHDmodels

@:
RHOmodels
@: ForEurope andIsrae 1

@:
Except@

*1
(6)
GIS

ViS

*2
<0
G/Y,
@
Y/R

,

RECIRCULATION
SWITCH

~

Refer
toEL-POWER.

LG/R
ffi

INDICATOR

INTAKE
DOOR
MOTOR

~

L

FUSE
BLOCK
(JIB)

~

IN21
•

LG/R

7.5A

III

~B

I

~O

IGNITION
SWITCH

ON

EE

~~
~W

Preceding
~B
page ~

HHA013
HA-37