NISSAN ALMERA N16 2001 Electronic Repair Manual

CHECKING REFRIGERANT LEAKS=NJHA0168Preliminary CheckNJHA0168S01Perform a visual inspection of all refrigeration parts, fittings, hoses,
and components for signs of A/C lubricant leakage, damage and
corrosion. Take note of the areas with A/C lubricant leakage to
allow extra time in these areas with electronic leak detector.
SHA705EB
Precautions for Handling Leak DetectorNJHA0168S02When performing a refrigerant leak check, use an A/C leak detec-
tor or equivalent. Ensure that the instrument is calibrated and set
properly per the operating instructions.
The leak detector is a delicate device. In order to use the leak
detector properly, read the operating instructions and perform any
specified maintenance.
Other gases in the work area or substances on the A/C
components, for example, anti-freeze, windshield washer
fluid, solvents and lubricants, may falsely trigger the leak
detector. Make sure the surfaces to be checked are clean.
Clean with a dry cloth or blow off with shop air. Do not allow
the sensor tip of the detector to contact with any substance.
This can also cause false readings and may damage the detec-
tor.
SHA707EA
1. Position probe approximately 5 mm (3/16 in) away from point
to be checked.
SHA706E
2. When testing, circle each fitting completely with probe.
SERVICE PROCEDURE
Refrigerant Lines (Cont'd)
HA-99

SHA708EA
3. Move probe along component approximately 25 to 50 mm (1
to 2 in)/sec.
Checking ProcedureNJHA0168S03To prevent inaccurate or false readings, make sure there is no
refrigerant vapor, shop chemicals, or cigarette smoke in the
vicinity of the vehicle. Perform the leak test in calm area (low
air/wind movement) so that the leaking refrigerant is not dis-
persed.
1. Turn engine off.
2. Connect a suitable A/C manifold gauge set to the A/C service
ports.
3. Check if the A/C refrigerant pressure is at least 345.2 kPa (3.45
bar, 3.52 kg/cm
2, 50.1 psi) above 16ÉC (61ÉF). If less than
specification, recover/evacuate and recharge the system with
the specified amount of refrigerant.
NOTE:
At temperatures below 16ÉC (61ÉF), leaks may not be detected
since the system may not reach 345.2 kPa (3.45 bar, 3.52 kg/cm
2,
50.1 psi).
4. Conduct the leak test from the high side (compressor dis-
chargeato evaporator inletg) to the low side (evaporator drain
hosehto shaft sealk). Refer to HA-97. Perform a leak check
for the following areas carefully. Clean the component to be
checked and move the leak detector probe completely around
the connection/component.
+Compressor
Check the fitting of high and low pressure hoses, relief valve
and shaft seal.
+Liquid tank
Check the pressure switch, refrigerant pressure sensor, tube
fitting, weld seams and the fusible plug mount.
+Service valves
Check all around the service valves. Ensure service valve caps
are secured on the service valves (to prevent leaks).
NOTE:
After removing A/C manifold gauge set from service valves, wipe
any residue from valves to prevent any false readings by leak
detector.
+Cooling unit (Evaporator)
With engine OFF, turn blower fan on ªHighº for at least 15
seconds to dissipate any refrigerant trace in the cooling unit.
Wait a minimum of 10 minutes accumulation time (refer to the
manufacturer's recommended procedure for actual wait time)
before inserting the leak detector probe into the drain hose.
Keep the probe inserted for at least ten seconds. Use caution
not to contaminate the ptobe tip with water or dirt that may be
in the drain hose.
SERVICE PROCEDURE
Refrigerant Lines (Cont'd)
HA-100

5. If a leak detector detects a leak, verify at least once by blow-
ing compressed air into area of suspected leak, then repeat
check as outlined above.
6. Do not stop when one leak is found. Continue to check for
additional leaks at all system components.
If no leaks are found, perform steps7-10.
7. Start engine.
8. Set the heater A/C control as follows:
1) A/C switch ON.
2) Face mode
3) Recirculation position
4) Max cold temperature
5) Fan speed high
9. Run engine at 1,500 rpm for at least 2 minutes.
10. Turn engine off and perform leak check again following steps
4 through 6 above.
SHA839E
Refrigerant leaks should be checked immediately after
stopping the engine. Begin with the leak detector at the
compressor. The pressure on the high pressure side will
gradually drop after refrigerant circulation stops and pres-
sure on the low pressure side will gradually rise, as shown
in the graph. Some leaks are more easily detected when
pressure is high.
11. Discharge A/C system using approved refrigerant recovery
equipment. Repair the leaking fitting or component as neces-
sary.
12. Evacuate and recharge A/C system and perform the leak test
to confirm no refrigerant leaks.
13. Conduct A/C performance test to ensure system works
properly.
Belt
TENSION ADJUSTMENTNJHA0169+Refer to EM-15 (QG), EM-84 (YD), ªChecking Drive Beltº.
SERVICE PROCEDURE
Refrigerant Lines (Cont'd)
HA-101

Idle Air Control Valve (IACV) Ð Auxiliary Air
Control (AAC) Valve
INSPECTIONNJHA0199+Refer to EC-313 (QG), ªSystem Descriptionº.
RHA680H
Ventilation Air Filter
FUNCTIONNJHA0171Air inside passenger compartment is kept clean at either recircula-
tion or fresh mode by installing ventilation air filter into cooling unit.
SHA868E
REPLACEMENT TIMINGNJHA0172Replace ventilation air filter.
Refer to MA-8, ªPERIODIC MAINTENANCEº.
Caution label is fixed inside the glove box.
RHA681H
REPLACEMENT PROCEDURENJHA0173+Remove glove box.
+Remove filter cover.
+Take out the ventilation air filter from blower unit.
+Replace with new one and reinstall on blower unit.
+Reinstall glove box.
SERVICE PROCEDURE
Idle Air Control Valve (IACV) Ð Auxiliary Air Control (AAC) Valve
HA-102

CompressorNJHA0174
ModelCALSONIC make CSV613
TypeSwash plate (Variable displacement)
Displacement cm
3(cu in)/rev.6.0 - 125 (0.37 - 7.63)
Direction of rotationClockwise (viewed from drive end)
Drive beltQG engine model: Poly V
YD engine model: Type A
LubricantNJHA0175
ModelCALSONIC make CSV613
NameNissan A/C System Oil Type S
Part numberKLH00-PAGS0
Capacity
m!(Imp fl oz)Total in system 180 (6.3) - 200 (7.0)
Compressor (Service part) charging amount 180 (6.3) - 200 (7.0)
RefrigerantNJHA0176
TypeHFC-134a (R-134a)
Capacity kg (lb)0.45 - 0.55 (0.99 - 1.21)
Engine Idling Speed (When A/C is On)NJHA0177+Refer to EC-489 (QG), EC-702 (YD), ªIdle Speed and Ignition Timingº.
Belt TensionNJHA0178+Refer to EM-15 (QG), EM-84 (YD), ªChecking Drive Beltsº.
SERVICE DATA AND SPECIFICATIONS (SDS)
Compressor
HA-103

SERVICE DATA AND SPECIFICATIONS (SDS)
Belt Tension (Cont'd)
HA-104

STARTING & CHARGING SYSTEMS
SECTION
SC
CONTENTS
PRECAUTIONS...............................................................2
Supplemental Restraint System (SRS)²AIR
BAG²and²SEAT BELT PRE-TENSIONER²...............2
Wiring Diagrams and Trouble Diagnoses....................2
BATTERY.........................................................................3
How to Handle Battery ................................................3
METHODS OF PREVENTING OVER-DISCHARGE......3
CHECKING ELECTROLYTE LEVEL............................3
SPECIFIC GRAVITY CHECK......................................4
Battery Test and Charging Chart .................................6
CHART I...................................................................6
CHART II..................................................................7
A: SLOW CHARGE....................................................8
B: STANDARD CHARGE..........................................10
C: QUICK CHARGE................................................. 11
STARTING SYSTEM.....................................................13
System Description ....................................................13
M/T MODELS..........................................................13
A/T MODELS...........................................................13
Wiring Diagram - START -.........................................14
Trouble Diagnoses.....................................................15
Construction ...............................................................16
Removal and Installation ...........................................19
REMOVAL...............................................................19
INSTALLATION........................................................19
Inspection...................................................................19
MAGNETIC SWITCH CHECK...................................19
PINION/CLUTCH CHECK.........................................19
BRUSH CHECK.......................................................20
YOKE CHECK.........................................................21
ARMATURE CHECK................................................21
Assembly ...................................................................22
PINION PROTRUSION LENGTH ADJUSTMENT........22
CHARGING SYSTEM....................................................24
System Description ....................................................24
Wiring Diagram - CHARGE -.....................................25
Trouble Diagnoses.....................................................26
WITH IC REGULATOR.............................................26
MALFUNCTION INDICATOR....................................26
Construction ...............................................................27
Removal and Installation ...........................................30
REMOVAL (QG ENGINE).........................................30
REMOVAL (YD ENGINE)..........................................30
INSTALLATION........................................................31
Disassembly...............................................................31
REAR COVER.........................................................31
REAR BEARING......................................................31
Inspection...................................................................31
ROTOR CHECK......................................................31
BRUSH CHECK.......................................................32
STATOR CHECK.....................................................32
Assembly ...................................................................32
RING FITTING IN REAR BEARING...........................32
REAR COVER INSTALLATION.................................33
SERVICE DATA AND SPECIFICATIONS (SDS).........34
Battery........................................................................34
Starter ........................................................................34
Alternator ...................................................................35

Supplemental Restraint System (SRS) ªAIR
BAGº and ªSEAT BELT PRE-TENSIONERº
NJSC0001The Supplemental Restraint System such as ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS system composition which is available to NISSAN MODEL N16 is as follows (The compo-
sition varies according to the destination and optional equipment.):
+For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), front seat
belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.
+For a side collision
The Supplemental Restraint System consists of front side air bag module (located in the outer side of front
seat), side air bag (satellite) sensor, diagnosis sensor unit (one of components of air bags for a frontal
collision), wiring harness, warning lamp (one of components of air bags for a frontal collision).
Information necessary to service the system safely is included in theRS sectionof this Service Manual.
WARNING:
+To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance should be per-
formed by an authorized NISSAN dealer.
+Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the RS section.
+Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow harness connector.
Wiring Diagrams and Trouble DiagnosesNJSC0002When you read wiring diagrams, refer to the following:
+GI-12, ªHOW TO READ WIRING DIAGRAMSº
+EL-10, ªPOWER SUPPLY ROUTINGº for power distribution circuit
When you perform trouble diagnoses, refer to the following:
+GI-32, ªHOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSESº
+GI-21, ªHOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENTº
PRECAUTIONS
Supplemental Restraint System (SRS) ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº
SC-2

How to Handle BatteryNJSC0003CAUTION:
If it becomes necessary to start the engine with a booster
battery and jumper cables,
1) Use a 12-volt booster battery.
2) After connecting battery cables, ensure that they are
tightly clamped to battery terminals for good contact.
3) Never add distilled water through the hole used to check
specific gravity.
MEL040F
METHODS OF PREVENTING OVER-DISCHARGENJSC0003S01The following precautions must be taken to prevent over-discharg-
ing a battery.
+The battery surface (particularly its top) should always be kept
clean and dry.
+The terminal connections should be clean and tight.
+At every routine maintenance, check the electrolyte level.
This also applies to batteries designated as ªlow maintenanceº
and ªmaintenance-freeº.
MEL041F
+When the vehicle is not going to be used over a long period of
time, disconnect the negative battery terminal.
MEL042F
+Check the charge condition of the battery.
Periodically check the specific gravity of the electrolyte. Keep
a close check on charge condition to prevent over-discharge.
CHECKING ELECTROLYTE LEVELNJSC0003S02WARNING:
Do not allow battery fluid to come in contact with skin, eyes,
fabrics, or painted surfaces. After touching a battery, do not
touch or rub your eyes until you have thoroughly washed your
hands. If acid contacts eyes, skin or clothing, immediately
flush with water for 15 minutes and seek medical attention.
BATTERY
How to Handle Battery
SC-3

MEL043F
+Remove the cell plug using a suitable tool.
+Add distilled water up to the MAX level.
SEL709E
SulphationNJSC0003S0201A battery will be completely discharged if it is left unattended
for a long time and the specific gravity will become less than
1.100. This may result in sulphation on the cell plates.
To determine if a battery has been ªsulphatedº, note its volt-
age and current when charging it. As shown in the figure, less
current and higher voltage are observed in the initial stage of
charging sulphated batteries.
A sulphated battery may sometimes be brought back into ser-
vice by means of a long, slow charge, 12 hours or more, fol-
lowed by a battery capacity test.
MEL042FA
SPECIFIC GRAVITY CHECKNJSC0003S031. Read hydrometer and thermometer indications at eye level.
2. Convert into specific gravity at 20ÉC (68ÉF).
Example:
+When electrolyte temperature is 35ÉC (95ÉF) and specific grav-
ity of electrolyte is 1.230, converted specific gravity at 20ÉC
(68ÉF) is 1.240.
+When electrolyte temperature is 0ÉC (32ÉF) and specific grav-
ity of electrolyte is 1.210, converted specific gravity at 20ÉC
(68ÉF) is 1.196.
BATTERY
How to Handle Battery (Cont'd)
SC-4