2001 NISSAN ALMERA N16 service

Crankshaft Position Sensor (POS)NJEC0558Refer to ªComponent Inspectionº, EC-277.
Camshaft Position Sensor (PHASE)NJEC0559Refer to ªComponent Inspectionº, EC-284.
SERVICE DATA AND SPECIFICATIONS (SDS)QG
Crankshaft Position Sensor (POS)
EC-491

Supplemental Restraint System (SRS) ªAIR
BAGº and ªSEAT BELT PRE-TENSIONERº
NJEC0601The 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 harness can be identified by yellow harness connector.
PRECAUTIONSYD
Supplemental Restraint System (SRS) ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº
EC-494

Special Service ToolsNJEC0605
Tool number
Tool nameDescription
KV111060S0
Removal/Installation tool
kit for fuel injection pump
NT814
KV109E0010
Break-out box
NT825
KV109E0050
Y-cable adapter
NT826
PREPARATIONYD
Special Service Tools
EC-498

Injection Tube and Injection Nozzle
REMOVAL AND INSTALLATIONNJEC0618CAUTION:
+Do not disassemble injection nozzle assembly. If NG,
replace injection nozzle assembly.
+Plug flare nut with a cap or rag so that no dust enters the
nozzle. Cover nozzle tip for protection of needle.
JEF443Z
JEF340Y
Injection TubeNJEC0618S01RemovalNJEC0618S01011. Mark the cylinder Nos. to the injection tubes, then disconnect
them.
+Marking should be made at proper locations and by the
proper method, so that they are not erased by fuel, etc.
2. Remove the clamps, then disconnect the tubes one by one.
+The intake manifold is removed for explanation in the figure.
BASIC SERVICE PROCEDUREYD
Injection Tube and Injection Nozzle
EC-509

JEF341Y
InstallationNJEC0618S01021. Referring to the figure and the marking which were made for
installation, connect the injection tubes to all the cylinders.
2. Connect temporarily the tubes to the cylinder head side only
by screwing 2 to 3 turns. Make sure that all tubes can be con-
nected to the pump side also.
3. Then, tighten the flare nuts of the cylinder head side and pump
side, starting from the opposite side from you.
JEF444Z
4. Attach the injection tube clamp in the direction shown in the
figure.
5. Insert tightening bolts of the clamp (4-tube type) from the rear
to the front of the engine.
JEF343Y
Injection Nozzle Oil SealNJEC0618S02RemovalNJEC0618S0201Using a tool such as a flat-bladed screwdriver, pry the flange of the
seal, then remove it.
Installation
NJEC0618S02021. After the high-pressure injection nozzle assembly is installed,
push the seal from the cylinder head side until it contacts the
flange.
2. Make sure that the garter spring of the seal on the high-pres-
sure injection nozzle assembly side is not falling.
+Replace the oil seal with new one when the high-pressure
injection nozzle assembly is removed. (It is not necessary
to replace the oil seal when only injection tubes are
removed.)
BASIC SERVICE PROCEDUREYD
Injection Tube and Injection Nozzle (Cont'd)
EC-510

JEF344Y
Spill TubeNJEC0618S03RemovalNJEC0618S0301Loosen and remove the mounting bolts and flare nuts in the
reverse order of the numbers in the figure.
+When the flare nuts are loosened, hold the head of hexagonal
retaining bolts (head inside) using a wrench.
Installation
NJEC0618S03021. Tighten the flare nuts and mounting bolts in the numerical
order shown in the figure.
+When the flare nuts are tightened, hold the head of the hex-
agonal retaining bolts (head inside) using a wrench.
2. To prevent interference with the rocker cover, place the spill
gasket joint within the range shown by the arrow, then tighten
the mounting bolts. (Be especially careful about No. 2 and 4
cylinders.)
+After the spill tube is installed, check the airtightness of
the spill tube.
+After the bolts are tightened, the joint of the spill tube gasket
might be broken. However, this will not affect function.
JEF345Y
High Pressure Injection Nozzle AssemblyNJEC0618S04RemovalNJEC0618S04011. Remove the nozzle support, then pull out the high-pressure
injection nozzle assembly by turning it clockwise/
counterclockwise.
2. Using a tool such as a flat-head screwdriver, remove the cop-
per washer inside the cylinder head.
CAUTION:
Do not disassemble the high-pressure injection nozzle.
Installation
NJEC0618S04021. Insert the nozzle gasket to the cylinder head hole.
2. Attach the O-ring to the mounting groove of the nozzle side,
then insert it in the cylinder head.
TEST AND ADJUSTMENTNJEC0619WARNING:
When using nozzle tester, be careful not to allow diesel fuel
sprayed from nozzle to contact your hands or body, and make
sure your eyes are properly protected with goggles.
BASIC SERVICE PROCEDUREYD
Injection Tube and Injection Nozzle (Cont'd)
EC-511

JEF346Y
Inspection for Spill Tube AirtightnessNJEC0619S01Before the rocker cover is installed, perform the inspection as fol-
lows.
1. Connect the handy vacuum pump to the spill hose.
2. Check that the airtightness is maintained after the negative
pressure shown below is applied.
Standard:
±53.3 to ±66.7 kPa (±533 to ±667 mbar, ±400 to ±500
mmHg, ±15.75 to ±19.69 inHg)
JEF347Y
Air Bleeding of Fuel PipingNJEC0619S02After the repair, bleed air in the piping by pumping the priming
pump up and down until it becomes heavy.
JEF348Y
Injection Pressure TestNJEC0619S031. Install injection nozzle assembly to injection nozzle tester and
bleed air from flare nut.
2. Pump the tester handle slowly (one time per second) and
watch the pressure gauge.
3. Read the pressure gauge when the injection pressure just
starts dropping.
Initial injection pressure:
New
21,476 - 22,457 kPa (214.7 - 224.5 bar, 219 - 229
kg/cm
2, 3,114 - 3,256 psi)
Limit
18,275 kPa (182.7 bar, 186 kg/cm
2, 2,650 psi)
+The injection nozzle assembly has a 2-stage pressure injection
function. However, the judgement should be made at the first
stage of the valve opening pressure.
Always check initial injection pressure using a new nozzle.
BASIC SERVICE PROCEDUREYD
Injection Tube and Injection Nozzle (Cont'd)
EC-512

SEF434Z
Spray Pattern TestNJEC0619S051. Check spray pattern by pumping tester handle one full stroke
per second.
NG spray pattern:
Does not inject straight and strong (B in the figure).
Fuel drips (C in the figure).
Does not inject evenly (D in the figure).
2. If the spray pattern is not correct, replace injection nozzle
assembly.
Electronic Control Fuel Injection Pump
REMOVAL AND INSTALLATIONNJEC0620
JEF350Y
RemovalNJEC0620S011. Remove the parts shown below.
+Engine hood
+Engine coolant (drain)
+Engine cover
+Heater pipe under intake manifold
+Injection tubes
+Right splash cover (with undercover)
+Right front wheel
BASIC SERVICE PROCEDUREYD
Injection Tube and Injection Nozzle (Cont'd)
EC-513