2006 NISSAN VERSA fuel

FUEL PUMP
EC-573
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Revision: June 20062007 Versa
3. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E46.
3. Turn ignition switch ON.
4. Check voltage between IPDM E/R terminal 47 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 11.
4. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E8, F8

Harness for open or short between IPDM E/R and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect “fuel level sensor unit and fuel pump” harness con-
nector (1).
–Illustration shows the view with inspection hole cover removed.
4. Turn ignition switch ON.
5. Check voltage between “fuel level sensor unit and fuel pump”
terminal 1 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 9.
NG >> GO TO 6.Voltage: Battery voltage
PBIB3319E
BBIA0702E
Voltage: Battery voltage should exist for 1 second
after ignition switch is turned ON.
PBIB0795E

EC-574Revision: June 2006
FUEL PUMP
2007 Versa
6. CHECK 15A FUSE
1. Turn ignition switch OFF.
2. Disconnect 15A fuse.
3. Check 15A fuse.
OK or NG
OK >> GO TO 7.
NG >> Replace fuse.
7. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-IV
1. Disconnect IPDM E/R harness connector E45.
2. Check harness continuity between IPDM E/R terminal 36 and “fuel level sensor unit and fuel pump” termi-
nal 1. Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 13.
NG >> GO TO 8.
8. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors M69, E7

Harness connectors M12, B101

Harness for open or short between IPDM E/R and “fuel level sensor unit and fuel pump”
>> Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK FUEL PUMP GROUND CIRCUIT
1. Check harness continuity between “fuel level sensor unit and fuel pump” terminal 3 and ground.
Refer to Wiring Diagram.
2. Also check harness for short to power.
OK or NG
OK >> GO TO 10.
NG >> Repair or replace harness or connectors.
10. CHECK FUEL PUMP
Refer to EC-575, "
Component Inspection" .
OK or NG
OK >> GO TO 11.
NG >> Replace fuel pump.
11 . CHECK INTERMITTENT INCIDENT
Refer to EC-143, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R. Refer to PG-29, "Removal and Installation of IPDM E/R" .
NG >> Repair or replace harness or connectors.Continuity should exist.
Continuity should exist.

FUEL PUMP
EC-575
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Component InspectionUBS00PTY
FUEL PUMP
1. Disconnect “fuel level sensor unit and fuel pump” harness connector.
2. Check resistance between “fuel level sensor unit and fuel pump”
terminals 1 and 3.
3. If NG, replace “fuel level sensor unit and fuel pump”.
Removal and InstallationUBS00PTZ
FUEL PUMP
Refer to FL-5, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" . Resistance: Approximately 0.2 - 5.0Ω [at 25°C (77°F)]
SEC9 18 C

IGNITION SIGNAL
EC-585
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7. Remove fuel pump fuse (1) in IPDM E/R (2) to release fuel pres-
sure.
NOTE:
Do not use CONSULT-II to release fuel pressure, or fuel pres-
sure applies again during the following procedure.
– : Vehicle front
8. Start engine.
9. After engine stalls, crank it two or three times to release all fuel
pressure.
10. Turn ignition switch OFF.
11. Remove all ignition coil harness connectors to avoid the electri-
cal discharge from the ignition coils.
12. Remove ignition coil and spark plug of the cylinder to be checked.
13. Crank engine for 5 seconds or more to remove combustion gas in the cylinder.
14. Connect spark plug and harness connector to ignition coil.
15. Fix ignition coil using a rope etc. with gap of 13 - 17 mm
between the edge of the spark plug and grounded metal portion
as shown in the figure.
16. Crank engine for about 3 seconds, and check whether spark is
generated between the spark plug and the grounded metal por-
tion.
CAUTION:

Do not approach to the spark plug and the ignition coil
within 50cm. Be careful not to get an electrical shock
while checking, because the electrical discharge voltage
becomes 20kV or more.

It might cause to damage the ignition coil if the gap of more than 17 mm is taken.
NOTE:
When the gap is less than 13 mm, the spark might be generated even if the coil is malfunctioning.
17. If NG, replace ignition coil with power transistor.
CONDENSER-2
1. Turn ignition switch OFF.
2. Disconnect condenser-2 harness connector.
3. Check resistance between condenser-2 terminals 1 and 2.
4. If NG, replace condenser-2.
Removal and InstallationUBS00PU4
IGNITION COIL WITH POWER TRANSISTOR
Refer to EM-30, "IGNITION COIL, SPARK PLUG AND ROCKER COVER" . Spark should be generated.
PBIB2958E
PBIB2325E
Resistance: Above 1 MΩ [at 25°C (77°F)]
PBIB0794E

EC-594Revision: June 2006
SERVICE DATA AND SPECIFICATIONS (SDS)
2007 Versa
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Fuel PressureUBS00PUA
Idle Speed and Ignition TimingUBS00PUB
*: Under the following conditions:

Air conditioner switch: OFF

Electric load: OFF (Lights, heater fan & rear window defogger)

Steering wheel: Kept in straight-ahead position
Calculated Load ValueUBS00PUC
Mass Air Flow SensorUBS00PUD
*: Engine is warmed up to normal operating temperature and running under no load.
Intake Air Temperature SensorUBS00PUE
Engine Coolant Temperature SensorUBS00PUF
Air Fuel Ratio (A/F) Sensor 1 HeaterUBS00PUG
Heated Oxygen sensor 2 HeaterUBS00PUH
Crankshaft Position Sensor (POS)UBS00PUI
Refer to EC-326, "Component Inspection" .
Fuel pressure at idle
Approximately 350 kPa (3.57 kg/cm2 , 51 psi)
Target idle speedA/T No load* (in P or N position)
700 ± 50 rpm CVT No load* (In P or N position)
M/T No load* (in Neutral position)
Air conditioner: ONA/T In P or N position
700 rpm or more CVT In P or N position
M/T In Neutral position
Ignition timingA/T In P or N position
13 ± 5° BTDC CVT In P or N position
M/T In Neutral position
Calculated load value% (Using CONSULT-II or GST)
At idle10 - 35
At 2,500 rpm10 - 35
Supply voltageBattery voltage (11 - 14V)
Output voltage at idle1.0 - 1.3*V
Mass air flow (Using CONSULT-II or GST)1.0 - 4.0 g·m/sec at idle*
2.0 - 10.0 g·m/sec at 2,500 rpm*
Temperature °C (°F) Resistance kΩ
25 (77)1.800 - 2.200
Temperature °C (°F) Resistance kΩ
20 (68)2.1 - 2.9
50 (122)0.68 - 1.00
90 (194)0.236 - 0.260
Resistance [at 25°C (77°F)] 1.8 - 2.44Ω
Resistance [at 25°C (77°F)] 3.4 - 4.4Ω

SERVICE DATA AND SPECIFICATIONS (SDS)
EC-595
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Revision: June 20062007 Versa
Camshaft Position Sensor (PHASE)UBS00PUJ
Refer to EC-333, "Component Inspection" .
Throttle Control MotorUBS00PUK
Fuel InjectorUBS00PUL
Fuel PumpUBS00PUM
Resistance [at 25°C (77°F)] Approximately 1 - 15Ω
Resistance [at 10 - 60°C (50 - 140°F)] 11.4 - 14.5Ω
Resistance [at 25°C (77°F)] Approximately 0.2 - 5.0Ω

EM-1
ENGINE MECHANICAL
B ENGINE
CONTENTS
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SECTION EM
A
EM
Revision: June 20062007 Versa PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for Procedures without Cowl Top Cover ..... 3
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect .......................................... 3
OPERATION PROCEDURE ................................. 3
Precautions for Drain Coolant .................................. 4
Precautions for Disconnecting Fuel Piping .............. 4
Precautions for Removal and Disassembly ............. 4
Precautions for Inspection, Repair and Replace-
ment ......................................................................... 4
Precautions for Assembly and Installation ............... 4
Parts Requiring Angular Tightening ......................... 4
Precautions for Liquid Gasket .................................. 5
REMOVAL OF LIQUID GASKET SEALING .......... 5
LIQUID GASKET APPLICATION PROCEDURE ..... 5
PREPARATION ........................................................... 7
Special Service Tools ............................................... 7
Commercial Service Tools ........................................ 9
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ...............................................11
NVH Troubleshooting — Engine Noise ...................11
Use the Chart Below to Help You Find the Cause
of the Symptom. ..................................................... 12
DRIVE BELTS ........................................................... 13
Components ........................................................... 13
Checking Drive Belts .............................................. 13
Tension Adjustment ................................................ 13
Removal and Installation ........................................ 13
REMOVAL ........................................................... 13
INSTALLATION ................................................... 14
Components ........................................................... 14
Removal and Installation of Drive Belt Auto-Ten-
sioner ..................................................................... 14
REMOVAL ........................................................... 14
INSTALLATION ................................................... 15
AIR CLEANER AND AIR DUCT ............................... 16Components ........................................................... 16
Removal and Installation ........................................ 16
REMOVAL ........................................................... 16
INSTALLATION ................................................... 16
Changing Air Cleaner Filter .................................... 17
REMOVAL ........................................................... 17
INSPECTION AFTER REMOVAL ....................... 17
INSTALLATION ................................................... 17
INTAKE MANIFOLD ................................................. 18
Components ........................................................... 18
Removal and Installation ........................................ 18
REMOVAL ........................................................... 18
INSTALLATION ................................................... 19
INSPECTION AFTER INSTALLATION ................ 20
EXHAUST MANIFOLD ............................................. 21
Components ........................................................... 21
Removal and Installation ........................................ 21
REMOVAL ........................................................... 21
INSPECTION AFTER REMOVAL ....................... 22
INSTALLATION ................................................... 22
OIL PAN .................................................................... 24
Components ........................................................... 24
Removal and Installation ........................................ 24
REMOVAL ........................................................... 24
INSPECTION AFTER REMOVAL ....................... 26
INSTALLATION ................................................... 26
IGNITION COIL, SPARK PLUG AND ROCKER
COVER ...................................................................... 30
Components ........................................................... 30
Removal and Installation ........................................ 30
REMOVAL ........................................................... 30
INSPECTION AFTER REMOVAL ....................... 31
INSTALLATION ................................................... 31
FUEL INJECTOR AND FUEL TUBE ........................ 33
Components ........................................................... 33
Removal and Installation ........................................ 33
REMOVAL ........................................................... 33
INSTALLATION ................................................... 35
TIMING CHAIN .......................................................... 37

EM-4Revision: June 2006
PRECAUTIONS
2007 Versa
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-II.
Precautions for Drain CoolantEBS00U6S

Drain coolant when engine is cooled.
Precautions for Disconnecting Fuel PipingEBS00U6T

Before starting work, make sure no fire or spark producing items are in the work area.

Release fuel pressure before disassembly.

After disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and DisassemblyEBS00U6U

When instructed to use special service tools, use the specified tools. Always be careful to work safely,
avoid forceful or uninstructed operations.

Exercise maximum care to avoid damage to mating or sliding surfaces.

Cover openings of engine system with tape or the equivalent, if necessary, to seal out foreign materials.

Mark and arrange disassembly parts in an organized way for easy troubleshooting and assembly.

When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally
opposite, and so on. If the order of loosening is specified, do exactly as specified. Power tools may be
used where noted in the step.
Precautions for Inspection, Repair and ReplacementEBS00U6V

Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way,
and replace if necessary.
Precautions for Assembly and InstallationEBS00U6W

Use torque wrench to tighten bolts or nuts to specification.

When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the
ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is speci-
fied, do exactly as specified.

Replace with new gasket, packing, oil seal or O-ring.

Thoroughly wash, clean, and air-blow each part. Carefully check oil or coolant passages for any restriction
and blockage.

Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust.
Before assembly, oil sliding surfaces well.

Release air within route after draining coolant.

Before starting engine, apply fuel pressure to fuel lines with turning ignition switch ON (with engine
stopped). Then make sure that there are no leaks at fuel line connections.

After repairing, start engine and increase engine speed to check coolant, fuel, oil, and exhaust systems
for leakage.
Parts Requiring Angular TighteningEBS00U6X

Use an angle wrench for the final tightening of the following engine parts:
–Cylinder head bolts
–Camshaft sprocket (INT)
–Main bearing cap bolts
–Connecting rod cap nuts
–Crankshaft pulley bolt (No angle wrench is required as the bolt flange is provided with notches for angular
tightening)
Tool number : KV10112100 (BT-8653-A)