2007 NISSAN LATIO wheel

EC-474Revision: June 2006
DTC P1572 ASCD BRAKE SWITCH
2007 Versa
DTC Confirmation ProcedureUBS00QLP
CAUTION:
Always drive vehicle at a safe speed.
NOTE:

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait
at least 10 seconds before conducting the next test.

Procedure for malfunction B is not described here. It takes extremely long time to complete procedure for
malfunction B. By performing procedure for malfunction A, the incident that causes malfunction B can be
detected.
TESTING CONDITION:
Steps 4 and 5 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a
road test is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-II
1. Start engine.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Press MAIN switch and make sure that CRUISE indicator lights
up.
4. Drive the vehicle for at least 5 consecutive seconds under the
following condition.
If 1st trip DTC is detected, go to EC-476, "
Diagnostic Procedure"
.
If 1st trip DTC is not detected, go to the following step.
5. Drive the vehicle for at least 5 consecutive seconds under the
following condition.
6. If 1st trip DTC is detected, go to EC-476, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
VHCL SPEED SE More than 30 km/h (19 MPH)
Shift lever Suitable position
VHCL SPEED SE More than 30 km/h (19 MPH)
Shift lever Suitable position
Driving locationDepress the brake pedal for more than
5 seconds so as not to come off from
the above-mentioned vehicle speed.
PBIB2386E

DTC P1574 ASCD VEHICLE SPEED SENSOR
EC-483
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Revision: June 20062007 Versa
DTC P1574 ASCD VEHICLE SPEED SENSORPFP:31036
Component DescriptionUBS00QLT
The ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from combina-
tion meter, and the other is from TCM (Transmission control module). The ECM uses these signals for ASCD
control. Refer to EC-28, "
AUTOMATIC SPEED CONTROL DEVICE (ASCD)" for ASCD functions.
On Board Diagnosis LogicUBS00QLU
This self-diagnosis has the one trip detection logic.
The MIL will not light up for this diagnosis.
NOTE:

If DTC P1574 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-151, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .

If DTC P1574 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to EC-154, "
DTC U1010 CAN COMMUNICATION" .

If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500.
Refer to EC-421, "
DTC P0500 VSS"

If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to EC-427, "
DTC P0605 ECM"
DTC Confirmation ProcedureUBS00QLV
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Step 3 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test
is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-II
1. Start engine.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Drive the vehicle at more than 40 km/h (25MPH).
4. If DTC is detected, go to EC-484, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No.Trouble Diagnosis
NameDTC Detecting Condition Possible Cause
P1574
1574ASCD vehicle speed
sensorECM detects a difference between two vehicle
speed signals is out of the specified range.

Harness or connectors
(CAN communication line is open or shorted.)

Harness or connectors
(Combination meter circuit is open or
shorted.)

TCM (A/T and CVT models)

Combination meter

Wheel sensor

ECM
SEF 0 58 Y

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

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-2Revision: June 20062007 Versa Components ........................................................... 37
Removal and Installation ........................................ 38
REMOVAL ........................................................... 38
INSPECTION AFTER REMOVAL ........................ 41
INSTALLATION .................................................... 42
CAMSHAFT ............................................................... 47
Components ........................................................... 47
Removal and Installation ........................................ 47
REMOVAL ........................................................... 47
INSPECTION AFTER REMOVAL ........................ 49
INSTALLATION .................................................... 51
INSPECTION AFTER INSTALLATION ................ 54
Valve Clearance ...................................................... 55
INSPECTION ....................................................... 55
ADJUSTMENT .................................................... 57
OIL SEAL .................................................................. 59
Removal and Installation of Valve Oil Seal ............. 59
REMOVAL ........................................................... 59
INSTALLATION .................................................... 59
Removal and Installation of Front Oil Seal ............. 60
REMOVAL ........................................................... 60
INSTALLATION .................................................... 60
Removal and Installation of Rear Oil Seal .............. 61
REMOVAL ........................................................... 61
INSTALLATION .................................................... 61
CYLINDER HEAD ..................................................... 62
On-Vehicle Service ................................................. 62
CHECKING COMPRESSION PRESSURE ......... 62
Components ........................................................... 63
Removal and Installation ........................................ 63
REMOVAL ........................................................... 63
INSPECTION AFTER REMOVAL ........................ 64
INSTALLATION .................................................... 65
Components ........................................................... 66
Disassembly and Assembly .................................... 66
DISASSEMBLY ................................................... 66
ASSEMBLY ......................................................... 67
Inspection After Disassembly ................................. 68
VALVE DIMENSIONS .......................................... 68
VALVE GUIDE CLEARANCE .............................. 68
VALVE GUIDE REPLACEMENT ......................... 69
VALVE SEAT CONTACT ..................................... 70
VALVE SEAT REPLACEMENT ........................... 70
VALVE SPRING SQUARENESS ......................... 71
VALVE SPRING DIMENSIONS AND VALVE
SPRING PRESSURE LOAD ............................... 72
ENGINE ASSEMBLY ................................................ 73
Components ........................................................... 73
Removal and Installation ........................................ 73
REMOVAL ........................................................... 74
INSTALLATION .................................................... 76
INSPECTION AFTER INSTALLATION ................ 76
CYLINDER BLOCK ................................................... 77
Components ........................................................... 77
Disassembly and Assembly .................................... 78
DISASSEMBLY ................................................... 78ASSEMBLY ..........................................................81
How to Select Piston and Bearing ..........................87
DESCRIPTION ....................................................87
HOW TO SELECT PISTON .................................87
HOW TO SELECT CONNECTING ROD BEAR-
ING .......................................................................88
HOW TO SELECT MAIN BEARING ....................91
Inspection After Disassembly ..................................95
CRANKSHAFT END PLAY ..................................95
CONNECTING ROD SIDE CLEARANCE ...........95
PISTON TO PISTON PIN OIL CLEARANCE .......95
PISTON RING SIDE CLEARANCE .....................96
PISTON RING END GAP ....................................96
CONNECTING ROD BEND AND TORSION .......97
CONNECTING ROD BIG END DIAMETER ........97
CONNECTING ROD BUSHING OIL CLEAR-
ANCE ...................................................................97
CYLINDER BLOCK TOP SURFACE DISTOR-
TION ....................................................................98
MAIN BEARING HOUSING INNER DIAMETER ...98
PISTON TO CYLINDER BORE CLEARANCE ....99
CRANKSHAFT MAIN JOURNAL DIAMETER ... 100
CRANKSHAFT PIN JOURNAL DIAMETER ...... 100
OUT-OF-ROUND AND TAPER OF CRANK-
SHAFT ............................................................... 100
CRANKSHAFT RUNOUT .................................. 100
CONNECTING ROD BEARING OIL CLEAR-
ANCE ................................................................. 101
MAIN BEARING OIL CLEARANCE ................... 101
MAIN BEARING CRUSH HEIGHT .................... 102
CONNECTING ROD BEARING CRUSH
HEIGHT ............................................................. 102
MAIN BEARING CAP BOLT OUTER DIAMETER . 103
CONNECTING ROD BOLT OUTER DIAMETER . 103
CLOGGED OR DAMAGED OIL FILTER (FOR
INTAKE VALVE TIMING CONTROL) ................. 103
FLYWHEEL DEFLECTION (M/T MODELS) ...... 103
MOVEMENT AMOUNT OF FLYWHEEL (M/T
MODELS) ........................................................... 103
SERVICE DATA AND SPECIFICATIONS (SDS) .... 105
Standard and Limit ................................................ 105
GENERAL SPECIFICATIONS ........................... 105
DRIVE BELT ...................................................... 105
WATER CONTROL VALVE ................................ 105
EXHAUST MANIFOLD ...................................... 105
THERMOSTAT ................................................... 105
SPARK PLUG .................................................... 105
CYLINDER HEAD .............................................. 105
VALVE ................................................................ 106
CAMSHAFT AND CAMSHAFT BEARING ......... 109
CYLINDER BLOCK ............................................110
PISTON, PISTON RING AND PISTON PIN ...... 111
CONNECTING ROD ..........................................112
CRANKSHAFT ...................................................112
MAIN BEARING .................................................114
CONNECTING ROD BEARING .........................114

PRECAUTIONS
EM-3
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Revision: June 20062007 Versa
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EBS00VE8
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WA RN ING:

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 must be per-
formed by an authorized NISSAN/INFINITI 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 SRS 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 and/or orange harnesses or
harness connectors.
Precautions for Procedures without Cowl Top CoverEBS00VE9
When performing the procedure after removing cowl top cover, cover
the lower end of windshield.
Precautions Necessary for Steering Wheel Rotation After Battery DisconnectEBS00VEA
NOTE:

This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT
SYSTEM).

Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK″ position.

Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC″ position. At this time, the
steering lock will be released.
PIIB3706J

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)

EM-8Revision: June 2006
PREPARATION
2007 Versa
ST16610001
(J-23907)
Pilot bushing pullerRemoving crankshaft pilot bushing
KV11103000
(—)
Pulley pullerRemoving crankshaft pulley
KV991J0050
(J-44626)
Air fuel sensor SocketLoosening or tightening air fuel ratio A/F
sensor
a: 22 mm (0.87 in)
KV10114400
(J-38365)
Heated oxygen sensor wrenchLoosening or tightening rear heated oxy-
gen sensor
a: 22 mm (0.87 in)
KV11105210
(J-44716)
Stopper plateSecuring diveplate and flywheel
KV10115600
(J-38958)
Valve oil seal driftInstalling valve oil seal
Use side A.
a: 20 (0.79) dia
b: 13 (0.51) dia.
c: 10.3 (0.406) dia
d: 8 (0.31) dia.
e: 10.7 (0.421)
f: 5 (0.20)
KV10115801
(—)
Oil filter wrenchRemoving and installing oil filter
a: 64.3 mm (2.531 in) Tool number
(Kent-Moore No.)
Tool nameDescription
NT045
NT676
LBIA0444E
NT636
ZZA0009D
S-NT603
S-NT375