2011 NISSAN LATIO length

EC-518
< SERVICE INFORMATION >[MR18DE]
ENGINE CONTROL SYSTEM
*1: This sensor is not used to control the engine system under normal conditions.
*2: This signal is sent to the ECM through CAN communication line.
*3: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is
determined by the ECM. The ECM controls the length of
time the valve remains open (injection pulse duration). T he amount of fuel injected is a program value in the
ECM memory. The program value is preset by engine operating conditions. These conditions are determined
by input signals (for engine speed and intake air) from t he crankshaft position sensor (POS), camshaft position
sensor (PHASE) and the ma ss air flow sensor.
VARIOUS FUEL INJECTION I NCREASE/DECREASE COMPENSATION
In addition, the amount of fuel injected is compensated to improve engine performance under various operat-
ing conditions as listed below.
• During warm-up
• When starting the engine
• During acceleration
• Hot-engine operation
• When selector lever is changed from N to D (A/T and CVT models)
• High-load, high-speed operation
• During deceleration
• During high engine speed operation
MIXTURE RATIO FEEDBACK CONTROL (CLOSED LOOP CONTROL)
Sensor Input Signal to ECMECM functionActuator
Crankshaft position sensor (POS) Engine speed*
3
Piston position
Fuel injection
& mixture ratio
controlFuel injector
Camshaft position sensor (PHASE)
Mass air flow sensor
Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Air fuel ratio (A/F) sensor 1 Density of oxygen in exhaust gas
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Park/neutral position (PNP) signal Gear position
Battery Battery voltage*
3
Knock sensorEngine knocking condition
EPS control unit Power steering operation*
2
Heated oxygen sensor 2*1Density of oxygen in exhaust gas
Air conditioner switch Air conditioner operation*
2
ABS actuator and electric unit (control unit)
Vehicle speed*2
Combination meter
PBIB3020E
Revision: May 2010 2011 Versa

EC-568
< SERVICE INFORMATION >[MR18DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
tified codes can be identified by using the CONSULT-II
I or GST. A DTC will be used as an example for how to
read a code.
A particular trouble code can be identified by the number of four-digit numeral flashes. The “zero” is indicated
by the number of ten flashes. The “A” is indicated by the number of eleven flash. The length of time the
1,000th-digit numeral flashes on and off is 1.2 seconds consisting of an ON (0.6-second) - OFF (0.6-second)
cycle. The 100th-digit numeral and lower digit numer als consist of a 0.3-second ON and 0.3-second OFF
cycle. A change from one digit numeral to another occurs at an interval of 1.0-second OFF. In other words, the
later numeral appears on the display 1.3 seconds after the former numeral has disappeared.
A change from one trouble code to another occu rs at an interval of 1.8-second OFF.
In this way, all the detected malfunctions are classi fied by their DTC numbers. The DTC 0000 refers to no mal-
function. (See EC-504
)
How to Erase Diagnostic Test Mode II (Self-diagnostic Results)
The DTC can be erased from the back-up memory in the ECM by depressing accelerator pedal.
Refer to "How to Erase Diagnostic Test Mode II (Self-diagnostic Results)".
• If the battery is disconnected, the DTC will be lost from the backup memory within 24 hours.
• Be careful not to erase the stored memo ry before starting trouble diagnoses.
OBD System Operation ChartINFOID:0000000006341721
RELATIONSHIP BETWEEN MIL, 1ST TRIP DTC, DTC, AND DETECTABLE ITEMS
• When a malfunction is detected for the first time, the 1st trip DTC and the 1st trip freeze frame data are
stored in the ECM memory.
• When the same malfunction is detected in two consec utive trips, the DTC and the freeze frame data are
stored in the ECM memory, and the MIL will come on. For details, refer to EC-541, "
Two Trip Detection
Logic".
• The MIL will go off after the vehicle is driven 3 time s (driving pattern B) with no malfunction. The drive is
counted only when the recorded driving pattern is met (as stored in the ECM). If another malfunction occurs
while counting, the counter will reset.
• The DTC and the freeze frame data will be stored until the vehicle is driven 40 times (driving pattern A) with-
out the same malfunction recurring (except for Misfire and Fuel Injection System). For Misfire and Fuel Injec-
tion System, the DTC and freeze frame data will be stored until the vehicle is driven 80 times (driving pattern
PBIB3005E
Revision: May 2010 2011 Versa

FUEL INJECTOREC-1009
< SERVICE INFORMATION > [MR18DE]
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FUEL INJECTOR
Component DescriptionINFOID:0000000006342230
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector circuit, the coil in the fuel injec-
tor is energized. The energized coil pulls the ball valve back and
allows fuel to flow through the fuel injector into the intake manifold.
The amount of fuel injected depends upon the injection pulse dura-
tion. Pulse duration is the length of time the fuel injector remains
open. The ECM controls the injection pulse duration based on
engine fuel needs.
CONSULT-III Reference Val
ue in Data Monitor ModeINFOID:0000000006342231
Specification data are reference values.
PBIA9664J
Monitor item Condition Specification
B/FUEL SCHDL See EC-624
.
INJ PULSE-B1 • Engine: After warming up
• Air conditioner switch: OFF
• Shift lever: P or N (A/T, CVT),
Neutral (M/T)
•No load Idle
2.0 - 3.0 msec
2,000 rpm 1.9 - 2.9 msec
Revision: May 2010 2011 Versa

CAMSHAFTEM-61
< ON-VEHICLE REPAIR > [HR16DE]
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• Attach the rubber nozzle narrowed to the top of the air gun to
prevent air leakage from the oil hole. Securely apply the air
pressure to the oil hole (A).
CAUTION:
• There are other oil holes in the side grooves. Never use the incorrect oil holes.
• Be sure not to damage the oil path with the tip of the air
gun.
• Wipe all the oil off the air gun to prevent oil from being
blown all over along with the air, and the area around the
air gun should be wiped wi th a rag when applying air
pressure. Eye protection should be worn as needed.
NOTE:
The air pressure is used to move the lock pin into the disengage position.
c. Hold the camshaft sprocket (INT) with hands, and then apply the power counterclockwise/clockwise alter-
natively.
• Finally rotate the sprocket of the camshaft sprocket (INT) counterclockwise [the direction shown by the
arrow ( )].
• Perform the work while applying the air pressure to the oil hole.
• If the lock pin is not released by hands, tap the camshaft sprocket (INT) (1) lightly with a plastic hammer.
• If the camshaft sprocket (INT) (1) is not rotated counterclock- wise even if the above procedures are performed, check the
air pressure and the oil hole position.
d. While doing the above, once you hear a click (the sound of the internal lock pin disengaging) from inside the camshaft sprocket
(INT), start turning the camshaft sprocket (INT) in the counter-
clockwise direction in the most advanced angle position.
• Keep the air pressure on.
• If there is no click, as soon as the vane-side (camshaft side)starts moving independently of the sprocket, the lock pin has
become disengaged.
• Make sure that it is in the most advanced angle position by seeing if the stopper pin groove (A) and the stopper pin hole (B) are matched up as shown.
e. Complete the applying procedure of air pressu re and the holding procedure of camshaft (INT).
f. Insert the stopper pin (A) into the stopper pin holes in the cam- shaft sprocket (INT) (1) and lock in the most advanced angle
position.
CAUTION:
No load is exerted on the stop per pin (spring reaction, etc.).
Since it comes out easily, secure it with tape (B) to prevent
it from coming out.
NOTE:
The stopper pin shows one example of a hexagonal wrench for
2.5 mm (0.098 in) [length of inserted section: approximately 15
mm (0.59 in)].
ALBIA0662ZZ
ALBIA0663ZZ
C : Most retarded angle (lock pin engaged)
D : Most advanced angle
PBIC3684E
ALBIA0664ZZ
Revision: May 2010 2011 Versa

SERVICE DATA AND SPECIFICATIONS (SDS)EM-115
< SERVICE DATA AND SPECIFICATIONS (SDS) [HR16DE]
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VA LV E G U I D E
Unit: mm (in)
VA LV E S E AT
Unit: mm (in)
“b”
Intake
1.0 (0.039)
Exhaust
“c” Intake 2.1 - 2.8 (0.083 - 0.110)
Exhaust
2.3 - 3.0 (0.091 - 0.118)
“c ′ ” Intake
3.0 (0.118)
Exhaust –
Valve stem diameter “d ” Intake
4.965 - 4.980 (0.1955 - 0.1961)
Exhaust 4.955 - 4.970 (0.1951 - 0.1957)
Valve seat angle “ α” Intake
45°15 ′ - 45 °45 ′
Exhaust
Items StandardOversize (service) [0.2 (0.008)]
Valve guide Outer diameter
9.023 - 9.034 (0.3552 - 0.3557) 9.223 - 9.234 (0.3631 - 0.3635)
Inner diameter (Finished size) 5.000 - 5.018 (0.1969 - 0.1976)
Cylinder head valve guide hole diameter 8.975 - 8.996 (0.3533 - 0.3542) 9.175 - 9.196 (0.3612 - 0.3620)
Interference fit of valve guide 0.027 - 0.059 (0.0011 - 0.0023)
Items StandardLimit
Valve guide clearance Intake
0.020 - 0.053 (0.0008 - 0.0021)
0.1 (0.004)
Exhaust 0.030 - 0.063 (0.0012 - 0.0025)
Projection length “H” 11.4 - 11.8 (0.449 - 0.465)
PBIC2187E
ItemsStandardOversize (service) [0.5 (0.02)]
Cylinder head seat recess diameter “D” Intake 31.400 - 31.416 (1.2362 - 1.2368) 31.900 - 31.916 (1.2559 - 1.2565) Exhaust 25.900 - 25.916 (1.0197 - 1.0203) 26.400 - 26.416 (1.0394 - 1.0400)
PBIC2745E
Revision: May 2010 2011 Versa

EM-132
< SERVICE INFORMATION >[MR18DE]
DRIVE BELTS
DRIVE BELTS
ComponentINFOID:0000000005930997
Checking Drive BeltsINFOID:0000000005930998
WARNING:
Be sure to perform this step
when the engine is stopped.
NOTE:
On vehicles not equipped with A/C, there is an idler pulley in the position for the drive belt routing.
• Make sure that the indicator (notch on fixed side) of drive belt auto-tensioner is within the possible use
range.
NOTE:
• Check the drive belt auto-tensioner indication when the engine is cold.
• When new drive belt is installed, the indicator (notch on fixed side) should be within the range.
• Visually check entire drive belt for wear, damage or cracks.
• If the indicator (notch on fixed side) is out of t he possible use range or belt is damaged, replace drive belt.
Tension AdjustmentINFOID:0000000005930999
Belt tension is not necessary, as it is automatically adjusted by drive belt auto-tensioner.
Removal and InstallationINFOID:0000000005931000
REMOVAL
1. Remove fender protector (RH). Refer to EI-26, "Removal and Installation".
2. Hold the hexagonal part (A) of drive belt auto-tensioner (1) with a wrench securely. Then move the wrench handle in the direc-
tion of arrow (loosening direction of tensioner).
WARNING:
Never place hand in a location where pinching may occur if
the holding tool acci dentally comes off.
CAUTION:
Do not loosen the auto-tensione r pulley bolt. (Do not turn it
counterclockwise.) If turned counterclockwise, the com-
plete auto-tensioner must be replaced as a unit, including
pulley.
3. Insert a rod such as short-length screwdriver approximately 6 mm (0.24 in) in diameter into the hole (B) of t he retaining boss to fix drive belt auto-tensioner.
• Leave tensioner pulley arm locked until belt is installed again.
4. Remove drive belt.
INSTALLATION
1. Generator 2. Drive belt auto–tensioner 3. Crankshaft pulley
4. A/C compressor (models with A/C)
Idler pulley (models without A/C) 5. Water pump
6. Drive belt
A. Possible use range B. Range when new drive belt is installed C. Indicator
PBIC3137J
PBIC3936E
Revision: May 2010 2011 Versa

EM-176
< SERVICE INFORMATION >[MR18DE]
CAMSHAFT
5. Install camshaft bracket bolts in three stage in numerical order
as shown.
• There are two types of bolts. Locate the bolts as shown.
6. Tighten all bolts in numerical order in three steps.
7. Install the camshaft sprocket (INT) (2) to the camshaft (INT). NOTE:
Align the matching mark (A) applied during removal. Securely
align the knock pin and the pin hole, and then install them.
8. Tighten camshaft (INT) sprocket bolt. NOTE:
Secure the hexagonal part of camshaft (INT) using wrench to tighten bolt.
9. Turn 67 degrees clockwise (angle tightening) using Tool (B).
CAUTION:
Never judge by visual inspect ion without an angle wrench.
: Engine front
M6 bolts [thread length: 57.5 mm (2.264 in)]
: 13, 14 and 15
M6 bolts [thread length: 35.00 mm (1.378 in)] : Except the above
Step 1 : 1.96 N·m (0.20 kg-m, 17 in-lb)
Step 2 : 5.88 N·m (0.60 kg-m, 52 in-lb)
Step 3 : 9.5 N·m (0.97 kg-m, 84 in-lb)
1 : Camshaft bracket : Engine front
PBIC3176J
PBIC3992J
Camshaft sprocket bolt (INT) : 35.0 N·m (3.6 kg-m, 26 ft-lb)
1 : Camshaft sprocket (INT)
A : Camshaft (INT) hexagonal part
Tool number : KV10112100 (BT-8653-A)
PBIC3455J
Revision: May 2010 2011 Versa

EM-222
< SERVICE INFORMATION >[MR18DE]
CYLINDER BLOCK
• Check with a connecting rod aligner.
• If it exceeds the limit, replace connecting rod assembly.
CONNECTING ROD BIG END DIAMETER
• Install connecting rod cap (1) without connecting rod bearing
installed, and tightening connecting rod bolts to the specified
torque. Refer to EM-203, "
Disassembly and Assembly" for the
tightening procedure.
• Measure the inner diameter of connecting rod big end with an inside micrometer.
• If out of the standard, replace connecting rod assembly.
CONNECTING ROD BUSHING OIL CLEARANCE
Connecting Rod Bushing Inner Diameter
Measure the inner diameter of connecting rod bushing with an inside
micrometer (A).
Piston Pin Outer Diameter
C : Feeler gauge
Bend (A): Limit: 0.15 mm (0.0059 in) per 100 mm (3.94 in) length
To r s i o n ( B ) : Limit: 0.30 mm (0.0118 in) per 100 mm (3.94 in) length
PBIC3268J
2 : Connecting rod
A : Example
B : Measuring direction of inner diameter
Standard: 47.000 - 47.013 mm (1.8504 - 1.8509 in)
PBIC3269J
Standard: 20.000 - 20.012 mm (0.7874 - 0.7879 in)
PBIC3270J
Revision: May 2010 2011 Versa