sensor NISSAN LATIO 2011 Service Repair Manual

EC-624
< SERVICE INFORMATION >[MR18DE]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
DescriptionINFOID:0000000006341742
The specification (SP) value indicates the tolerance of
the value that is displayed in “SPEC” of “DATA MONI-
TOR” mode of CONSULT-III during normal operation of the Engine Control System. When the value in
“SPEC” of “DATA MONITOR” mode is within the SP value, the Engine Control System is confirmed OK. When
the value in “SPEC” of “DATA MONITOR” mode is NOT within the SP value, the Engine Control System may
have one or more malfunctions.
The SP value is used to detect malfunctions that may af fect the Engine Control System, but will not light the
MIL.
The SP value will be displayed for the following three items:
• B/FUEL SCHDL (The fuel injection pulse width progr ammed into ECM prior to any learned on board correc-
tion)
• A/F ALPHA-B1 (The mean value of air-fuel ratio feedback correction factor per cycle)
• MAS A/F SE-B1 (The signal voltage of the mass air flow sensor)
Testing ConditionINFOID:0000000006341743
• Vehicle driven distance: More than 5,000 km (3,107 miles)
• Barometric pressure: 98.3 - 104.3 kPa (1.003 - 1.064 kg/cm
2, 14.25 - 15.12 psi)
• Atmospheric temperature: 20 - 30 °C (68 - 86° F)
• Engine coolant temperature: 75 - 95 °C (167 - 203° F)
• Transmission: Warmed-up
- A/T and CVT models: After the engine is warmed up to normal operating temperature, drive vehicle until
“FLUID TEMP SE” (A/T or CVT) fluid temperature sensor signal) indicates more than 60 °C (140° F).
- M/T models: After the engine is warmed up to normal operating temperature, drive vehicle for 5 minutes.
• Electrical load: Not applied
- Rear window defogger switch, air conditioner switch, lighting switch are OFF. Steering wheel is straight ahead.
• Engine speed: Idle
Inspection ProcedureINFOID:0000000006341744
NOTE:
Perform “SPEC” of “DATA MONITOR” mode in maximum scale display.
1. Perform EC-574, "
Basic Inspection".
2. Confirm that the testing conditions indicated above are met.
3. Select “B/FUEL SCHDL”, “A/F ALPHA-B1” and “MAS A/F SE-B1” in “SPEC” of “DATA MONITOR” mode
with CONSULT-III.
4. Make sure that monitor items are within the SP value.
5. If NG, go to EC-624, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006341745
OVERALL SEQUENCE
Revision: May 2010 2011 Versa

EC-628
< SERVICE INFORMATION >[MR18DE]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
>> GO TO 8.
8.CHECK “A/F ALPHA-B1”
1. Start engine.
2. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITO R” mode, and make sure that the indication is within
the SP value.
OK or NG
OK >> INSPECTION END
NG >> GO TO 9.
9.PERFORM POWER BALANCE TEST
1. Perform “POWER BALANCE” in “ACTIVE TEST” mode.
2. Make sure that the each cylinder produces a momentary engine speed drop.
OK or NG
OK >> GO TO 12.
NG >> GO TO 10.
10.DETECT MALFUNCTIONING PART
1. Check the following.
- Ignition coil and its circuit (Refer to EC-1019
.)
- Fuel injector and its circuit (Refer to EC-1009
.)
- Intake air leakage
- Low compression pressure (Refer to EM-186
.)
2. If NG, repair or replace the malfunctioning part. If OK, replace fuel injector. (It may be caus ed by leakage from fuel injector or clogging.)
>> GO TO 11.
11 .CHECK “A/F ALPHA-B1”
1. Start engine.
2. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITO R” mode, and make sure that the indication is within
the SP value.
OK or NG
OK >> INSPECTION END
NG >> GO TO 12.
12.CHECK A/F SENSOR 1 FUNCTION
Perform all DTC Confirmation Procedure related with A/F sensor 1.
• For DTC P0130, refer to EC-704, "
DTC Confirmation Procedure".
• For DTC P0131, refer to EC-710, "
DTC Confirmation Procedure".
• For DTC P0132, refer to EC-716, "
DTC Confirmation Procedure".
• For DTC P014C, P014D refer to EC-750, "
DTC Confirmation Procedure".
• For DTC P2A00, refer to EC-989, "
DTC Confirmation Procedure".
OK or NG
OK >> GO TO 15.
NG >> GO TO 13.
13.CHECK A/F SENSOR 1 CIRCUIT
Perform Diagnostic Procedure according to corresponding DTC.
>> GO TO 14.
14.CHECK “A/F ALPHA-B1”
1. Start engine.
2. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITO R” mode, and make sure that the indication is within
the SP value.
OK or NG
Revision: May 2010 2011 Versa

TROUBLE DIAGNOSIS - SPECIFICATION VALUEEC-629
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OK >>
INSPECTION END
NG >> GO TO 15.
15.DISCONNECT AND RECONNECT ECM HARNESS CONNECTOR
1. Stop the engine.
2. Disconnect ECM harness connector. Check pin term inal and connector for damage, and then reconnect it.
>> GO TO 16.
16.CHECK “A/F ALPHA-B1”
1. Start engine.
2. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within
the SP value.
OK or NG
OK >> INSPECTION END
NG >> Detect malfunctioning part according to EC-592, "
Symptom Matrix Chart".
17.CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” m ode, and make sure that the indication is within the
SP value.
OK or NG
OK >> INSPECTION END
NG (More than the SP value)>>GO TO 18.
NG (Less than the SP value)>>GO TO 25.
18.DETECT MALFUNCTIONING PART
1. Check for the cause of large engine friction. Refer to the following.
- Engine oil level is too high
- Engine oil viscosity
- Belt tension of alternator, A/C compressor, etc. is excessive
- Noise from engine
- Noise from transmission, etc.
2. Check for the cause of insufficient combustion. Refer to the following.
- Valve clearance malfunction
- Intake valve timing control function malfunction
- Camshaft sprocket installation malfunction, etc.
>> Repair or replace malfunctioning part, and then GO TO 30.
19.CHECK INTAKE SYSTEM
Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.
• Crushed air ducts
• Malfunctioning seal of air cleaner element
• Uneven dirt of air cleaner element
• Improper specification of intake air system
OK or NG
OK >> GO TO 21.
NG >> Repair or replace malfunctioning part, and then GO TO 20.
20.CHECK “A/F ALPHA-B1” AND “B/FUEL SCHDL”
Select “A/F ALPHA-B1” and “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that the
each indication is within the SP value.
OK or NG
OK >> INSPECTION END
NG (“B/FUEL SCHDL” is more, “A/F ALPHA- B1” is less than the SP value)>>GO TO 21.
21.DISCONNECT AND RECONNECT MASS AI R FLOW SENSOR HARNESS CONNECTOR
1. Stop the engine.
Revision: May 2010 2011 Versa

EC-630
< SERVICE INFORMATION >[MR18DE]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
2. Disconnect mass air flow sensor harness connector. Check pin terminal and connector for damage and
then reconnect it again.
>> GO TO 22.
22.CHECK “A/F ALPHA-B1”
1. Start engine.
2. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITO R” mode, and make sure that the indication is within
the SP value.
OK or NG
OK >> 1. Detect malfunctioning part of mass air flow sensor circuit and repair it. Refer to EC-664.
2. GO TO 29.
NG >> GO TO 23.
23.CHECK “MAS A/F SE-B1”
Select “MAS A/F SE-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within the
SP value.
OK or NG
OK >> GO TO 24.
NG (More than the SP value)>>Replace mass air flow sensor, and then GO TO 29.
24.REPLACE ECM
1. Replace ECM.
2. Perform initialization of NVIS(NATS) system and registration of all NVIS (NATS) ignition key IDs.
Refer to BL-247, "
ECM Re-communicating Function".
3. Perform EC-580, "
VIN Registration".
4. Perform EC-580, "
Accelerator Pedal Released Position Learning".
5. Perform EC-580, "
Throttle Valve Closed Position Learning".
6. Perform EC-580, "
Idle Air Volume Learning".
>> GO TO 29.
25.CHECK INTAKE SYSTEM
Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.
• Crushed air ducts
• Malfunctioning seal of air cleaner element
• Uneven dirt of air cleaner element
• Improper specification of intake air system
OK or NG
OK >> GO TO 27.
NG >> Repair or replace malfunctioning part, and then GO TO 26.
26.CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within the
SP value.
OK or NG
OK >> INSPECTION END
NG (Less than the SP value)>>GO TO 27.
27.CHECK “MAS A/F SE-B1”
Select “MAS A/F SE-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within the
SP value.
OK or NG
OK >> GO TO 28.
NG (Less than the SP value)>>Replace mass air flow sensor, and then GO TO 30.
28.CHECK INTAKE SYSTEM
Check for the cause of air leak after the mass air flow sensor. Refer to the following.
Revision: May 2010 2011 Versa

DTC P0011 IVT CONTROLEC-645
< SERVICE INFORMATION > [MR18DE]
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DTC P0011 IVT CONTROL
DescriptionINFOID:0000000006341766
SYSTEM DESCRIPTION
*: This signal is sent to the ECM through CAN communication line.
This mechanism hydraulically controls cam phases c
ontinuously with the fixed operating angle of the intake
valve. The ECM receives signals such as cranks haft position, camshaft position, engine speed, and engine
coolant temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing control sole-
noid valve depending on driving status. This makes it po ssible to control the shut/open timing of the intake
valve to increase engine torque in low/mid speed range and output in high-speed range.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000006341767
Specification data are reference values.
Sensor Input signal to ECMECM functionActuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed and piston position
Intake valve
timing controlIntake valve timing control
solenoid valve
Engine coolant temperature sensor
Engine coolant temperature
ABS actuator and electric unit (control unit)
Vehicle speed*
Combination meter
PBIB3333E
Monitor item Condition Specification
INT/V TIM (B1) • Engine: After warming up
• Air conditioner switch: OFF
• Shift lever: P or N (A/T, CVT),
Neutral (M/T)
•No load Idle
−5 ° - 5 °CA
When revving engine up to 2,000 rpm
quickly Approx. 0
° - 40 °CA
INT/V SOL (B1) • Engine: After warming up
• Air conditioner switch: OFF
• Shift lever: P or N (A/T, CVT),
Neutral (M/T)
•No load Idle
0% - 2%
When revving engine up to 2,000 rpm
quickly Approx. 0% - 90%
Revision: May 2010
2011 Versa

EC-646
< SERVICE INFORMATION >[MR18DE]
DTC P0011 IVT CONTROL
On Board Diagn osis Logic
INFOID:0000000006341768
FA I L - S A F E M O D E
ECM enters in fail-safe mode when the malfunction is detected.
DTC Confirmation ProcedureINFOID:0000000006341769
CAUTION:
Always drive at a safe speed.
NOTE:
•If DTC P0011 is displayed with DTC P0075, first perform trouble diagnosis for DTC P0075.
See EC-659
.
• 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:
Before performing the following procedure, confi rm that battery voltage is between 10 V and 16 V at
idle.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.
2. Start engine and warm it up to the normal operating temperature.
3. Maintain the following conditions for at least 6 consecutive seconds. Hold the accelerator pedal as steady as possible.
4. Let engine idle for 10 seconds.
5. If 1st trip DTC is detected, go to EC-647, "
Diagnosis Procedure".
If 1st trip DTC is not detected, go to next step.
6. Maintain the following conditions for at least 10 consecutive seconds.
7. If 1st trip DTC is detected, go to EC-647, "
Diagnosis Procedure".
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0011
0011 Intake valve timing control
performance There is a gap between angle of target and
phase-control angle degree. • Crankshaft position sensor (POS)
• Camshaft position
sensor (PHASE)
• Intake valve timing control solenoid valve
• Accumulation of debris to the signal pick-up portion of the camshaft
• Timing chain installation
• Foreign matter caught in the oil groove for in- take valve timing control
Detected items Engine operating condition in fail-safe mode
Intake valve timing control The signal is not energized to the solenoid valve and the valve control does not function
ENG SPEED1,200 - 2,000 rpm (A constant rotati on is maintained.)
COOLAN TEMP/S More than 60 °C (140 °F)
B/FUEL SCHDL More than 3.87 msec
Shift lever P or N position (A/T, CVT)
Neutral position (M/T)
ENG SPEED 1,200 - 3,175 rpm (A constant rotation is maintained.)
COOLAN TEMP/S More than 65 °C (149 °F)
Shift lever 1st or 2nd position
Driving location Driving vehicle uphill
(Increased engine load will help maintain the driving
conditions required for this test.)
Revision: May 2010
2011 Versa

DTC P0011 IVT CONTROLEC-647
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WITH GST
Follow the procedure “WITH CONSULT-III” above.
Diagnosis ProcedureINFOID:0000000006341770
1.CHECK OIL PRESSURE WARNING LAMP
1. Start engine.
2. Check oil pressure warning lamp and confirm it is not illumi- nated.
OK or NG
OK >> GO TO 2.
NG >> Go to MA-30, "
ENGINE OIL : Inspection".
2.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to EC-648, "
Component Inspection".
OK or NG
OK >> GO TO 3.
NG >> Replace intake valve timing control solenoid valve.
3.CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to EC-798, "
Component Inspection".
OK or NG
OK >> GO TO 4.
NG >> Replace crankshaft position sensor (POS).
4.CHECK CAMSHAFT POSITI ON SENSOR (PHASE)
Refer to EC-803, "
Component Inspection".
OK or NG
OK >> GO TO 5.
NG >> Replace camshaft position sensor (PHASE).
5.CHECK CAMSHAFT (INTAKE)
Check the following.
• Accumulation of debris to the signal plate of camshaft (1) rear end
• Chipping signal plate of camshaft rear end
OK or NG
OK >> GO TO 6.
NG >> Remove debris and clean the signal plate of camshaft rear end or replace camshaft.
6.CHECK TIMING CHAIN INSTALLATION
Check service records for any recent repairs that may cause timing chain misaligned.
Are there any service records that may cause timing chain misaligned?
Ye s o r N o
Yes >> Check timing chain installation. Refer to EM-160, "Removal and Installation".
No >> GO TO 7.
7.CHECK LUBRICATION CIRCUIT
PBIA8559J
PBIA9557J
Revision: May 2010 2011 Versa

EC-648
< SERVICE INFORMATION >[MR18DE]
DTC P0011 IVT CONTROL
Refer to
EM-170, "Removal and Installation".
OK or NG
OK >> GO TO 8.
NG >> Clean lubrication line.
8.CHECK INTERMITTENT INCIDENT
Refer to EC-632
.
For Wiring Diagram, refer to EC-794, "
Wiring Diagram" for CKP sensor (POS) and EC-800, "Wiring Diagram"
for CMP sensor (PHASE).
>>INSPECTION END
Component InspectionINFOID:0000000006341771
INTAKE VALVE TIMING CONTROL SOLENOID VALVE
1. Disconnect intake valve timing control solenoid valve harness connector.
2. Check resistance between intake valve timing control solenoid
valve as follows.
If NG, replace intake valve timing control solenoid valve.
If OK, go to next step.
3. Remove intake valve timing control solenoid valve.
4. Provide 12 V DC between intake valve timing control solenoid valve terminals and then interrupt it. Make sure that the plunger
moves as shown in the figure.
CAUTION:
Do not apply 12 V DC continuously for 5 seconds or more.
Doing so may result in damage to the coil in intake valve
timing control solenoid valve.
If NG, replace intake valve timing control solenoid valve.
NOTE:
Always replace O-ring when intake valve timing control
solenoid valve is removed.
Removal and InstallationINFOID:0000000006341772
INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to EM-170, "Removal and Installation".
Terminal Resistance
1 and 2 6.7 - 7.7 Ω [at 20°C (68 °F)]
1 or 2 and ground ∞
Ω
(Continuity should not exist.)
PBIB0574E
PBIB2388E
Revision: May 2010 2011 Versa

DTC P0031, P0032 A/F SENSOR 1 HEATEREC-649
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DTC P0031, P0032 A/F SENSOR 1 HEATER
DescriptionINFOID:0000000006341773
SYSTEM DESCRIPTION
The ECM performs ON/OFF duty control of the A/F
sensor 1 heater corresponding to the engine operating
condition to keep the temperature of A/F sensor 1 element at the specified range.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000006341774
Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000006341775
DTC Confirmation ProcedureINFOID:0000000006341776
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:
Before performing the following pr ocedure, confirm that battery voltage is between 10.5 V and 16 V at
idle.
1. Start engine and run it for at least 10 seconds at idle speed.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to EC-651, "
Diagnosis Procedure".
SensorInput Signal to ECM ECM
function Actuator
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS) Engine speed
Air fuel ratio (A/F) sensor 1
heater control Air fuel ratio (A/F) sensor 1 heat-
er
Mass air flow sensor Amount of intake air
Monitor item ConditionSpecification
A/F S1 HTR (B1) • Engine: After warming up, idle the engine
(More than 140 seconds after starting engine.) 4 - 100%
DTC No.Trouble diagnosis
name DTC detecting condition
Possible cause
P0031
0031 Air fuel ratio (A/F)
sensor 1 heater
control circuit low The current amperage in
the air fuel ratio (A/F)
sensor 1 heater circuit is out of the normal range.
[An excessively low voltage signal is sent to ECM
through the air fuel ratio (A/F) sensor 1 heater.] • Harness or connectors
[Air fuel ratio (A/F) sensor 1 heater circuit is
open or shorted.]
• Air fuel ratio (A/F) sensor 1 heater
P0032
0032 Air fuel ratio (A/F)
sensor 1 heater
control circuit high The current amperage in
the air fuel ratio (A/F)
sensor 1 heater circuit is out of the normal range.
[An excessively high voltage signal is sent to ECM
through the air fuel ratio (A/F) sensor 1 heater.] • Harness or connectors
[Air fuel ratio (A/F) sensor 1 heater circuit is
shorted.]
• Air fuel ratio (A/F) sensor 1 heater
Revision: May 2010 2011 Versa

EC-650
< SERVICE INFORMATION >[MR18DE]
DTC P0031, P0032
A/F SENSOR 1 HEATER
Wiring Diagram
INFOID:0000000006341777
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-III.
CAUTION:
AABWA0320GB
Revision: May 2010 2011 Versa