P0014 EVT CONTROLEC-171
< DTC/CIRCUIT DIAGNOSIS > [HR16DE]
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P0014 EVT CONTROL
DTC LogicINFOID:0000000012431387
DTC DETECTION LOGIC
NOTE:
If DTC P0014 is displayed with DTC P0078, first pe
rform trouble diagnosis for DTC P0078. Refer to EC-
182, "DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10 V and 16 V at
idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE-I
With CONSULT
1. Turn ignition switch ON and select “DATA MONITOR” mode of “ENGINE” using CONSULT.
2. Start engine and warm it up to the normal operating temperature.
3. Maintain the following conditions for at least 6 c onsecutive seconds. Hold the accelerator pedal as steady
as possible.
4. Let engine idle for 10 seconds.
5. Check 1st trip DTC. With GST
Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected?
YES >> Proceed to EC-172, "Diagnosis Procedure"
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-II
With CONSULT
1. Select “DATA MONITOR” mode of “ENGINE” using CONSULT.
2. Maintain the following conditions for at least 20 consecutive seconds.
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition
Possible cause
P0014 EXH/V TIM CONT-B1
(Exhaust valve timing control
performance) There is a gap between angle of
target and phase-control angle
degree. • Crankshaft position sensor
• Exhaust valve timing control position sensor
• Exhaust 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 exhaust valve timing control
ENG SPEED 1,200 - 2,000 rpm (A constant rotation is maintained.)
COOLAN TEMP/S More than 60° C (140°F)
Selector lever P or N position (CVT)
Neutral position (M/T)
Revision: August 2015
2016 Versa Note
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EC-172
< DTC/CIRCUIT DIAGNOSIS >[HR16DE]
P0014 EVT CONTROL
CAUTION:
Always drive at a safe speed.
3. Check 1st trip DTC.
With GST
Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected?
YES >> Proceed to EC-172, "Diagnosis Procedure"
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000012431388
1.CHECK OIL PRESSURE WARNING LAMP
1. Start engine.
2. Check oil pressure warning lamp and confirm it is not illumi- nated.
Is oil pressure warning lamp illuminated?
YES >> Check the engine oil level. Refer to LU-7, "Inspection".
NO >> GO TO 2.
2.CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE
Check the exhaust valve timing control solenoid valve. Refer to EC-173, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace exhaust valve timing control solenoid valve. Refer to EM-60, "
Exploded View".
3.CHECK CRANKSHAFT POSITION SENSOR
Check the crankshaft position sensor. Refer to EC-280, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace crankshaft position sensor. Refer to EM-93, "
Exploded View".
4.CHECK EXHAUST VALVE TIMING CONTROL POSITION SENSOR
Check the exhaust valve timing control position sensor. Refer to EC-284, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace exhaust valve timing control position sensor. Refer to EM-60, "
Exploded View".
5.CHECK CAMSHAFT (EXHAUST)
Check the following.
ENG SPEED 1,700 - 2,950 rpm (A constant rotati on is maintained.)
COOLAN TEMP/S More than 70 °C (158 °F)
Selector lever 1st or 2nd position
Driving location uphill Driving vehicle uphill
(Increased engine load will help maintain the driving
conditions required for this test.)
PBIA8559J
Revision: August 2015
2016 Versa Note
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EC-174
< DTC/CIRCUIT DIAGNOSIS >[HR16DE]
P0030, P0031, P0032
A/F SENSOR HEATER
P0030, P0031, P0032 A/F SENSOR HEATER
DTC LogicINFOID:0000000012723407
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm th at battery voltage is more than between 11 V at
idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for at least 10 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-174, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000012723408
1.CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect air fuel ratio (A/F) sensor 1 harness connector.
2. Turn ignition switch ON.
3. Check the voltage between A/F sensor 1 harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace error-detected parts.
DTC No. Trouble diagnosis name
(Trouble diagnosis con-
tent) DTC detecting condition Possible cause
P0030 A/F SEN 1 HTR (B1)
(Air fuel ratio (A/F) sensor
1 heater control circuit) Deterioration in A/F sensor 1 heater performance.
(Voltage signal transmitted from A/F sensor 1 heat-
er to ECM is higher/lower than voltage in the nor-
mal range.)
• Harness or connectors
(A/F sensor 1 heater circuit is open or
shorted.)
• A/F sensor 1 heater
P0031 A/F SEN 1 HTR (B1)
(Air fuel ratio (A/F) sensor
1 heater control circuit low) The current amperage in the A/F sensor 1 heater
circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM
through the A/F sensor 1 heater.)
P0032 A/F SEN 1 HTR (B1)
(Air fuel ratio (A/F) sensor
1 heater control circuit
high) The current amperage in the A/F sensor 1 heater
circuit is out of the normal range.
(An excessively high voltage signal is sent to ECM
through the A/F sensor 1 heater.) • Harness or connectors
(A/F sensor 1 heater circuit is short-
ed.)
• A/F sensor 1 heater
+
−Voltag e
A/F sensor 1
Connector Terminal F12 4Ground Battery voltage
Revision: August 2015 2016 Versa Note
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P0037, P0038 HO2S2 HEATEREC-177
< DTC/CIRCUIT DIAGNOSIS > [HR16DE]
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P0037, P0038 HO2S2 HEATER
DTC LogicINFOID:0000000012431393
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1. Turn ignition switch ON and select “DATA MONITOR” mode of “ENGINE” using CONSULT.
2. Start engine and warm it up to normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
5. Let engine idle for 1 minute.
6. Check 1st trip DTC.
With GST
Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected?
YES >> Proceed to EC-177, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000012431394
1.CHECK HO2S2 POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect heated oxygen sensor 2 (HO2S2) harness connector.
3. Turn ignition switch ON.
4. Check the voltage between HO2S2 harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition
Possible cause
P0037 HO2 HTR (B1)
(Heated oxygen sensor 2
heater control circuit low) The current amperage in the heated oxygen sensor 2
heater circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM
through the heated oxygen sensor 2 heater.) • Harness or connectors
(Heated oxygen sensor 2 heater
circuit is open or shorted.)
• Heated oxygen sensor 2 heater
P0038 HO2 HTR (B1)
(Heated oxygen sensor 2
heater control circuit high) The current amperage in the heated oxygen sensor 2
heater circuit is out of the normal range.
(An excessively high voltage signal is sent to ECM
through the heated oxygen sensor 2 heater.) • Harness or connectors
(Heated oxygen sensor 2 heater
circuit is shorted.)
• Heated oxygen sensor 2 heater
HO2S2 GroundVoltage
Connector Terminal
E63 2Ground Battery voltage
Revision: August 2015 2016 Versa Note
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EC-180
< DTC/CIRCUIT DIAGNOSIS >[HR16DE]
P0075 IVT CONTROL SOLENOID VALVE
P0075 IVT CONTROL SOLENOID VALVE
DTC LogicINFOID:0000000012431396
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
>> GO TO2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for 5 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-180, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000012431397
1.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect intake valve timing (IVT) control solenoid valve harness connector.
3. Turn ignition switch ON.
4. Check the voltage between intake valve timing control solenoid valve harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.
• Harness for open or short between intake valve timing control solenoid valve and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN
AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
DTC No. Trouble diagnosis content DTC detecting conditionPossible cause
P0075 Intake valve timing control
solenoid valve circuit An improper voltage is sent to the ECM
through intake valve timing control sole-
noid valve. • Harness or connectors
(Intake valve timing control solenoid valve
circuit is open or shorted.)
• Intake valve timing control solenoid valve
IVT control solenoid valve GroundVoltage
Connector Terminal
F23 2Ground Battery voltage
Revision: August 2015 2016 Versa Note
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EC-182
< DTC/CIRCUIT DIAGNOSIS >[HR16DE]
P0078 EVT CONTROL SOLENOID VALVE
P0078 EVT CONTROL SOLENOID VALVE
DTC LogicINFOID:0000000012431399
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
>> GO TO2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for 5 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-182, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000012431400
1.CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect exhaust valve timing (EVT) control solenoid valve harness connector.
3. Turn ignition switch ON.
4. Check the voltage between exhaust valve timing control solenoid valve harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector.
3. Check the continuity between EVT control sol enoid valve harness connector and IPDM E/R harness con-
nector.
4. Also check harness for short to ground.
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition
Possible cause
P0078 EX V/T ACT/CIRC-B1
(Exhaust valve timing control
solenoid valve circuit) An improper voltage is sent to the
ECM through exhaust valve timing
control solenoid valve. • Harness or connectors
(Exhaust valve timing control solenoid valve
circuit is open or shorted.)
• Exhaust valve timing control solenoid valve
EVT control solenoid valve GroundVoltage
Connector Terminal
F32 2Ground Battery voltage
EVT control solenoid valve IPDM E/R
Continuity
Connector Terminal Connector Terminal
F322F 423 9Exis te d
Revision: August 2015 2016 Versa Note
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P0101 MAF SENSOREC-185
< DTC/CIRCUIT DIAGNOSIS > [HR16DE]
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P0101 MAF SENSOR
DTC LogicINFOID:0000000012431402
DTC DETECTION LOGIC
NOTE:
If DTC P0101 is displayed with other DTC, first perform the trouble diagnosis for other DTC.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following proce-
dure before conducti ng the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and warm it up to normal operating temperature.
2. Drive the vehicle for at least 5 seconds under the following conditions: CAUTION:
Always drive vehicle at safe speed.
NOTE:
• The gear must be fixed while driving the vehicle.
• Keep the accelerator pedal as steady as possible during cruising.
3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-185, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000012431403
1.CHECK INTAKE SYSTEM
Check the following items to see the installati on condition and the connection condition of the joint.
• Air duct
• Vacuum hoses
• Intake air passage between air duct and intake manifold
Is the inspection result normal?
YES >> GO TO 2.
NO >> Reconnect or replace error-detected parts.
2.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition
Possible cause
P0101 MAF SEN/CIRCUIT-B1
[Mass air flow (MAF) sensor
circuit range/performance] • A high voltage from the sensor is sent to
ECM under light load driving condition.
• A low voltage from the sensor is sent to
ECM under heavy load driving condition. • Harness or connectors
(MAF sensor circuit is open or shorted.)
• Intake air leaks (e.g. poor connection)
•MAF sensor
• EVAP control system pressure sensor
• Intake air temperature sensor
Selector lever Suitable position
Vehicle speed 40 km/h (25 MPH) or more
Revision: August 2015 2016 Versa Note
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P0101 MAF SENSOREC-187
< DTC/CIRCUIT DIAGNOSIS > [HR16DE]
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NO >> Replace MAF sensor (with intake air temperature sensor). Refer to
EM-26, "Removal and Installa-
tion".
8.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Check the EVAP control system pressure sensor. Refer to EC-313, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 9.
NO >> Replace EVAP control system pressure sensor. Refer to FL-19, "
Removal and Installation".
9.CHECK MAF SENSOR
Check the MAF sensor. Refer to EC-187, "
Component Inspection".
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".
NO >> Replace MAF sensor. Refer to EM-26, "
Removal and Installation".
Component InspectionINFOID:0000000012431404
1.CHECK MASS AIR FLOW SENSOR-I
With CONSULT
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Start engine and warm it up to normal operating temperature.
4. Connect CONSULT and select “DATA MONITOR” mode of “ENGINE”.
5. Select “MAS A/F SE-B1” and check indication.
*: Check for linear voltage rise in response to engine being increased to about 4,000 rpm.
Without CONSULT
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Start engine and warm it up to normal operating temperature.
4. Check the voltage between ECM harness connector and ground.
*: Check for linear voltage rise in response to engine being increased to about 4,000 rpm.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK FOR THE CAUSE OF UNEVEN AIR FLOW THROUGH MASS AIR FLOW SENSOR
1. Turn ignition switch OFF.
2. 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
Monitor item Condition MAS A/F SE-B1
MAS A/F SE-B1 Ignition switch ON (Engine stopped.)
Approx. 0.4 V
Idle (Engine is warmed-up to normal operating temperature.) 0.8 - 1.3 V
2,500 rpm (Engine is warmed-up to normal operating temperature.) 1.4 - 1.9 V
Idle to about 4,000 rpm 0.8 - 1.3 V to Approx. 2.4 V*
ECM
Condition Voltage
Connector +
−
Te r m i n a l
F11 45 52 Ignition switch ON (Engine stopped.)
Approx. 0.4 V
Idle (Engine is warmed-up to normal operating temperature.) 0.8 - 1.3 V
2,500 rpm (Engine is warmed-up to normal operating temperature.) 1.4 - 1.9 V
Idle to about 4,000 rpm 0.8 - 1.3 V to Approx. 2.4 V*
Revision: August 2015 2016 Versa Note
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