sensor NISSAN 350Z 2007 Z33 Engine Control Manual Online

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-139
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Revision: 2006 November2007 350Z
22. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “SPEC” of "DATA MONITOR" mode, and make sure that the
each 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-197, "
DTC P0101, P010B MAF SENSOR" .
2. GO TO 29.
NG >> GO TO 23.
23. CHECK “MAS A/F SE-B1”, “MAS A/F SE-B2”
Select “MAS A/F SE-B1”, “MAS A/F SE-B2” 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-152, "
ECM Re-communicating Function" .
3. Perform EC-76, "
VIN Registration" .
4. Perform EC-76, "
Exhaust Valve Timing Control Learning" .
5. Perform EC-77, "
Accelerator Pedal Released Position Learning" .
6. Perform EC-77, "
Throttle Valve Closed Position Learning" .
7. Perform EC-77, "
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.

EC-140
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Revision: 2006 November2007 350Z
27. CHECK “MAS A/F SE-B1”, “MAS A/F SE-B2”
Select “MAS A/F SE-B1”, “MAS A/F SE-B2” 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.

Disconnection, looseness, and cracks in air duct

Looseness of oil filler cap

Disconnection of oil level gauge

Open stuck, breakage, hose disconnection, or cracks of PCV valve

Disconnection or cracks of EVAP purge hose, open stuck of EVAP canister purge volume control solenoid
valve

Malfunctioning seal of rocker cover gasket

Disconnection, looseness, or cracks of hoses, such as vacuum hose, connecting to intake air system
parts

Malfunctioning seal of intake air system, etc.
>> GO TO 30.
29. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”, AND “B/FUEL SCHDL”
Select “A/F ALPHA-B1”, “A/F ALPHA-B2”, 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 >> Detect malfunctioning part according to EC-90, "
Symptom Matrix Chart" .
30. CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of "DATA MONITOR" mode, and then make sure that the indication is
within the SP value.
OK or NG
OK >>INSPECTION END
NG >> Detect malfunctioning part according to EC-90, "
Symptom Matrix Chart" .

EC-156
DTC P0011, P0021 IVT CONTROL
Revision: 2006 November2007 350Z
DTC P0011, P0021 IVT CONTROLPFP:23796
DescriptionNBS00045
SYSTEM DESCRIPTION
*: This signal is sent to the ECM through CAN Communication line
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant
temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing control solenoid
valve depending on driving status. This makes it possible 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 Value in Data Monitor ModeNBS00046
Specification data are reference values.
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Engine speed and piston position
Intake valve
timing controlIntake valve timing control
solenoid valve Camshaft position sensor (PHASE)
Engine coolant temperature sensor Engine coolant temperature
Wheel sensor Vehicle speed*
PBIB3535E
MONITOR ITEM CONDITION SPECIFICATION
INT/V TIM(B1)
INT/V TIM(B2)

Engine: After warming up

Shift lever: P or N (A/T),
Neutral (M/T)

Air conditioner switch: OFF

No loadIdle−5° - 5°CA
2,000 rpm Approx. 0° - 30°CA
INT/V SOL(B1)
INT/V SOL(B2)

Engine: After warming up

Shift lever: P or N (A/T),
Neutral (M/T)

Air conditioner switch: OFF

No loadIdle 0% - 2%
2,000 rpm Approx. 0% - 50%

DTC P0011, P0021 IVT CONTROL
EC-157
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On Board Diagnosis LogicNBS00047
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode.
DTC Confirmation ProcedureNBS00048
CAUTION:
Always drive at a safe speed.
NOTE:

If DTC P0011 or P0021 is displayed with DTC P0075 or P0081, first perform trouble diagnosis for
DTC P0075 or P0081. Refer to EC-183, "
DTC P0075, P0081 IVT CONTROL SOLENOID VALVE" .

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, confirm that battery voltage is between 10V and 16V 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. Check 1st trip DTC.
6. If 1st trip DTC is detected, go to EC-158, "
Diagnostic Procedure" .
If 1st trip DTC is not detected, go to next step.
7. Maintain the following conditions for at least 20 consecutive seconds.
8. Check 1st trip DTC.
9. If 1st trip DTC is detected, go to EC-158, "
Diagnostic Procedure" .
DTC No.Trouble diagnosis
nameDetecting condition Possible cause
P0011
0011
(Bank 1)
Intake valve timing
control performanceThere 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
intake valve timing control P0021
0021
(Bank 2)
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 SPEED 500 - 2,000 rpm (A constant rotation is maintained.)
COOLANT TEMP/S More than 60°C (140°F)
B/FUEL SCHDL More than 3.5 msec
Shift lever P or N (A/T), neutral (M/T) position
ENG SPEED 1,700 - 3,175 rpm (A constant rotation is maintained.)
COOLANT TEMP/S More than 70°C (158°F)
Shift lever 1st or 2nd position
Driving location uphillDriving vehicle uphill
(Increased engine load will help maintain the driving
conditions required for this test.)

EC-158
DTC P0011, P0021 IVT CONTROL
Revision: 2006 November2007 350Z
WITH GST
Follow the procedure “WITH CONSULT-III” above.
Diagnostic ProcedureNBS00049
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 LU-7, "
OIL PRESSURE CHECK" .
2. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to EC-159, "
Component Inspection" .
OK or NG
OK >> GO TO 3.
NG >> Replace malfunctioning intake valve timing control solenoid valve.
3. CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to EC-393, "
Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Replace crankshaft position sensor (POS).
4. CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to EC-405, "
Component Inspection" .
OK or NG
OK >> GO TO 5.
NG >> Replace malfunctioning camshaft position sensor (PHASE).
5. CHECK CAMSHAFT (INT)
Check the following.

Accumulation of debris to the signal plate of camshaft 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.
PBIA8559J
PBIB3533E

DTC P0011, P0021 IVT CONTROL
EC-159
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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-53, "TIMING CHAIN" .
No >> GO TO 7.
7. CHECK LUBRICATION CIRCUIT
Refer to EM-74, "
INSPECTION AFTER REMOVAL" .
OK or NG
OK >> GO TO 8.
NG >> Clean lubrication line.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-141, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
For Wiring Diagram, refer to EC-388
for crankshaft position sensor (POS) and EC-397 for camshaft position
sensor (PHASE).
>>INSPECTION END
Component InspectionNBS0004A
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 12V 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 12V 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 InstallationNBS0004B
INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to EM-53, "TIMING CHAIN" .
Terminal Resistance
1 and 2 7.0 - 7.5Ω [at 20°C (68°F)]
1 or 2 and ground∞ Ω
(Continuity should not exist.)
PBIB0193E
PBIB2275E

EC-160
DTC P0014 P0024 EVT CONTROL
Revision: 2006 November2007 350Z
DTC P0014 P0024 EVT CONTROLPFP:23795
DescriptionNBS0004C
SYSTEM DESCRIPTION
*: This signal is sent to the ECM through CAN Communication line
This mechanism magnetically controls cam phases continuously with the fixed operating angle of the exhaust
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant
temperature. Then, the ECM sends ON/OFF pulse duty signals to the exhaust valve timing control magnet
retarder depending on driving status. This makes it possible to control the shut/open timing of the exhaust
valve to increase engine torque and output in a range of high engine speed.
CONSULT-III Reference Value in Data Monitor ModeNBS0004D
Specification data are reference values.
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Engine speed and piston position
Exhaust valve
timing controlExhaust valve timing con-
trol magnet retarder Camshaft position sensor (PHASE)
Engine coolant temperature sensor Engine coolant temperature
Exhaust valve timing control position sensor Exhaust valve timing signal
Wheel sensor Vehicle speed*
PBIB2765E
MONITOR ITEM CONDITION SPECIFICATION
EXH/V TIM B1
EXH/V TIM B2

Engine: After warming up

Shift lever: Neutral

Air conditioner switch: OFF

No loadIdle−5° - 5°CA
Around 2,500 rpm while the engine
speed is risingApprox. 0° - 30°CA
EX VTC DTY B1
EX VTC DTY B2

Engine: After warming up

Shift lever: Neutral

Air conditioner switch: OFF

No loadIdle 0% - 2%
Around 2,500 rpm while the engine
speed is risingApprox. 0% - 70%

DTC P0014 P0024 EVT CONTROL
EC-161
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Revision: 2006 November2007 350Z
On Board Diagnosis LogicNBS0004E
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode.
DTC Confirmation ProcedureNBS0004F
CAUTION:
Always drive at a safe speed.
NOTE:

If DTC P0014 or P0024 is displayed with DTC P0078, P0084, P1078 or P1084, first perform trouble
diagnosis for DTC P0078, P0084 or P1078, P1084. Refer to EC-190, "
DTC P0078 P0084 EVT CON-
TROL MAGNET RETARDER" or EC-528, "DTC P1078 P1084 EVT CONTROL POSITION SENSOR" .

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, confirm that battery voltage is between 10V and 16V 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. Check 1st trip DTC.
6. If 1st trip DTC is detected, go to EC-162, "
Diagnostic Procedure" .
If 1st trip DTC is not detected, go to next step.
7. Maintain the following conditions for at least 20 consecutive seconds.
DTC No.Trouble diagnosis
nameDetecting condition Possible cause
P0014
0014
(Bank 1)
Exhaust valve timing
control performanceThere is a gap between angle of target and
phase-control angle degree.

Crankshaft position sensor (POS)

Camshaft position sensor (PHASE)

Exhaust valve timing control position sensor

Exhaust valve timing control magnet retarder

Accumulation of debris to the signal pick-up
portion of the camshaft

Timing chain installation

Exhaust valve timing control pulley assembly P0024
0024
(Bank 2)
Detected items Engine operating condition in fail-safe mode
Exhaust valve timing controlThe signal is not energized to the Exhaust valve timing control magnet retarder and the mag-
net retarder control does not function.
ENG SPEED 500 - 2,000 rpm (A constant rotation is maintained.)
COOLAN TEMP/S More than 60°C (140°F)
B/FUEL SCHDL More than 3.5 msec
Shift lever P or N (A/T), neutral (M/T) position
ENG SPEED 1,700 - 2,950 rpm (A constant rotation is maintained.)
COOLAN TEMP/S More than 70°C (158°F)
Shift lever 1st or 2nd position
Driving location uphillDriving vehicle uphill
(Increased engine load will help maintain the driving
conditions required for this test.)

DTC P0014 P0024 EVT CONTROL
EC-163
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6. CHECK EXHAUST VALVE TIMING CONTROL POSITION SENSOR
Refer to EC-539, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace malfunctioning exhaust valve timing control position sensor.
7. CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to EC-393, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace crankshaft position sensor (POS).
8. CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to EC-405, "
Component Inspection" .
OK or NG
OK >> GO TO 9.
NG >> Replace malfunctioning camshaft position sensor (PHASE).
9. CHECK CAMSHAFT (EXH)
Check the following.

Accumulation of debris to the signal plate of camshaft rear end

Chipping signal plate of camshaft rear end
OK or NG
OK >> GO TO 10.
NG >> Remove debris and clean the signal plate of camshaft
rear end or malfunctioning replace camshaft.
10. 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-53, "TIMING CHAIN" .
No >> GO TO 11.
11 . REPLACE EXHAUST VALVE TIMING CONTROL PULLEY ASSEMBLY
1. Replace exhaust valve timing control pulley assembly and exhaust valve timing control magnet retarder.
Refer to EM-72, "
CAMSHAFT" and EM-44, "FRONT TIMING CHAIN CASE" .
2. Perform EC-76, "
Exhaust Valve Timing Control Learning" .
>>INSPECTION END
PBIB3534E

EC-164
DTC P0014 P0024 EVT CONTROL
Revision: 2006 November2007 350Z
12. CHECK INTERMITTENT INCIDENT
Refer to EC-141, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
For Wiring Diagram, refer to EC-388
for crankshaft position sensor (POS) and EC-397 for camshaft position
sensor (PHASE).
>>INSPECTION END
Component InspectionNBS0004H
EXHAUST VALVE TIMING CONTROL MAGNET RETARDER
1. Disconnect exhaust valve timing control magnet retarder harness connector.
2. Check resistance between exhaust valve timing control magnet
retarder terminals 1 and 2.
3. If NG, replace exhaust valve timing control magnet retarder and
go to the next step.
4. Perform EC-76, "
Exhaust Valve Timing Control Learning" .
Removal and InstallationNBS0004I
EXHAUST VALVE TIMING CONTROL MAGNET RETARDER
Refer to EM-44, "FRONT TIMING CHAIN CASE" . Resistance: 9.0 - 11.0Ω [at 20°C (68°F)]
PBIB3469E