service NISSAN 350Z 2007 Z33 Engine Control Owner's Manual

BASIC SERVICE PROCEDURE
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16. CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to EM-53, "
TIMING CHAIN" .
OK or NG
OK >> GO TO 17.
NG >> 1. Repair the timing chain installation.
2. GO TO 4.
17. DETECT MALFUNCTIONING PART
Check the following.

Check camshaft position sensor (PHASE) and circuit.
Refer to EC-394, "
DTC P0340, P0345 CMP SENSOR (PHASE)" .

Check crankshaft position sensor (POS) and circuit.
Refer to EC-386, "
DTC P0335 CKP SENSOR (POS)" .
OK or NG
OK >> GO TO 18.
NG >> 1. Repair or replace.
2. GO TO 4.
18. CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2. Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs.
Refer to BL-150, "
NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)" .
>> GO TO 4.
19. INSPECTION END
Did you replace the ECM, referring this Basic Inspection procedure?
Ye s o r N o
Ye s > > 1 . P e r f o r m EC-76, "VIN Registration"
2. Perform EC-76, "Exhaust Valve Timing Control Learning" .
3.INSPECTION END
No >>INSPECTION END

EC-76
BASIC SERVICE PROCEDURE
Revision: 2006 November2007 350Z
Idle Speed and Ignition Timing CheckNBS00035
IDLE SPEED
With CONSULT-III
Check idle speed in “DATA MONITOR” mode with CONSULT-III.
With GST
Check idle speed in Service $01 with GST.
IGNITION TIMING
1. Attach timing light to loop wire as shown.
2. Check ignition timing.
Procedure After Replacing ECMNBS006SZ
When replacing ECM, the following procedure must be performed.
1. Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to
BL-152, "
ECM Re-communicating Function" .
2. Perform EC-76, "
VIN Registration" .
3. Perform EC-76, "
Exhaust Valve Timing Control Learning" .
4. Perform EC-77, "
Accelerator Pedal Released Position Learning" .
5. Perform EC-77, "
Throttle Valve Closed Position Learning" .
6. Perform EC-77, "
Idle Air Volume Learning" .
VIN RegistrationNBS00037
DESCRIPTION
VIN Registration is an operation to registering VIN in ECM. It must be performed each time ECM is replaced.
NOTE:
Accurate VIN which is registered in ECM may be required for Inspection & Maintenance (I/M).
OPERATION PROCEDURE
With CONSULT-III
1. Check the VIN of the vehicle and note it. Refer to GI-46, "IDENTIFICATION INFORMATION" .
2. Turn ignition switch ON and engine stopped.
3. Select “VIN REGISTRATION” in “WORK SUPPORT” mode.
4. Follow the instruction of CONSULT-III display.
Exhaust Valve Timing Control LearningNBS00038
DESCRIPTION
Exhaust Valve Timing Control Learning is an operation to learn the characteristic of exhaust valve timing con-
trol magnet retarder by comparing the target angle of exhaust camshaft with the actual retarded angle of
exhaust camshaft. It must be performed each time exhaust valve timing control magnet retarder is discon-
nected or replaced, or ECM is replaced.
1. Loop wire
A. Timing light B. Timing indicator
PBIB3526E

BASIC SERVICE PROCEDURE
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OPERATION PROCEDURE
With CONSULT-III
1. Start engine and warm it up to normal operation temperature.
2. Set shift lever in neutral position and confirm that following electrical or mechanical loads are not applied.
–Headlamp switch is OFF
–Air conditioner switch is OFF
–Rear defogger switch is OFF
–Steering wheel is in the straight-ahead position, etc
3. Keep the engine speed between 1,800 and 2,000 rpm.
4. Select “EXH V/T CONTROL LEARN” in “WORK SUPPORT” mode with CONSULT-III.
5. Touch “START” and wait 20 seconds.
6. Make sure that “CMPLT” is displayed on CONSULT-III screen.
Without CONSULT-III
1. Start engine and warm it up to normal operation temperature.
2. Set shift lever in neutral position and confirm that following electrical or mechanical loads are not applied.
–Headlamp switch is OFF
–Air conditioner switch is OFF
–Rear defogger switch is OFF
–Steering wheel is in the straight-ahead position, etc
3. Keep the engine speed between 1,800 and 2,000 rpm at 20 seconds.
Accelerator Pedal Released Position LearningNBS00039
DESCRIPTION
Accelerator Pedal Released Position Learning is an operation to learn the fully released position of the accel-
erator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each time
harness connector of accelerator pedal position sensor or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON and wait at least 2 seconds.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON and wait at least 2 seconds.
5. Turn ignition switch OFF and wait at least 10 seconds.
Throttle Valve Closed Position LearningNBS0003A
DESCRIPTION
Throttle Valve Closed Position Learning is an operation to learn the fully closed position of the throttle valve by
monitoring the throttle position sensor output signal. It must be performed each time harness connector of
electric throttle control actuator or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
Idle Air Volume LearningNBS0003B
DESCRIPTION
Idle Air Volume Learning is an operation to learn the idle air volume that keeps each engine within the specific
range. It must be performed under any of the following conditions:

Each time electric throttle control actuator or ECM is replaced.
Learning completed : CMPLT
Learning not yet : YET

EC-78
BASIC SERVICE PROCEDURE
Revision: 2006 November2007 350Z

Idle speed or ignition timing is out of specification.
PREPARATION
Before performing Idle Air Volume Learning, make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.

Battery voltage: More than 12.9V (At idle)

Engine coolant temperature: 70 - 100°C (158 - 212°F)

Park/neutral position (PNP) switch: ON

Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, if the parking brake is applied before the engine
is started, the headlamp will not be illuminated.

Steering wheel: Neutral (Straight-ahead position)

Vehicle speed: Stopped

Transmission: Warmed-up
–For A/T models with CONSULT-III
 Drive vehicle until “ATF TEMP SE 1” in “DATA MONITOR” mode of “A/T” system indicates less than 0.9V.
–For A/T models without CONSULT-III and M/T models
 Drive vehicle for 10 minutes.
OPERATION PROCEDURE
With CONSULT-III
1. Perform EC-77, "Accelerator Pedal Released Position Learning" .
2. Perform EC-77, "
Throttle Valve Closed Position Learning" .
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.
5. Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode.
6. Touch “START” and wait 20 seconds.
7. Make sure that “CMPLT” is displayed on CONSULT-III screen. If “CMPLT” is not displayed, Idle Air Vol-
ume Learning will not be carried out successfully. In this case, find the cause of the incident by referring to
the DIAGNOSIS PROCEDURE below.
8. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the
specifications.
Without CONSULT-III
NOTE:

It is better to count the time accurately with a clock.

It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit
has a malfunction.
1. Perform EC-77, "
Accelerator Pedal Released Position Learning" .
2. Perform EC-77, "
Throttle Valve Closed Position Learning" .
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
7. Repeat the following procedure quickly five times within 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully release the accelerator pedal.
ITEM SPECIFICATION
Idle speed A/T: 650 ± 50 rpm (in P or N position)
M/T: 650 ± 50 rpm (in Neutral position)
Ignition timing A/T: 15 ± 5° BTDC (in P or N position)
M/T: 15 ± 5° BTDC (in Neutral position)

BASIC SERVICE PROCEDURE
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8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MIL stops
blinking and turned ON.
9. Fully release the accelerator pedal within 3 seconds after the MIL turned ON.
10. Start engine and let it idle.
11. Wait 20 seconds.
12. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the
specifications.
13. If idle speed and ignition timing are not within the specification, Idle Air Volume Learning will not be carried
out successfully. In this case, find the cause of the incident by referring to the DIAGNOSTIC PROCE-
DURE below.
DIAGNOSTIC PROCEDURE
If Idle Air Volume Learning cannot be performed successfully, proceed as follows:
1.Check that throttle valve is fully closed.
2.Check PCV valve operation.
3.Check that downstream of throttle valve is free from air leakage.
4.When the above three items check out OK, engine component parts and their installation condi-
tion are questionable. Check and eliminate the cause of the incident.
It is useful to perform EC-132, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
5.If any of the following conditions occur after the engine has started, eliminate the cause of the
incident and perform Idle Air Volume Learning all over again:

Engine stalls.

Erroneous idle.
Fuel Pressure CheckNBS0003C
FUEL PRESSURE RELEASE
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT” mode with CONSULT-III.
3. Start engine.
4. After engine stalls, crank it two or three times to release all fuel pressure.
5. Turn ignition switch OFF.
ITEM SPECIFICATION
Idle speed A/T: 650 ± 50 rpm (in P or N position)
M/T: 650 ± 50 rpm (in Neutral position)
Ignition timing A/T: 15 ± 5° BTDC (in P or N position)
M/T: 15 ± 5° BTDC (in Neutral position)
SEC897C

EC-80
BASIC SERVICE PROCEDURE
Revision: 2006 November2007 350Z
Without CONSULT-III
1. Remove fuel pump fuse (1) located in IPDM E/R (2).
2. Start engine.
3. After engine stalls, crank it two or three times to release all fuel
pressure.
4. Turn ignition switch OFF.
5. Reinstall fuel pump fuse after servicing fuel system.
FUEL PRESSURE CHECK
CAUTION:
Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
NOTE:
Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel pres-
sure cannot be completely released because Z33 models do not have fuel return system.
Use Fuel Pressure Gauge Kit (J-44321) to check fuel pressure.
1. Release fuel pressure to zero. Refer to EC-79, "
FUEL PRESSURE RELEASE" .
2. Install the inline fuel quick disconnected fitting (A) between fuel
damper (1) and fuel injector tube.
3. Connect the fuel pressure gauge (quick connector adapter
hose) (B) to the inline fuel quick disconnected fitting.
4. Turn ignition switch ON and check for fuel leakage.
5. Start engine and check for fuel leakage.
6. Read the indication of fuel pressure gauge.
7. If result is unsatisfactory, go to next step.
8. Check fuel hoses and fuel tubes for clogging.
If OK, replace “fuel filter and fuel pump assembly”.
If NG, repair or replace.
PBIB2206E
At idling:
Approximately 350 kPa (3.57 kg/cm2 , 51 psi)
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TROUBLE DIAGNOSIS
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Detailed Flow
1. GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurred) using the EC-85, "
DIAGNOSTIC WORKSHEET" .
>> GO TO 2.
2. CHECK DTC*1
1. Check DTC*1 .
2. Perform the following procedure if DTC*
1 is displayed.
–Record DTC*1 and freeze frame data*2 . (Print them out with CONSULT-III or GST.)
–Erase DTC*1 . (Refer to EC-61, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION"
.)
–Study the relationship between the cause detected by DTC*1 and the symptom described by the cus-
tomer. (Symptom Matrix Chart is useful. Refer to EC-90, "
Symptom Matrix Chart" .)
3. Check related service bulletins for information.
Is any symptom described and any DTC detected?
Symptom is described, DTC*1 is displayed>>GO TO 3.
Symptom is described, DTC*
1 is not displayed>>GO TO 4.
Symptom is not described, DTC*
1 is displayed>>GO TO 5.
3. CONFIRM THE SYMPTOM
Try to confirm the symptom described by the customer (except MIL ON).
DIAGNOSIS WORK SHEET is useful to verify the incident.
Connect CONSULT-III to the vehicle and check diagnosis results.
Verify relation between the symptom and the condition when the symptom is detected.
>> GO TO 5.
4. CONFIRM THE SYMPTOM
Try to confirm the symptom described by the customer.
DIAGNOSIS WORK SHEET is useful to verify the incident.
Connect CONSULT-III to the vehicle and check diagnosis results.
Verify relation between the symptom and the condition when the symptom is detected.
>> GO TO 6.

EC-84
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
5. PERFORM DTC CONFIRMATION PROCEDURE
Perform DTC Confirmation Procedure for the displayed DTC*
1 , and then make sure that DTC*1 is detected
again.
If two or more DTCs*
1 are detected, refer to EC-87, "DTC Inspection Priority Chart" and determine trouble
diagnosis order.
NOTE:

Freeze frame data*2 is useful if the DTC*1 is not detected.

Perform Overall Function Check if DTC Confirmation Procedure is not included on Service Manual. This
simplified check procedure is an effective alternative though DTC*
1 cannot be detected during this check.
If the result of Overall Function Check is NG, it is the same as the detection of DTC*
1 by DTC Confirma-
tion Procedure.
Is DTC*
1 detected?
Yes >> GO TO 10.
No >> Check according to EC-141, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
6. PERFORM BASIC INSPECTION
Perform EC-71, "
Basic Inspection" .
With CONSULT-III>>GO TO 7.
Without CONSULT-III>>GO TO 9.
7. PERFORM SPEC IN DATA MONITOR MODE
With CONSULT-III
Make sure that “MAS A/F SE-B1”, “MAS A/F SE-B2”, “B/FUEL SCHDL”, and “A/F ALPHA-B1”, “A/F ALPHA-
B2” are within the SP value using CONSULT-III “SPEC” in "DATA MONITOR" mode.
Refer to EC-133, "
Diagnostic Procedure" .
Are they within the SP value?
Yes >> GO TO 9.
No >> GO TO 8.
8. DETECT MALFUNCTIONING PART BY TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Detect malfunctioning part according to EC-132, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
Is malfunctioning part detected?
Yes >> GO TO 11.
No >> GO TO 9.
9. DETECT MALFUNCTIONING SYSTEM BY SYMPTOM MATRIX CHART
Detect malfunctioning system according to EC-90, "
Symptom Matrix Chart" based on the confirmed symptom
in step 4, and determine the trouble diagnosis order based on possible causes and symptom.
>> GO TO 10.

EC-94
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
Engine Control Component Parts LocationNBS0003I
1. IPDM E/R 2. Mass air flow sensor (with intake air
temperature sensor) (bank 1)3. Refrigerant pressure sensor
4. Cooling fan motor-2 5. Intake valve timing control solenoid
valve6. Exhaust valve timing control magnet
retarder
7. Cooling fan motor-1 8. Mass air flow sensor (with intake air
temperature sensor) (bank 2)9. Ignition coil (with power transistor)
and spark plug (bank 2)
10. Electric throttle control actuator
(bank 2)11. A/F sensor 1 (bank 2) 12. Exhaust valve timing control position
sensor
13. Camshaft position sensor (PHASE) 14. Fuel injector (bank 2) 15. Engine coolant temperature sensor
16. Knock sensor 17. EVAP canister purge volume con-
trol solenoid valve18. Fuel injector (bank 1)
19. Ignition coil (with power transistor)
and spark plug (bank 1)20. EVAP service port 21. A/F sensor 1 (bank 1)
22. Crankshaft position sensor (POS) 23. Electric throttle control actuator
(bank 1)
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TROUBLE DIAGNOSIS
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1. Refrigerant pressure sensor har-
ness connector2. IPDM E/R
1. Power steering pressure sensor 2. Alternator 3. Engine oil temperature sensor
:Vehicle front
1. EVAP service port 2. EVAP canister purge volume con-
trol solenoid valve3. EVAP canister vent control valve
4. EVAP control system pressure sen-
sor5. EVAP canister
:Vehicle front
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PBIB3522E
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