battery location NISSAN 350Z 2007 Z33 Engine Control Workshop Manual

EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
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SECTION EC
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Revision: 2006 November2007 350Z
ENGINE CONTROL SYSTEM
INDEX FOR DTC ........................................................ 8
DTC No. Index ......................................................... 8
Alphabetical Index .................................................. 13
PRECAUTIONS ........................................................ 18
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................ 18
Precautions for Battery Service .............................. 18
Precautions for Procedures without Cowl Top Cover ... 18
On Board Diagnostic (OBD) System of Engine and
A/T .......................................................................... 18
Precaution .............................................................. 19
PREPARATION ......................................................... 22
Special Service Tools ............................................. 22
Commercial Service Tools ...................................... 23
ENGINE CONTROL SYSTEM .................................. 24
System Diagram ..................................................... 24
Multiport Fuel Injection (MFI) System .................... 25
Electronic Ignition (EI) System ............................... 27
Fuel Cut Control (at No Load and High Engine
Speed) .................................................................... 28
AIR CONDITIONING CUT CONTROL ..................... 29
Input/Output Signal Chart ....................................... 29
System Description ................................................ 29
AUTOMATIC SPEED CONTROL DEVICE (ASCD) ... 30
System Description ................................................ 30
Component Description .......................................... 31
CAN COMMUNICATION .......................................... 32
System Description ................................................ 32
EVAPORATIVE EMISSION SYSTEM ....................... 33
Description ............................................................. 33
Component Inspection ........................................... 36
Removal and Installation ........................................ 37
How to Detect Fuel Vapor Leakage ....................... 37
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ...................................................................... 39
System Description ................................................ 39
Diagnostic Procedure ............................................. 40
Component Inspection ........................................... 42
POSITIVE CRANKCASE VENTILATION ................. 44Description .............................................................. 44
Component Inspection ............................................ 45
NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-
NATS) ........................................................................ 46
Description .............................................................. 46
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 47
Introduction ............................................................. 47
Two Trip Detection Logic ........................................ 47
Emission-related Diagnostic Information ................ 48
Malfunction Indicator Lamp (MIL) ........................... 62
OBD System Operation Chart ................................ 65
BASIC SERVICE PROCEDURE ............................... 71
Basic Inspection ..................................................... 71
Idle Speed and Ignition Timing Check .................... 76
Procedure After Replacing ECM ............................ 76
VIN Registration ..................................................... 76
Exhaust Valve Timing Control Learning .................. 76
Accelerator Pedal Released Position Learning ...... 77
Throttle Valve Closed Position Learning ................. 77
Idle Air Volume Learning ........................................ 77
Fuel Pressure Check .............................................. 79
TROUBLE DIAGNOSIS ............................................ 81
Trouble Diagnosis Introduction ............................... 81
DTC Inspection Priority Chart ................................. 87
Fail-safe Chart ........................................................ 89
Symptom Matrix Chart ............................................ 90
Engine Control Component Parts Location ............ 94
Vacuum Hose Drawing .........................................100
Circuit Diagram .....................................................101
ECM Harness Connector Terminal Layout ...........103
ECM Terminals and Reference Value ...................103
CONSULT-III Function (ENGINE) .........................116
Generic Scan Tool (GST) Function .......................125
CONSULT-III Reference Value in Data Monitor ....127
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .132
Description ............................................................132
Testing Condition ..................................................132
Inspection Procedure ............................................132
Diagnostic Procedure ...........................................133
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-

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.)

DTC P0014 P0024 EVT CONTROL
EC-161
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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 P0456 EVAP CONTROL SYSTEM
EC-483
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CAUTION:

Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used,
the MIL may come on.

If the fuel filler cap is not tightened properly, the MIL may come on.

Use only a genuine NISSAN rubber tube as a replacement.
DTC Confirmation ProcedureNBS0009Z
NOTE:

If DTC P0456 is displayed with P0442, first perform trouble diagnosis for DTC P0456.

After repair, make sure that the hoses and clips are installed properly.

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:

Open engine hood before conducting following procedure.

If any of following conditions are met just before the DTC confirmation procedure, leave the vehi-
cle for more than 1 hour.
–Fuel filler cap is removed.
–Refilled or drained the fuel.
–EVAP component parts is/are removed.

Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.
2. Make sure the following conditions are met.
FUEL LEVEL SE: 0.25 - 1.4V
COOLAN TEMP/S: 0 - 32°C (32 - 90°F)
FUEL T/TMP SE: 0 - 35°C (32 - 95°F)
INT/A TEMP SE: More than 0°C (32°F)
If NG, turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle) or refilling/draining
fuel until the output voltage condition of the “FUEL LEVEL SE” meets within the range above and leave
the vehicle for more than 1 hour. Then start from step 1).
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. Select “EVAP V/S LEAK P0456/P1456” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode
with CONSULT-III.
Follow the instruction displayed.
6. Make sure that “OK” is displayed.
If “NG” is displayed, refer to EC-484, "
Diagnostic Procedure" .
NOTE:

If the engine speed cannot be maintained within the range displayed on CONSULT-III screen, go
to EC-71, "
Basic Inspection" .

Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid
valve properly.
Overall Function CheckNBS000A0
WITH GST
Use this procedure to check the overall function of the EVAP very small leak function. During this check, a 1st
trip DTC might not be confirmed.
CAUTION:

Never use compressed air, doing so may damage the EVAP system.

Do not start engine.

Do not exceeded 4.12 kPa (0.042 kg/cm2 , 0.6 psi).
1. Attach the EVAP service port adapter securely to the EVAP service port. For the location of EVAP service
port, refer to EC-34, "
EVAPORATIVE EMISSION LINE DRAWING" .

EC-498
DTC P0506 ISC SYSTEM
Revision: 2006 November2007 350Z
DTC P0506 ISC SYSTEMPFP:23781
DescriptionNBS000AM
NOTE:
If DTC P0506 is displayed with other DTC, first perform the trouble diagnosis for the other DTC.
The ECM controls the engine idle speed to a specified level through the fine adjustment of the air, which is let
into the intake manifold, by operating the electric throttle control actuator. The operating of the throttle valve is
varied to allow for optimum control of the engine idling speed. The crankshaft position sensor (POS) detects
the actual engine speed and sends a signal to the ECM.
The ECM controls the electric throttle control actuator so that the engine speed coincides with the target value
memorized in the ECM. The target engine speed is the lowest speed at which the engine can operate steadily.
The optimum value stored in the ECM is determined by taking into consideration various engine conditions,
such as during warming up, deceleration, and engine load (air conditioner, power steering and cooling fan
operation, etc.).
On Board Diagnosis LogicNBS000AN
DTC Confirmation ProcedureNBS000AO
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.

If the target idle speed is out of the specified value, perform EC-77, "Idle Air Volume Learning" ,
before conducting DTC Confirmation Procedure. For the target idle speed, refer to EC-718, "
SER-
VICE DATA AND SPECIFICATIONS (SDS)" .
TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 11V at idle.

Always perform the test at a temperature above −10°C (14°F).
WITH CONSULT-III
1. Open engine hood.
2. Start engine and warm it up to normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Restart engine and run it for at least 1 minute at idle speed.
5. Check 1st trip DTC.
6. If 1st trip DTC is detected, go to EC-498, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III” above.
Diagnostic ProcedureNBS000AP
1. CHECK INTAKE AIR LEAK
1. Start engine and let it idle.
2. Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK >> GO TO 2.
NG >> Discover air leak location and repair.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0506
0506Idle speed control sys-
tem RPM lower than
expectedThe idle speed is less than the target idle
speed by 100 rpm or more.

Electric throttle control actuator

Intake air leak