Nissan 350Z Workshop Maunual 2004 (13) PDF

EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
C
D
E
F
G
H
I
J
K
L
M
SECTION EC
A
EC
Revision: 2004 December 2004.5 350Z
ENGINE CONTROL SYSTEM
INDEX FOR DTC ........................................................ 8
Alphabetical Index .................................................... 8
DTC No. Index ....................................................... 12
PRECAUTIONS ........................................................ 16
Precautions for Supplemental Restraint System
(SRS) ?AIR BAG? and ?SEAT BELT PRE-TEN-
SIONER? ................................................................ 16
Precautions for Battery Service .............................. 16
On Board Diagnostic (OBD) System of Engine and
A/T .......................................................................... 16
Precaution .............................................................. 17
Wiring Diagrams and Trouble Diagnosis ................ 19
PREPARATION ......................................................... 20
Special Service Tools ............................................. 20
Commercial Service Tools ...................................... 21
ENGINE CONTROL SYSTEM .................................. 22
System Diagram ..................................................... 22
Vacuum Hose Drawing ........................................... 23
System Chart ......................................................... 24
Multiport Fuel Injection (MFI) System .................... 25
Electronic Ignition (EI) System ............................... 27
Air Conditioning Cut Control ................................... 28
Fuel Cut Control (at No Load and High Engine
Speed) .................................................................... 28
CAN communication .............................................. 29
BASIC SERVICE PROCEDURE .............................. 30
Idle Speed and Ignition Timing Check .................... 30
Idle Speed/Ignition Timing/Idle Mixture Ratio
Adjustment ............................................................. 31
VIN Registration ..................................................... 42
Accelerator Pedal Released Position Learning ...... 42
Throttle Valve Closed Position Learning ................ 42
Idle Air Volume Learning ........................................ 43
Fuel Pressure Check .............................................. 45
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 47
Introduction ............................................................ 47
Two Trip Detection Logic ........................................ 47
Emission-related Diagnostic Information ................ 48
NVIS (Nissan Vehicle Immobilizer System ? NATS)
... 63
Malfunction Indicator Lamp (MIL) ...........................63
OBD System Operation Chart ................................66
TROUBLE DIAGNOSIS ............................................ 72
Trouble Diagnosis Introduction ...............................72
DTC Inspection Priority Chart ................................. 75
Fail-safe Chart ........................................................77
Basic Inspection .....................................................78
Symptom Matrix Chart ............................................83
Engine Control Component Parts Location ............87
Circuit Diagram ....................................................... 93
ECM Harness Connector Terminal Layout .............95
ECM Terminals and Reference Value ..................... 95
CONSULT-II Function (ENGINE) ..........................103
Generic Scan Tool (GST) Function .......................116
CONSULT-II Reference Value in Data Monitor .....119
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................123
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .125
Description ............................................................125
Testing Condition ..................................................125
Inspection Procedure ............................................125
Diagnostic Procedure ...........................................126
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT .......................................................................129
Description ............................................................129
Diagnostic Procedure ...........................................129
POWER SUPPLY AND GROUND CIRCUIT ...........130
Wiring Diagram .....................................................130
Diagnostic Procedure ...........................................133
Ground Inspection ................................................138
DTC U1000, U1001 CAN COMMUNICATION LINE .139
Description ............................................................139
On Board Diagnosis Logic ....................................139
DTC Confirmation Procedure ...............................139
Wiring Diagram .....................................................140
Diagnostic Procedure ...........................................141
DTC P0011, P0021 IVT CONTROL ........................142
Description ............................................................142
CONSULT-II Reference Value in Data Monitor Mode
.142