Nissan 350Z Workshop Manual 2003 (13) PDF

EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
C
D
E
F
G
H
I
J
K
L
M
SECTION
A
EC
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 .............................................. 30
BASIC SERVICE PROCEDURE .............................. 39
Idle Speed and Ignition Timing Check .................... 39
Idle Speed/Ignition Timing/Idle Mixture Ratio
Adjustment ............................................................. 40
Accelerator Pedal Released Position Learning ...... 50
Throttle Valve Closed Position Learning ................ 51
Idle Air Volume Learning ........................................ 51
Fuel Pressure Check .............................................. 53
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 55
Introduction ............................................................ 55
Two Trip Detection Logic ........................................ 55
Emission-related Diagnostic Information ................ 56
NVIS (Nissan Vehicle Immobilizer System ? NATS)
... 71
Malfunction Indicator Lamp (MIL) ...........................71
OBD System Operation Chart ................................75
TROUBLE DIAGNOSIS ............................................ 80
Trouble Diagnosis Introduction ...............................80
DTC Inspection Priority Chart .................................83
Fail-safe Chart ........................................................85
Basic Inspection .....................................................86
Symptom Matrix Chart ............................................91
Engine Control Component Parts Location ............95
Circuit Diagram .....................................................101
ECM Harness Connector Terminal Layout ...........103
ECM Terminals and Reference Value ...................103
CONSULT-II Function ...........................................112
Generic Scan Tool (GST) Function .......................125
CONSULT-II Reference Value in Data Monitor .....127
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................131
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .133
Description ............................................................133
Testing Condition ..................................................133
Inspection Procedure ............................................133
Diagnostic Procedure ...........................................134
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT .......................................................................137
Description ............................................................137
Diagnostic Procedure ...........................................137
POWER SUPPLY CIRCUIT FOR ECM ...................138
Wiring Diagram .....................................................138
Diagnostic Procedure ...........................................141
DTC U1000, U1001 CAN COMMUNICATION LINE .146
Description ............................................................146
On Board Diagnosis Logic ....................................146
DTC Confirmation Procedure ...............................146
Wiring Diagram .....................................................147
Diagnostic Procedure ...........................................148
DTC P0011, P0021 IVT CONTROL ........................149
Description ............................................................149
CONSULT-II Reference Value in Data Monitor Mode
.149
On Board Diagnosis Logic ....................................150