Nissan Maxima Workshop Manual 2003 (6) PDF

ENGINE CONTROL SYSTEM
SECTION
EC
CONTENTS
TROUBLE DIAGNOSIS - INDEX ....................................9
Alphabetical Index .......................................................9
DTC No. Index...........................................................13
PRECAUTIONS .............................................................18
Supplemental Restraint System (SRS) ?AIR
BAG? and ?SEAT BELT PRE-TENSIONER?.............18
Precautions for On Board Diagnostic (OBD)
System of Engine and A/T.........................................18
Engine Fuel & Emission Control System..................19
Precautions................................................................20
Wiring Diagrams and Trouble Diagnosis...................21
PREPARATION .............................................................22
Special Service Tools ................................................22
Commercial Service Tools.........................................22
ENGINE AND EMISSION CONTROL OVERALL
SYSTEM.........................................................................24
Engine Control Component Parts Location...............24
Circuit Diagram..........................................................28
System Diagram........................................................30
Vacuum Hose Drawing..............................................31
System Chart.............................................................32
ENGINE AND EMISSION BASIC CONTROL
SYSTEM DESCRIPTION...............................................33
Multiport Fuel Injection (MFI) System .......................33
Electronic Ignition (EI) System..................................35
Air Conditioning Cut Control......................................36
Fuel Cut Control (at no load & high engine
speed)........................................................................37
Evaporative Emission System...................................37
On Board Refueling Vapor Recovery (ORVR)..........43
Positive Crankcase Ventilation..................................52
CAN Communication.................................................53
Automatic Speed Control Device (ASCD) System....54
BASIC SERVICE PROCEDURE...................................56
Fuel Pressure Release..............................................56
Fuel Pressure Check.................................................56
Injector.......................................................................57
How to Check Idle Speed and Ignition Timing..........58
Idle Speed/Ignition Timing/Idle Mixture Ratio
Adjustment.................................................................59
Accelerator Pedal Released Position Learning.........72
Throttle Valve Closed Position Learning...................72
Idle Air Volume Learning ...........................................72
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION...............................................................76
Introduction................................................................76
Two Trip Detection Logic...........................................76
Emission-related Diagnostic Information...................77
Malfunction Indicator Lamp (MIL)..............................92
OBD System Operation Chart...................................96
CONSULT-II.............................................................101
Generic Scan Tool (GST) ........................................116
TROUBLE DIAGNOSIS - INTRODUCTION................118
Introduction..............................................................118
Work Flow................................................................120
TROUBLE DIAGNOSIS - BASIC INSPECTION.........122
Basic Inspection.......................................................122
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION.............................................................128
DTC Inspection Priority Chart..................................128
Fail-safe Chart.........................................................129
Symptom Matrix Chart.............................................130
CONSULT-II Reference Value in Data Monitor
Mode........................................................................134
Major Sensor Reference Graph in Data Monitor
Mode........................................................................137
ECM Terminals and Reference Value .....................140
TROUBLE DIAGNOSIS - SPECIFICATION VALUE ..151
Description...............................................................151
Testing Condition.....................................................151
Inspection Procedure...............................................151
Diagnostic Procedure ..............................................152
TROUBLE DIAGNOSIS FOR INTERMITTENT
INCIDENT.....................................................................155
Description...............................................................155
Diagnostic Procedure ..............................................155
TROUBLE DIAGNOSIS FOR POWER SUPPLY........156
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX