Infiniti I35 (A33). Manual - part 165
ENGINE CONTROL SYSTEM
CONTENTS
TROUBLE DIAGNOSIS - INDEX ....................................9
Alphabetical Index .......................................................9
DTC No. Index...........................................................13
PRECAUTIONS .............................................................18
Precautions for Supplemental Restraint System
(SRS)
....................................................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 ...................................55
Fuel Pressure Release ..............................................55
Fuel Pressure Check .................................................55
Injector .......................................................................56
How to Check Idle Speed and Ignition Timing..........57
Idle Speed/Ignition Timing/Idle Mixture Ratio
Adjustment .................................................................58
Accelerator Pedal Released Position Learning.........70
Throttle Valve Closed Position Learning ...................70
Idle Air Volume Learning ...........................................70
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION ...............................................................74
Introduction ................................................................74
Two Trip Detection Logic ...........................................74
Emission-related Diagnostic Information ...................75
Malfunction Indicator Lamp (MIL)..............................90
OBD System Operation Chart ...................................94
CONSULT-II ...............................................................99
Generic Scan Tool (GST) ........................................ 114
TROUBLE DIAGNOSIS - INTRODUCTION................ 116
Introduction .............................................................. 116
Work Flow................................................................ 118
TROUBLE DIAGNOSIS - BASIC INSPECTION .........120
Basic Inspection.......................................................120
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION .............................................................125
DTC Inspection Priority Chart..................................125
Fail-safe Chart .........................................................126
Symptom Matrix Chart.............................................127
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................131
Major Sensor Reference Graph in Data Monitor
Mode ........................................................................134
ECM Terminals and Reference Value .....................137
TROUBLE DIAGNOSIS - SPECIFICATION VALUE ..148
Description ...............................................................148
Testing Condition .....................................................148
Inspection Procedure...............................................148
Diagnostic Procedure ..............................................149
Description ...............................................................152
Diagnostic Procedure ..............................................152
POWER SUPPLY AND GROUND CIRCUIT ..............153
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