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EC-6
EVAPORATIVE EMISSION SYSTEM .....................525
Description ............................................................525
Component Inspection ..........................................528
POSITIVE CRANKCASE VENTILATION ...............530
Description ............................................................530
Component Inspection ..........................................530
AUTOMATIC SPEED CONTROL DEVICE (ASCD) .532
System Description ...............................................532
Component Description ........................................533
SERVICE DATA AND SPECIFICATIONS (SDS) ....534
Fuel Pressure .......................................................534
Idle Speed and Ignition Timing .............................534
Calculated Load Value ..........................................534
Mass Air Flow Sensor ...........................................534
Intake Air Temperature Sensor .............................534
Engine Coolant Temperature Sensor ...................534
Heated Oxygen Sensor 1 Heater .........................534
Heated Oxygen sensor 2 Heater ..........................535
Crankshaft Position Sensor (POS) .......................535
Camshaft Position Sensor (PHASE) ....................535
Throttle Control Motor ...........................................535
Injector ..................................................................535
Fuel Pump ............................................................535
QR (WITHOUT EURO-OBD)
INDEX FOR DTC .....................................................536
Alphabetical Index ................................................536
DTC No. Index ......................................................538
PRECAUTIONS .......................................................540
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ...............................................................540
On Board Diagnostic (OBD) System of Engine ....540
Precaution ............................................................540
PREPARATION .......................................................544
Special Service Tools ...........................................544
Commercial Service Tools ....................................545
ENGINE CONTROL SYSTEM ................................546
System Diagram ...................................................546
Vacuum Hose Drawing .........................................548
System Chart ........................................................550
Multiport Fuel Injection (MFI) System ...................551
Electronic Ignition (EI) System .............................553
Air Conditioning Cut Control .................................554
Fuel Cut Control (At No Load and High Engine
Speed) ..................................................................554
CAN Communication Unit .....................................555
BASIC SERVICE PROCEDURE .............................561
Idle Speed and Ignition Timing Check ..................561
Accelerator Pedal Released Position Learning ....562
Throttle Valve Closed Position Learning ...............563
Idle Air Volume Learning ......................................563
Fuel Pressure Check ............................................565
ON BOARD DIAGNOSTIC (OBD) SYSTEM ..........568
Introduction ...........................................................568
Two Trip Detection Logic ......................................568
Emission-Related Diagnostic Information .............568
NATS (Nissan Anti-Theft System) .........................570
Malfunction Indicator (MI) .....................................571
TROUBLE DIAGNOSIS ..........................................574
Trouble Diagnosis Introduction .............................574
DTC Inspection Priority Chart ...............................578
Fail-Safe Chart ......................................................579
Basic Inspection ....................................................580
Symptom Matrix Chart ..........................................586
Engine Control Component Parts Location ...........590
Circuit Diagram .....................................................595
ECM Harness Connector Terminal Layout ............597
ECM Terminals and Reference Value ...................597
CONSULT-II Function (ENGINE) ..........................606
CONSULT-II Reference Value in Data Monitor Mode
.617
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................620
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .622
Description ............................................................622
Testing Condition ..................................................622
Inspection Procedure ............................................622
Diagnostic Procedure ............................................623
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT .......................................................................626
Description ............................................................626
Diagnostic Procedure ............................................626
POWER SUPPLY AND GROUND CIRCUIT ...........627
Wiring Diagram .....................................................627
Diagnostic Procedure ............................................628
Component Inspection ..........................................634
Ground Inspection .................................................634
DTC U1000, U1001 CAN COMMUNICATION LINE .635
Description ............................................................635
On Board Diagnosis Logic ....................................635
DTC Confirmation Procedure ................................635
Wiring Diagram .....................................................636
Diagnostic Procedure ............................................637
DTC P0011 IVT CONTROL .....................................638
Description ............................................................638
CONSULT-II Reference Value in Data Monitor Mode
.639
On Board Diagnosis Logic ....................................639
DTC Confirmation Procedure ................................639
Overall Function Check .........................................641
Wiring Diagram .....................................................642
Diagnostic Procedure ............................................643
Component Inspection ..........................................645
Removal and Installation .......................................645
DTC P0102, P0103 MAF SENSOR .........................646
Component Description ........................................646
CONSULT-II Reference Value in Data Monitor Mode
.646
On Board Diagnosis Logic ....................................646
DTC Confirmation Procedure ................................646
Wiring Diagram .....................................................648
Diagnostic Procedure ............................................649
Component Inspection ..........................................652
Removal and Installation .......................................653
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