Index Infiniti Infiniti M35/M45 Y50 - service repair manual 2007 year
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Infiniti M35/M45 Y50. Manual - part 382
EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
C
D
E
F
G
H
I
J
K
L
M
SECTION
EC
A
VQ35DE
INDEX FOR DTC ...................................................... 16
DTC No. Index ....................................................... 16Alphabetical Index .................................................. 20
PRECAUTIONS ........................................................ 24
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TEN-SIONER” ................................................................ 24Precautions for Procedures without Cowl Top Cover
... 24
On Board Diagnostic (OBD) System of Engine and A/T .......................................................................... 24Precaution .............................................................. 25
PREPARATION ......................................................... 28
Special Service Tools ............................................. 28Commercial Service Tools ...................................... 29
ENGINE CONTROL SYSTEM .................................. 30
System Diagram ..................................................... 30Multiport Fuel Injection (MFI) System .................... 31Electronic Ignition (EI) System ............................... 33Fuel Cut Control (At No Load and High Engine Speed) .................................................................... 34
AIR CONDITIONING CUT CONTROL ..................... 35
Input/Output Signal Chart ....................................... 35System Description ................................................ 35
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
... 36
System Description ................................................ 36Component Description .......................................... 37
CAN COMMUNICATION .......................................... 38
System Description ................................................ 38
EVAPORATIVE EMISSION SYSTEM ....................... 39
Description ............................................................. 39Component Inspection ........................................... 42Removal and Installation ........................................ 43How to Detect Fuel Vapor Leakage ....................... 43
ON BOARD REFUELING VAPOR RECOVERY (ORVR) ...................................................................... 46
System Description ................................................ 46Diagnostic Procedure ............................................. 47Component Inspection ........................................... 49
POSITIVE CRANKCASE VENTILATION ................. 51
Description .............................................................. 51Component Inspection ............................................ 51
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS) ........................................................................ 53
Description .............................................................. 53
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 54
Introduction ............................................................. 54Two Trip Detection Logic ........................................ 54Emission-Related Diagnostic Information ............... 55Malfunction Indicator Lamp (MIL) ........................... 70OBD System Operation Chart ................................ 73
BASIC SERVICE PROCEDURE ............................... 78
Basic Inspection ..................................................... 78Idle Speed and Ignition Timing Check .................... 83Procedure After Replacing ECM ............................ 85VIN Registration ..................................................... 85Accelerator Pedal Released Position Learning ...... 86Throttle Valve Closed Position Learning ................. 86Idle Air Volume Learning ........................................ 86Fuel Pressure Check .............................................. 88
TROUBLE DIAGNOSIS ............................................ 90
Trouble Diagnosis Introduction ............................... 90DTC Inspection Priority Chart ................................. 96Fail-Safe Chart ....................................................... 98Symptom Matrix Chart ............................................ 99Engine Control Component Parts Location .......... 103Vacuum Hose Drawing ..........................................111Circuit Diagram ..................................................... 112ECM Harness Connector Terminal Layout ........... 114ECM Terminals and Reference Value ................... 114CONSULT-II Function (ENGINE) .......................... 123Generic Scan Tool (GST) Function ....................... 135CONSULT-II Reference Value in Data Monitor ..... 138Major Sensor Reference Graph in Data Monitor Mode ..................................................................... 141
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .143
Description ............................................................ 143Testing Condition .................................................. 143