Index Infiniti Infiniti G35 (V35) Coupe - service repair manual 2007 year
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Infiniti G35 (V35). Manual - part 280
EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
C
D
E
F
G
H
I
J
K
L
M
SECTION
A
EC
INDEX FOR DTC ........................................................ 8
DTC No. Index ......................................................... 8Alphabetical Index .................................................. 12
PRECAUTIONS ........................................................ 16
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TEN-SIONER” ................................................................ 16Precautions for Battery Service .............................. 16On Board Diagnostic (OBD) System of Engine and A/T .......................................................................... 16Precaution .............................................................. 17
PREPARATION ......................................................... 20
Special Service Tools ............................................. 20Commercial Service Tools ...................................... 21
ENGINE CONTROL SYSTEM .................................. 22
System Diagram (A/T models) ............................... 22System Diagram (M/T models) .............................. 23Multiport Fuel Injection (MFI) System .................... 24Electronic Ignition (EI) System ............................... 26Fuel Cut Control (at No Load and High Engine Speed) .................................................................... 27
AIR CONDITIONING CUT CONTROL ..................... 28
Input/Output Signal Chart ....................................... 28
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
... 29
System Description ................................................ 29Component Description .......................................... 30
CAN COMMUNICATION .......................................... 31
System Description ................................................ 31
EVAPORATIVE EMISSION SYSTEM ....................... 32
Description ............................................................. 32Component Inspection ........................................... 35Removal and Installation ........................................ 36How to Detect Fuel Vapor Leakage ....................... 36
ON BOARD REFUELING VAPOR RECOVERY (ORVR) ...................................................................... 39
System Description ................................................ 39Diagnostic Procedure ............................................. 40Component Inspection ........................................... 42
POSITIVE CRANKCASE VENTILATION ................. 44
Description .............................................................. 44Component Inspection ............................................ 44
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS) ........................................................................ 46
Description .............................................................. 46
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 47
Introduction ............................................................. 47Two Trip Detection Logic ........................................ 47Emission-Related Diagnostic Information ............... 48Malfunction Indicator Lamp (MIL) ........................... 62OBD System Operation Chart ................................ 66
BASIC SERVICE PROCEDURE ............................... 71
Basic Inspection ..................................................... 71Idle Speed and Ignition Timing Check .................... 76Procedure After Replacing ECM ............................ 77VIN Registration ..................................................... 77Exhaust Valve Timing Control Learning (M/T mod-els) .......................................................................... 78Accelerator Pedal Released Position Learning ...... 79Throttle Valve Closed Position Learning ................. 79Idle Air Volume Learning ........................................ 79Fuel Pressure Check .............................................. 81
TROUBLE DIAGNOSIS ............................................ 83
Trouble Diagnosis Introduction ............................... 83DTC Inspection Priority Chart ................................. 89Fail-Safe Chart ....................................................... 91Symptom Matrix Chart ............................................ 92Engine Control Component Parts Location (A/T models) ................................................................... 96Engine Control Component Parts Location (M/T models) ................................................................. 102Vacuum Hose Drawing ......................................... 108Circuit Diagram ..................................................... 109ECM Harness Connector Terminal Layout ............111ECM Terminals and Reference Value ....................111CONSULT-II Function (ENGINE) .......................... 121Generic Scan Tool (GST) Function ....................... 133CONSULT-II Reference Value in Data Monitor ..... 135Major Sensor Reference Graph in Data Monitor Mode ..................................................................... 139