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.........71
Throttle Valve Closed Position Learning ...................71
Idle Air Volume Learning ...........................................71
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION ...............................................................75
Introduction ................................................................75
Two Trip Detection Logic ...........................................75
Emission-related Diagnostic Information ...................76
Malfunction Indicator Lamp (MIL)..............................90
OBD System Operation Chart ...................................94
CONSULT-II ...............................................................99
Generic Scan Tool (GST) ........................................ 113
TROUBLE DIAGNOSIS - INTRODUCTION................ 115
Introduction .............................................................. 115
Work Flow................................................................ 117
TROUBLE DIAGNOSIS - BASIC INSPECTION ......... 119
Basic Inspection....................................................... 119
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION .............................................................124
DTC Inspection Priority Chart..................................124
Fail-safe Chart .........................................................125
Symptom Matrix Chart.............................................126
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................130
Major Sensor Reference Graph in Data Monitor
Mode ........................................................................133
ECM Terminals and Reference Value .....................136
TROUBLE DIAGNOSIS - SPECIFICATION VALUE ..147
Description ...............................................................147
Testing Condition .....................................................147
Inspection Procedure...............................................147
Diagnostic Procedure ..............................................148
TROUBLE DIAGNOSIS FOR INTERMITTENT
INCIDENT.....................................................................151
Description ...............................................................151
Diagnostic Procedure ..............................................151
TROUBLE DIAGNOSIS FOR POWER SUPPLY........152
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX