ENGINE CONTROL SYSTEM
SECTION
EC
CONTENTS
KA24DE
TROUBLE DIAGNOSIS - INDEX ..................................13
Alphabetical & P No. Index for DTC .........................13
PRECAUTIONS .............................................................17
Supplemental Restraint System (SRS) ″AIR
BAG″ and ″SEAT BELT PRE-TENSIONER″.............17
Precautions for On Board Diagnostic (OBD)
System of Engine and A/T.........................................17
Engine Fuel & Emission Control System..................18
Precautions................................................................19
Wiring Diagrams and Trouble Diagnosis...................20
PREPARATION .............................................................21
Special Service Tools ................................................21
Commercial Service Tools.........................................21
ENGINE AND EMISSION CONTROL OVERALL
SYSTEM.........................................................................23
Engine Control Component Parts Location...............23
Circuit Diagram..........................................................25
System Diagram........................................................26
Vacuum Hose Drawing..............................................27
System Chart.............................................................28
ENGINE AND EMISSION BASIC CONTROL
SYSTEM DESCRIPTION...............................................29
Multiport Fuel Injection (MFI) System .......................29
Distributor Ignition (DI) System .................................31
Air Conditioning Cut Control......................................33
Fuel Cut Control (at no load & high engine
speed)........................................................................33
Evaporative Emission System...................................34
On Board Refueling Vapor Recovery (ORVR)..........39
Positive Crankcase Ventilation..................................49
BASIC SERVICE PROCEDURE...................................51
Fuel Pressure Release..............................................51
Fuel Pressure Check.................................................51
Fuel Pressure Regulator Check................................52
Injector.......................................................................52
Fast Idle Cam (FIC)...................................................53
Idle Speed/Ignition Timing/Idle Mixture Ratio
Adjustment.................................................................53
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION...............................................................67
Introduction................................................................67
Two Trip Detection Logic...........................................67
Emission-related Diagnostic Information...................68
Malfunction Indicator Lamp (MIL)..............................80
OBD System Operation Chart...................................81
CONSULT-II...............................................................86
Generic Scan Tool (GST)..........................................98
TROUBLE DIAGNOSIS - INTRODUCTION................100
Introduction..............................................................100
Work Flow................................................................102
TROUBLE DIAGNOSIS - BASIC INSPECTION.........104
Basic Inspection.......................................................104
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION.............................................................118
DTC Inspection Priority Chart..................................118
Fail-safe Chart.........................................................119
Symptom Matrix Chart.............................................120
CONSULT-II Reference Value in Data Monitor
Mode........................................................................124
Major Sensor Reference Graph in Data Monitor
Mode........................................................................126
ECM Terminals and Reference Value .....................129
TROUBLE DIAGNOSIS - SPECIFICATION
VALUE..........................................................................138
Description...............................................................138
Testing Condition.....................................................138
Inspection Procedure...............................................138
Diagnostic Procedure ..............................................139
TROUBLE DIAGNOSIS FOR INTERMITTENT
INCIDENT.....................................................................142
Description...............................................................142
Diagnostic Procedure ..............................................142
TROUBLE DIAGNOSIS FOR POWER SUPPLY........143
Main Power Supply and Ground Circuit..................143
DTC P0100 MASS AIR FLOW SENSOR (MAFS)......150
GI
MA
EM
LC
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
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