Loading ...
Loading ...
Loading ...
Precautions for On Board Diagnostic (OBD)
System of Engine and A/T.......................................603
Engine Fuel & Emission Control System................604
Precautions..............................................................605
Wiring Diagrams and Trouble Diagnosis.................606
PREPARATION ...........................................................607
Special Service Tools ..............................................607
Commercial Service Tools.......................................607
ENGINE AND EMISSION CONTROL OVERALL
SYSTEM.......................................................................609
Engine Control Component Parts Location.............609
Circuit Diagram........................................................611
System Diagram......................................................612
Vacuum Hose Drawing............................................613
System Chart...........................................................614
ENGINE AND EMISSION BASIC CONTROL
SYSTEM DESCRIPTION.............................................615
Multiport Fuel Injection (MFI) System .....................615
Distributor Ignition (DI) System ...............................617
Air Conditioning Cut Control....................................618
Fuel Cut Control (at no load & high engine
speed)......................................................................619
Evaporative Emission System.................................619
On Board Refueling Vapor Recovery (ORVR)........625
Positive Crankcase Ventilation................................635
BASIC SERVICE PROCEDURE.................................637
Fuel Pressure Release............................................637
Fuel Pressure Check...............................................637
Fuel Pressure Regulator Check..............................638
Injector.....................................................................638
Fast Idle Cam (FIC).................................................639
Idle Speed/Ignition Timing/Idle Mixture Ratio
Adjustment...............................................................641
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION.............................................................653
Introduction..............................................................653
Two Trip Detection Logic.........................................653
Emission-related Diagnostic Information.................654
Malfunction Indicator Lamp (MIL)............................668
OBD System Operation Chart.................................669
CONSULT-II.............................................................675
Generic Scan Tool (GST)........................................688
TROUBLE DIAGNOSIS - INTRODUCTION................690
Introduction..............................................................690
Work Flow................................................................692
TROUBLE DIAGNOSIS - BASIC INSPECTION.........694
Basic Inspection.......................................................694
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION.............................................................708
DTC Inspection Priority Chart..................................708
Fail-safe Chart.........................................................709
Symptom Matrix Chart.............................................710
CONSULT-II Reference Value in Data Monitor
Mode........................................................................714
Major Sensor Reference Graph in Data Monitor
Mode........................................................................716
ECM Terminals and Reference Value .....................719
TROUBLE DIAGNOSIS - SPECIFICATION
VALUE..........................................................................728
Description...............................................................728
Testing Condition.....................................................728
Inspection Procedure...............................................728
Diagnostic Procedure ..............................................729
TROUBLE DIAGNOSIS FOR INTERMITTENT
INCIDENT.....................................................................732
Description...............................................................732
Diagnostic Procedure ..............................................732
TROUBLE DIAGNOSIS FOR POWER SUPPLY........733
Main Power Supply and Ground Circuit..................733
DTC P0100 MASS AIR FLOW SENSOR (MAFS)......739
Component Description...........................................739
CONSULT-II Reference Value in Data Monitor
Mode........................................................................739
ECM Terminals and Reference Value .....................739
On Board Diagnosis Logic.......................................739
DTC Confirmation Procedure..................................740
Overall Function Check...........................................742
Wiring Diagram........................................................743
Diagnostic Procedure ..............................................744
DTC P0105 ABSOLUTE PRESSURE SENSOR ........748
Component Description...........................................748
On Board Diagnosis Logic.......................................748
DTC Confirmation Procedure..................................748
Diagnostic Procedure ..............................................749
DTC P0110 INTAKE AIR TEMPERATURE
SENSOR ......................................................................750
Component Description...........................................750
On Board Diagnosis Logic.......................................750
DTC Confirmation Procedure..................................750
Wiring Diagram........................................................752
Diagnostic Procedure ..............................................753
DTC P0115 ENGINE COOLANT TEMPERATURE
SENSOR (ECTS) (CIRCUIT).......................................755
Component Description...........................................755
On Board Diagnosis Logic.......................................755
DTC Confirmation Procedure..................................756
Wiring Diagram........................................................757
Diagnostic Procedure ..............................................758
DTC P0120 THROTTLE POSITION SENSOR ...........760
Description...............................................................760
CONSULT-II Reference Value in Data Monitor
Mode........................................................................760
ECM Terminals and Reference Value .....................761
On Board Diagnosis Logic.......................................761
CONTENTS (Cont’d)
EC-7
GI
MA
EM
LC
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
Loading ...
Loading ...
Loading ...