Suzuki DF70A - Section 1 Power Head; Default Chapter; Table of Contents

Table of Contents 1- i
1
Section 1
CONTENTS
Power Head
Precautions .................................................1-1
Precautions............................................................. 1-1
Precautions for Powerhead................................... 1-1
Engine General Information and
Diagnosis ................................................. 1A-1
Precautions...........................................................1A-1
Precautions on Engine Diagnosis ....................... 1A-1
General Description .............................................1A-2
Engine Control System Description ....................1A-2
Engine Control Module (ECM) ............................1A-4
Caution System Description................................ 1A-7
Self-Diagnostic System Description.................. 1A-10
Fail-Safe System Description............................ 1A-12
Operating Hour Indication System
Description ......................................................1A-13
Oil Change Reminder System Description........1A-14
Component Location .........................................1A-15
Engine Control System Components / Engine
Electrical Device Location...............................1A-15
Diagnostic Information and Procedure............1A-20
ECM Power and Ground Circuit Check............. 1A-20
Troubleshooting with Self-Diagnostic Code ...... 1A-21
Self-Diagnostic Code “3 – 4” MAP Sensor........ 1A-22
Self-Diagnostic Code “1 – 4” Cylinder Temp.
Sensor.............................................................1A-23
Self-Diagnostic Code “2 – 3” IAT Sensor.......... 1A-24
Self-Diagnostic Code “4 – 2” CKP Sensor ........1A-25
Self-Diagnostic Code “2 – 4” CMP Sensor........ 1A-26
Self-Diagnostic Code “2 – 2” Air Intake
System ............................................................ 1A-27
Self-Diagnostic Code “3 – 2” MAP Sensor 2..... 1A-28
Self-Diagnostic Code “1 – 5” Ex. Manifold
Temp. Sensor ................................................. 1A-30
Self-Diagnostic Code “4 – 3” Fuel Injector ........1A-31
Self-Diagnostic Code “2 – 1” TPS (Throttle
Position Sensor).............................................. 1A-32
Self-Diagnostic Code “1 – 2” Shift Position
Sensor.............................................................1A-33
Self-Diagnostic Code “3 – 3” Neutral Switch.....1A-34
Self-Diagnostic Code “1 – 1” Rectifier/
Regulator (Over Charging).............................. 1A-35
Self-Diagnostic Code “5 – 3” Oil Pressure
Switch .............................................................1A-35
Self-Diagnostic Code “3 – 7” Trim Sensor ........1A-36
Troubleshooting Without Self-Diagnostic
Code................................................................1A-37
IAC System Troubleshooting ............................1A-38
Service Instructions...........................................1A-39
How to Use the 36 Pin Test Cord Set ...............1A-39
Inspection of the ECM and Its Circuit................1A-39
ECM Main Relay Inspection..............................1A-42
Engine Electrical Devices ....................... 1C-1
Precautions...........................................................1C-1
Precaution for Engine Electrical Device ..............1C-1
General Description .............................................1C-1
Sensor and Switch Description ...........................1C-1
ECM Power Source Line.....................................1C-6
Component Location ...........................................1C-7
Location of Sensor and Switch............................1C-7
Service Instructions.............................................1C-7
Resistance Check ...............................................1C-7
Cylinder Temp. Sensor Removal and
Installation .........................................................1C-8
Cylinder Temp. Sensor Inspection ......................1C-8
Ex. Manifold Temp. Sensor Removal and
Installation .........................................................1C-9
Ex. Manifold Temp. Sensor Inspection ...............1C-9
CKP Sensor Removal and Installation ..............1C-10
CKP Sensor Inspection .....................................1C-10
IAT Sensor Removal and Installation................1C-10
IAT Sensor Inspection.......................................1C-11
CMP Sensor Removal and Installation .............1C-11
CMP Sensor Inspection ....................................1C-11
MAP Sensor Removal and Installation..............1C-12
MAP Sensor Output Voltage Inspection............1C-13
IAC Valve Removal and Installation..................1C-14
IAC Valve Inspection.........................................1C-14
TPS Inspection..................................................1C-15
Shift Position Sensor Inspection .......................1C-16
Trim Sensor Inspection .....................................1C-17
Power Unit Mechanical ........................... 1D-1
General Description .............................................1D-1
Power Unit Construction Description ..................1D-1
Diagnostic Information and Procedures............1D-1
Cylinder Compression Check..............................1D-1
Oil Pressure Check .............................................1D-1
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