2.3
DIAGNOSTIC INTRODUCTION
SYSTEM PROBLEMS
All system problems fall into at least one of three general cat-
egories.
No Start
The engine cranks over freely, but will not start. This does not
include situations where the engine will not crank, such as a
security disabled starter, dead battery, etc. This condition
assumes that all obvious checks (fuel in tank, etc.) have been
made.
Poor Performance
The engine starts but there are performance problems. These
problems may include poor fuel economy, rough idle, engine
misfire, engine hesitation, severe spark knock, etc.
Check Engine Lamp
. The check engine lamp indicates the Electronic
Control Module (ECM) has determined a fault condition exists.
There may also be starting or performance problems.
1
2
ed01467
1.
Low fuel lamp
2.
Check engine lamp
Figure 2-2. Check Engine Lamp (Typical)
RESOLVING PROBLEMS
TOOL NAME
PART NUMBER
DIGITAL TECHNICIAN
HD-44750
NOTE
The most sophisticated method of resolving problems involves
using a computer-based diagnostic package called DIGITAL
TECHNICIAN (Part No. HD-44750).
To resolve system problems, five basic steps are involved. In
order of occurrence, they are:
1.
Check for diagnostic trouble codes (DTCs) by observing
check engine lamp. See
2.
Retrieve trouble codes using check engine lamp dia-
gnostics. See
2.5 CHECK ENGINE LAMP DIAGNOSTICS
3.
Diagnose system problems. This involves using special
tools and the diagnostic flow charts in this section.
4.
Correct problems through the replacement and/or repair
of the affected components.
5.
After repairs are performed, the work must be validated.
This involves clearing the trouble codes and confirming
proper vehicle operation as indicated by the behavior of
the check engine lamp.
2008 Buell XB Diagnostics: Engine Management 2-5
Содержание 2008 XB SERIES
Страница 1: ...2008 Buell XB Models Electrical Diagnostics Manual 99493 08Y 2007 Buell Motorcycle Company ...
Страница 4: ...Blank Text Here ...
Страница 6: ...NOTES ...
Страница 14: ...NOTES ...
Страница 50: ...NOTES ...
Страница 72: ...ed01568 Figure 2 16 Checking for Leaks 2 22 2008 Buell XB Diagnostics Engine Management ...
Страница 128: ...ed01338 Figure 2 61 Speedometer Tester Part No HD 41354 2 78 2008 Buell XB Diagnostics Engine Management ...
Страница 202: ...NOTES ...
Страница 224: ...A 22 2008 Buell XB Diagnostics Appendix A Connector Repair NOTES ...
Страница 225: ...SUBJECT PAGE NO B 1 CONNECTORS B 1 B 2 WIRING DIAGRAMS B 3 APPENDIX B WIRING DIAGRAMS ...
Страница 226: ...NOTES ...
Страница 232: ...Figure B 2 Figure B 2 Main Harness Ulysses and Lightning Main Harness Ulysses and Lightning ...
Страница 234: ...Figure B 3 Figure B 3 Main Harness Firebolt Main Harness Firebolt ...
Страница 236: ...Figure B 4 Figure B 4 Engine Management Circuit All Models Engine Management Circuit All Models ...
Страница 238: ...Figure B 5 Figure B 5 Lighting Circuit Ulysses and Lightning Lighting Circuit Ulysses and Lightning ...
Страница 240: ...Figure B 6 Figure B 6 Lighting Circuit Firebolt Lighting Circuit Firebolt ...
Страница 242: ...Figure B 7 Figure B 7 Component Circuits All Models Component Circuits All Models ...
Страница 244: ...Figure B 8 Figure B 8 Horn and Instruments Circuit All Models Horn and Instruments Circuit All Models ...
Страница 246: ...Figure B 9 Figure B 9 Starting Circuit Ulysses and Lightning Starting Circuit Ulysses and Lightning ...
Страница 248: ...Figure B 10 Figure B 10 Starting Circuit Firebolt Starting Circuit Firebolt ...
Страница 250: ...Figure B 11 Figure B 11 Charging Circuits All Models Charging Circuits All Models ...
Страница 252: ...Figure B 12 Figure B 12 Heated Handlebar Grips Ulysses only Heated Handlebar Grips Ulysses only ...
Страница 266: ...B 40 2008 Buell XB Diagnostics Appendix B Wiring Diagrams NOTES ...
Страница 267: ...SUBJECT PAGE NO C 1 METRIC CONVERSION C 1 C 2 FLUID CONVERSIONS C 2 C 3 TORQUE CONVERSIONS C 3 APPENDIX C CONVERSIONS ...
Страница 268: ...NOTES ...
Страница 272: ...C 4 2008 Buell XB Diagnostics Appendix C Conversions NOTES ...
Страница 273: ...SUBJECT PAGE NO D 1 GLOSSARY D 1 APPENDIX D GLOSSARY ...
Страница 274: ...NOTES ...
Страница 278: ...D 4 2008 Buell XB Diagnostics Appendix D Glossary NOTES ...
Страница 282: ...IV TOOLS NOTES ...
Страница 284: ...VI TORQUE VALUES NOTES ...
Страница 287: ...INSIDE BACK COVER GOES HERE ...
Страница 288: ...OUTSIDE BACK COVER GOES HERE ...