
1.5
DIAGNOSTICS/TROUBLESHOOTING
GENERAL
The troubleshooting tables in
contain procedures to solve and correct most common
problems. The
1.5 DIAGNOSTICS/TROUBLESHOOTING,
procedure below will help you to locate poor
connections or components with excessive voltage drops.
VOLTAGE DROPS
Check the integrity of all wiring, switches, fuses and connectors
between the source and destination.
The voltage drop test measures the difference in potential or
the actual voltage dropped between the source and destination.
1.
. Attach your red meter lead to
the most positive part of the circuit, which in this case
would be the positive post of the battery.
2.
See ITEM B in
. Attach the black meter lead to
the final destination or component in the circuit (solenoid
terminal from relay).
3.
Activate the starter and observe the meter reading. The
meter will read the voltage dropped or the difference in
potential between the source and destination. An ideal
circuit's voltage drop would be 0 volts or no voltage
dropped, meaning no difference in potential.
4.
See ITEM C in
. An open circuit should read 12
volts, displaying all the voltage dropped, and the entire
difference in potential displayed on the meter.
NOTE
Open circuits on the ground side will read zero.
5.
Typically, a good circuit will drop less than 1.0 volt. If the
voltage drop is greater, back track through the connections
until the source of the potential difference is found. The
benefits of doing it this way are speed and accuracy.
a.
Readings aren't as sensitive to real battery voltage.
b.
Readings show the actual voltage dropped, not just
the presence of voltage.
c.
This tests the system as it is actually being used. It
is more accurate and will display hard to find poor
connections.
d.
This approach can be used on lighting circuits, ignition
circuits, etc. Start from most positive and go to most
negative (the destination or component).
6.
See ITEM D in
. The negative or ground circuit
can be checked as well.
a.
Place the negative lead on the most negative part of
the circuit (or the negative battery post). Remember,
there is nothing more negative than the negative post
of the battery.
b.
Place the positive lead to the ground you wish to
check.
c.
Activate the circuit. This will allow you to read the
potential difference or voltage dropped on the neg-
ative or ground circuit. This technique is very effective
for identifying poor grounds due to powdered paint.
Even the slightest connection may cause an ohm-
meter to give a good reading. However, when suffi-
cient current is passed through, the resistance caused
by the powdered paint will cause a voltage drop or
potential difference in the ground circuit.
2008 Buell XB Diagnostics: Starting / Charging 1-15
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 ...