Harley Davidson Sportster Models 2009. Service Repair Manual — page 41

2009 Harley-Davidson Sportster Models

Electrical Diagnostic Manual

99495-09

Harley-Davidson motorcycles conform to all applicable U.S.A. Federal Motor Vehicle Safety Standards
and U.S.A. Environmental Protection Agency regulations effective on the date of manufacture.

To maintain the safety, dependability, and emission and noise control performance, it is essential that
the procedures, specifications and service instructions in this manual are followed.

Any substitution, alteration or adjustment of emission system and noise control components outside of
factory specifications may be prohibited by law.

IMPORTANT NOTICE

Harley-Davidson Motor Company

2009 Harley-Davidson

Sportster Models Electrical

Diagnostic Manual

99495-09

Printed in the U.S.A.

VISIT THE HARLEY-DAVIDSON WEB SITE

http://www.harley-davidson.com

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Please clip out and mail to:
Service Communications Department
Harley-Davidson Motor Company
P.O. Box 653
Milwaukee, WI USA 53201

The Harley-Davidson Service Communications Department maintains a continuous effort to improve the quality
and usefulness of its publications. To do this effectively, we need user feedback - your critical evaluation of
this manual.

2009 Harley-Davidson Sportster Models Electrical Diagnostic Manual (99495-09)

NOTES

ABOUT THIS MANUAL

GENERAL

This electrical diagnostic service manual has been prepared
with two purposes in mind. First, it will acquaint the user with
the construction of the Harley-Davidson product and assist in
the performance of repair. Secondly, it will introduce to the
professional Harley-Davidson Technician the latest field-tested
and factory-approved diagnostic methods. We sincerely believe
that this manual will make your association with Harley-Dav-
idson products more pleasant and profitable.

HOW TO USE YOUR SERVICE MANUAL

Refer to the table below for the content layout of this manual.

CHAPTER

NO.

Starting / Charging

Instruments

TSM/HFSM

Engine Management

Appendix A Connector Repair

Appendix B Wiring

Appendix C Conversions

Appendix D Glossary

Appendix E TSM/TSSM (Japan/Korea)

Use the TABLE OF CONTENTS (which follows this FORE-
WORD) and the INDEX (at the back of this manual) to quickly
locate subjects. Sections and topics in this manual are
sequentially numbered for easy navigation.

For example, a cross-reference shown as 2.1 SPECIFICA-
TIONS refers to chapter 2 CHASSIS, heading 2.1 SPECIFIC-
ATIONS.

For quick and easy reference, all pages contain a section
number followed by a page number. For example, page 3-5
refers to page 5 in section 3.

A number of acronyms and abbreviations are used in this
document. See the

D.1 GLOSSARY

for a list of acronyms,

abbreviations and definitions.

PREPARATION FOR SERVICE

Stop the engine when refueling or servicing the fuel
system. Do not smoke or allow open flame or sparks near
gasoline. Gasoline is extremely flammable and highly
explosive, which could result in death or serious injury.
(00002a)

Good preparation is very important for efficient service work.
A clean work area at the start of each job will allow you to
perform the repair as easily and quickly as possible, and will
reduce the incidence of misplaced tools and parts. A motorcycle
that is excessively dirty should be cleaned before work starts.
Cleaning will occasionally uncover sources of trouble. Tools,
instruments and any parts needed for the job should be
gathered before work is started. Interrupting a job to locate
tools or parts is a distraction and causes needless delay.

NOTES

•

To avoid unnecessary disassembly, carefully read all rel-
ative service information before repair work is started.

•

In figure legends, the number which follows the name of
a part indicates the quantity necessary for one complete
assembly.

•

When servicing a vehicle equipped with the Harley-Dav-
idson Smart Security System (H-DSSS), you must first
disarm the security system. Either keep the fob in close
proximity to the vehicle, or use Digital Technician II to
disable the security system while the vehicle is being ser-
viced and re-enable the system after service is completed.

SERVICE BULLETINS

In addition to the information presented in this Service Manual,
Harley-Davidson Motor Company will periodically issue Service
Bulletins to Harley-Davidson dealers. Service Bulletins cover
interim engineering changes and supplementary information.
Consult the Service Bulletins to keep your product knowledge
current and complete.

USE GENUINE REPLACEMENT PARTS

Do not use aftermarket parts and custom made front forks
which can adversely affect performance and handling.
Removing or altering factory installed parts can adversely
affect performance and could result in death or serious
injury. (00001a)

To ensure satisfactory and lasting repairs, carefully follow the
Service Manual instructions and use only genuine Harley-
Davidson replacement parts. Behind the emblem bearing the
words GENUINE HARLEY-DAVIDSON stand more than 100
years of design, research, manufacturing, testing and inspecting
experience. This is your assurance that the parts you are using
will fit right, operate properly and last longer.

WARNINGS AND CAUTIONS

Statements in this service manual preceded by the following
words are of special significance.

WARNING indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury. (00119a)

CAUTION indicates a potentially hazardous situation
which, if not avoided, may result in minor or moderate
injury. (00139a)

CAUTION used without the safety alert symbol indicates
a potentially hazardous situation which, if not avoided,
may result in property damage. (00140a)

FOREW

ORD

NOTE

Refers to important information, and is placed in italic type. It
is recommended that you take special notice of these items.

Proper service and repair is important for the safe, reliable
operation of all mechanical products. The service procedures
recommended and described in this service manual are
effective methods for performing service operations.

Always wear proper eye protection when using hammers,
arbor or hydraulic presses, gear pullers, spring com-
pressors, slide hammers and similar tools. Flying parts
could result in death or serious injury. (00496b)

Some of these service operations require the use of tools
specially designed for the purpose. These special tools should
be used when and as recommended. It is important to note
that some warnings against the use of specific service methods,
which could damage the motorcycle or render it unsafe, are
stated in this service manual. However, please remember that
these warnings are not all-inclusive. Inadequate safety precau-
tions could result in death or serious injury.

Since Harley-Davidson could not possibly know, evaluate or
advise the service trade of all possible ways in which service
might be performed, or of the possible hazardous con-
sequences of each method, we have not undertaken any such
broad evaluation. Accordingly, anyone who uses a service
procedure or tool which is not recommended by Harley-Dav-
idson must first thoroughly satisfy himself that neither his nor
the operator's safety will be jeopardized as a result. Failure to
do so could result in death or serious injury.

PRODUCT REFERENCES

Read and follow warnings and directions on all products.
Failure to follow warnings and directions can result in
death or serious injury. (00470b)

When reference is made in this manual to a specific brand
name product, tool or instrument, an equivalent product, tool
or instrument may be substituted.

Kent-Moore Products

All tools mentioned in this manual with an "HD", "J" or "B"
preface must be ordered through SPX Kent-Moore. For ordering

information or product returns, warranty or otherwise, visit
www.spx.com.

Loctite Sealing and Threadlocking Products

Some procedures in this manual call for the use of Loctite
products. If you have any questions regarding Loctite product
usage or retailer/wholesaler locations, please contact Loctite
Corp. at www.loctite.com.

PRODUCT REGISTERED MARKS

Allen, Amp Multilock, Bluetooth, Brembo, Delphi, Deutsch,
Dunlop, Dynojet, Fluke, G.E. Versilube, Gunk, Hydroseal,
Hylomar, Kevlar, Lexan, Loctite, Lubriplate, Keps, K&N, Mag-
naflux, Marson Thread-Setter Tool Kit, MAXI fuse, Molex, MPZ,
Mulitilock, Novus, Packard, Pirelli, Permatex, Philips, PJ1,
Pozidriv, Robinair, S100, Sems, Snap-on, Teflon, Threadlocker,
Torca, Torco, TORX, Tufoil, Tyco, Ultratorch, Velcro, X-Acto,
and XM Satellite Radio are among the trademarks of their
respective owners.

H-D MICHIGAN, INC. TRADEMARK
INFORMATION

Harley, Harley-Davidson, H-D, Bar & Shield, Cross Bones,
Digital Tech, Digital Technician, Digital Technician II, Dyna,
Electra Glide, Evolution, Fat Bob, Fat Boy, Glaze, Gloss, H-D,
H-Dnet.com, HD, Harley, Harley-Davidson, Heritage Softail,
Low Rider, Night Rod, Nightster, Night Train, Profile, Revolu-
tion, Road Glide, Road King, Road Tech, Rocker, Softail,
Sportster, Street Glide, Street Rod, Sun Ray, Sunwash, Tech
Link, Twin Cam 88, Twin Cam 88B, Twin Cam 96, Twin Cam
96B, Twin Cam 103, Twin Cam 103B, Twin Cam 110, Twin
Cam 110B, Tour-Pak, Screamin' Eagle, Softail, Super Glide,
SYN3, Ultra Classic, V-Rod, VRSC and Harley-Davidson
Genuine Motor Parts and Genuine Motor Accessories are
among the trademarks of H-D Michigan, Inc.

CONTENTS

All photographs, illustrations and procedures may not neces-
sarily depict the most current model or component, but are
based on the latest production information available at the time
of publication.

Since product improvement is our continual goal, Harley-Dav-
idson reserves the right to change specifications, equipment
or designs at any time without notice and without incurring
obligation.

II FOREWORD

STARTING / CHARGING

1.1 STARTER TROUBLESHOOTING

General. . . . . . . . . . . . . . . . . . . ...1-1
Starter Troubleshooting. . . . . . . . . . . . . ..1-1

1.2 STARTING SYSTEM DIAGNOSIS

Diagnostics. . . . . . . . . . . . . . . . . . .1-3

Diagnostic Notes. . . . . . . . . . . . . . .1-3
Job/Time Code Values. . . . . . . . . . . . 1-3

1.3 DIAGNOSTICS/TROUBLESHOOTING

Voltage Drop. . . . . . . . . . . . . . . . . .1-11

1.4 STARTER ACTIVATION CIRCUITS

Starter Activation Circuits. . . . . . . . . . . . .1-12

1.5 TESTING STARTER ON MOTORCYCLE