2008 Harley-Davidson Dyna Models Electrical Diagnostics Manual

Harley Davidson 2008 Dyna Models Electrical Diagnostics Manual (99496-08)

This factory-issued diagnostic manual provides in-depth electrical troubleshooting procedures for all 2008 Harley-Davidson Dyna models. It covers the starting and charging systems, instrument diagnostics, turn signal and security modules, engine management systems, wiring schematics, and connector repair guides. Ideal for trained technicians and experienced service professionals, this manual offers system-specific DTC resolution and advanced electronic component diagnostics.

Model Covers:

Harley Davidson 2008 DYNA models:
FXD – Dyna Super Glide
FXDC – Dyna Super Glide Custom
FXDB – Dyna Street Bob
FXDL – Dyna Low Rider
FXDF – Dyna Fat Bob
FXDWG – Dyna Wide Glide

File Format: PDF

Size: 11.15 MB

No. of pages: 474

Language: English

Delivery Method: Instant Download – Access your file immediately after purchase.

Note: For mechanical service procedures, including engine disassembly, chassis maintenance, fuel system repairs, and drivetrain adjustments, consult the 2008 Harley-Davidson Dyna Models Service Manual (99481-08). It provides the complete mechanical servicing required to support the electrical diagnostics outlined in this manual.

📑 Included Sections:

1. Starting and Charging Systems

• Starter troubleshooting and circuit activation tests
• On-bike and bench starter current draw diagnostics
• Battery testing: voltmeter, conductance, and load test methods
• Charging system troubleshooting with alternator and voltage regulator testing

2. Instruments and DTCs

• Diagnostic Trouble Code (DTC) retrieval and interpretation
• Speedometer, tachometer, and fuel gauge diagnostics
• Indicator lamp troubleshooting (separate logic for FXDWG/FXDC/FXDF)
• Odometer operation and self-diagnostics functionality

3. TSM / HFSM – Turn Signal & Security System

• Smart Security System functions including PIN setup and fob configuration
• Automatic/manual signal canceling, interlock diagnostics, and alarm modes
• Failsafe modes and security disarming failures (HFSM only)
• System-specific DTCs including B1131–B1145, U1016, U1255, and BUS ER

4. Engine Management System

• Electronic Fuel Injection (EFI) diagnostics and intake leak testing
• Ignition timing, idle air control, and ECM no-start conditions
• Extensive sensor-specific DTC breakdowns from P0107 to P1502
• Includes wiring for fuel injection and system relay logic

Appendices

• Connector Repair: Detailed repair for AMP, Deutsch, Molex, and Metri-Pack terminals
• Wiring Diagrams: Complete wiring schematics by model and system
• Conversions: Torque, fluid, and metric unit charts
• Glossary: Acronyms and abbreviations for electrical components
• Japan/Korea Models: TSM/TSSM regional variations and diagnostics included

This Harley Davidson 2008 Dyna Models Electrical Diagnostics Manual is an indispensable resource for deep diagnostics, sensor-specific troubleshooting, and secure handling of TSM/HFSM systems. Includes all logic paths and system response codes for fast, accurate repair outcomes.