Daytona Twin Tec Twin Scan II: Your Ultimate Diagnostic Tool for Harley-Davidson® Motorcycles

For Harley-Davidson® enthusiasts and mechanics, diagnosing issues on 2001-2014 models can sometimes be challenging. Many of these bikes utilize the SAE J1850 data bus system for communication between various modules like the ECM, IM, TSM/TSSM, ABS, and diagnostic tools. Enter the Daytona Twin Tec Twin Scan Ii Scan Tool 15202, a cost-effective solution designed specifically for these models. This powerful tool is your key to unlocking in-depth diagnostics and optimizing the performance of your Harley-Davidson®.

The Twin Scan II ABS is compatible with a wide range of Harley-Davidson® fuel-injected models from 2001 to 2014 that use the Delphi® fuel injection system and the J1850 data bus, including V-Rod® models. It also supports 2003-2006 carbureted models equipped with the single 12 pin ignition module.

Important Compatibility Notes: It’s crucial to note that certain models are not compatible with the Twin Scan II. These include:

2011 and later Softail® models
2012 and later Dyna® models
2014 and later Touring models
1999-2003 carbureted Twin Cam 88® models
All models with the earlier Marelli® fuel injection system

These incompatible models lack the J1850 data bus, which is essential for the Twin Scan II to function.

Key Features and Benefits of the Daytona Twin Tec Twin Scan II Scan Tool 15202

The Twin Scan II ABS is more than just a code reader; it’s a comprehensive diagnostic system that offers a range of functionalities to help you understand and maintain your Harley-Davidson®.

Easy Connectivity and User-Friendly Interface

The Twin Scan II ABS connects effortlessly to your motorcycle’s OE wiring harness via the four-terminal Deutsch style data link connector. For user interface and data display, it requires a laptop PC, providing a familiar and versatile platform for diagnostics.

Read and Clear Diagnostic Trouble Codes (DTCs)

This tool allows you to read and clear diagnostic trouble codes from various modules, including:

Engine Control Module (ECM)
Turn Signal/Security Module (TSM/TSSM)
Speedometer
Tachometer (on models with IM data bus)
Anti-lock Braking System (ABS) (if equipped)

By quickly identifying and clearing DTCs, you can efficiently address issues and ensure your bike is running smoothly.

Real-Time Engine Data Monitoring

Gain valuable insights into your engine’s performance with the real-time data display feature. The Twin Scan II presents engine data in an intuitive instrument panel layout, featuring round gauges for tachometer and speedometer, and bar graphs for other parameters. Essential readings like barometric pressure, idle RPM, and system status are also clearly displayed.

For models with electronic throttle control (like 2008-2013 touring models), the Twin Scan II provides critical data on the twist grip sensor (TGS) and electronic throttle actuator (TPS) positions, displayed as TGS% and TPS%. This information is invaluable for testing and tuning these advanced systems. You can also log this real-time data directly to your laptop for later analysis.

Stand-Alone Data Logging: Diagnose Intermittent Issues

One of the most powerful features of the Daytona Twin Tec Twin Scan II Scan Tool 15202 is its stand-alone data logging capability. This unique feature allows you to record data without needing a laptop connected while riding. This is incredibly useful for diagnosing intermittent problems that are difficult to pinpoint during stationary diagnostics.

The Twin Scan II can be set to log up to one hour of data under normal conditions (no trouble codes). If a trouble code is triggered, the unit intelligently stops logging 30 minutes after the code is set, capturing crucial data leading up to and following the fault. You can then download this data days or even weeks later to analyze the events surrounding the issue.

In-Depth Data Analysis and Reporting

Downloaded data is presented in a chart recorder format, offering a detailed view of engine parameters over time. The software provides comprehensive analysis capabilities, allowing you to examine and print logged data to gain a clear understanding of engine behavior. Data can also be saved for future reference and comparison.

Twin Scan II Software Suite: Powerful and Versatile

The Twin Scan II software is the heart of this diagnostic system, offering four primary functions:

Diagnostic Trouble Code Management: Read, interpret, and clear DTCs efficiently. The software includes a comprehensive database of Harley-Davidson® diagnostic trouble codes, linking to H-D® Electrical Diagnostic Manuals for detailed troubleshooting guidance.
Real-Time Engine Data Display: Monitor live engine parameters with the customizable instrument panel interface.
Data Logging and Playback: Analyze logged data from stand-alone operation or real-time recording sessions.
AFR Data Analysis (with optional WEGO IIID): When used with the WEGO IIID wide-band oxygen sensor system (available in the Twin Scan 2/4 Complete Kit), the software can analyze Air/Fuel Ratio (AFR) data for precision tuning.

ABS Brake Bleeding Functionality

For Twin Scan II ABS units manufactured since 2014 (firmware version 3.0 or higher), ABS brake bleeding functions are available. This feature, intended for trained mechanics, allows for individual front and rear ABS brake bleeding, simplifying brake system servicing.

Optimize Performance with AFR Data Analysis and Exhaust Sniffers

When paired with the optional WEGO IIID dual-channel wide-band oxygen sensor system, the Daytona Twin Tec Twin Scan II Scan Tool 15202 becomes an invaluable tuning tool. The system logs engine data alongside real-time AFR for both cylinders. The software then displays AFR data in various formats, including Twin Cam and VRSC (V-Rod) specific layouts, making it easy to interpret and apply to engine mapping adjustments.

The software can also calculate and display volumetric efficiency (VE) correction percentages, guiding fuel adjustments. Data can be exported to Excel for seamless integration with engine mapping software, or used with Daytona Twin Tec Twin Tuner for direct VE correction data export.

For temporary AFR readings, the Twin Scan II ABS Plus kit can be used with exhaust sniffers like the JimsUSA P/N 777. This allows for AFR measurement without permanent sensor installation, ideal for tuning and diagnostics.

System Requirements and Getting Started

The Twin Scan II software is compatible with modern Windows operating systems (XP/Vista/7/8/10/11). It requires a minimum 300 MHz Pentium PC with SVGA display (1024 x 768 resolution) and a free USB port for connection using the included USB cable.

Daytona Twin Tec provides comprehensive resources to help you get started:

For deeper product information, downloading the software and instructions is highly recommended. Sample data files are included to help you explore the software’s capabilities.

Conclusion: The Daytona Twin Tec Twin Scan II – A Must-Have Tool

The Daytona Twin Tec Twin Scan II Scan Tool 15202 is an essential investment for anyone working on 2001-2014 Harley-Davidson® motorcycles. Its comprehensive features, user-friendly software, and powerful data logging capabilities make it an invaluable tool for diagnostics, maintenance, and performance tuning. Whether you are a professional mechanic or a dedicated Harley enthusiast, the Twin Scan II will empower you to keep your bike running at its best.