JDIAG M400 PRO PRO
Professional Motorcycle Diagnostics Reimagined
The most comprehensive intelligent motorcycle diagnostic tool on the market, engineered for professional mechanics and passionate enthusiasts who demand precision, versatility, and reliability.
Industry-Leading Specifications
Built with premium components and advanced technology for maximum performance
Powerful Android System
Quad-core high-speed processor for lightning-fast diagnostics and seamless performance.
Premium 8" HD Touchscreen
Crisp 1280×800 resolution display for crystal-clear visualization of all diagnostic data.
Generous 8GB Storage
Ample space for all your diagnostic data, customer records, and repair history.
Wireless WIFI Updates
Stay current with seamless wireless updates for new features and expanded vehicle coverage.
Multi-Language Support
Unlike the English-only M400 Online version, the M400 PRO offers comprehensive language options including English and local languages, making it the perfect tool for international workshops and technicians.
Unmatched Brand Coverage
The M400 PRO supports an industry-leading 79 motorcycle brands from around the world
Global Coverage
American
Harley-Davidson, Indian, Victory
European
BMW, Ducati, KTM, Triumph, Aprilia
Asian
Honda, Yamaha, Kawasaki, Suzuki
Chinese
All major Chinese manufacturers
Featured Brands
Brand Coverage Comparison
The M400 PRO supports 50 more motorcycle brands than the M300 and a wider range of international manufacturers than the standard M400 Online.
Professional-Grade Diagnostics
Transform your workflow with comprehensive diagnostic capabilities
System Information
Access critical ECU data instantly including:
"The system information access alone saves me hours of research time." — Professional Technician
Fault Code Management
Complete fault code diagnostics:
"The troubleshooting guidance for each code has improved our first-time fix rate dramatically." — Workshop Manager
Live Data Stream
Monitor critical parameters in real-time:
"Being able to see all parameters simultaneously has changed how I diagnose complex issues." — Master Technician
ABS System Testing
Comprehensive ABS diagnostics:
"ABS bleeding with the M400 PRO is easier than using OEM equipment." — Brake Specialist
Battery Diagnostics
Complete battery system analysis:
"The battery diagnostics have helped us prevent breakdowns by identifying weak batteries before they fail." — Service Manager
Special Functions
Advanced service procedures:
"Special functions that normally require dealer-only tools are now available in our independent shop." — Shop Owner
Performance Enhancement Tools
Take your service offerings to the next level
Exclusive ECU Programming
One of the M400 PRO's most powerful exclusive features is advanced ECU programming and remapping capabilities. Unlike other models in the JDIAG lineup, the M400 PRO gives you the ability to:
Fine-tune fuel maps for improved performance
Adjust ignition timing for better power delivery
Optimize throttle response for smoother operation
Install manufacturer updates and patches
This professional-grade functionality is typically only available through manufacturer-specific tools at authorized dealerships.
Injector Testing & Cleaning
The M400 PRO provides specialized injector diagnostic and maintenance capabilities:
"Injector testing has become a standard part of our service packages because it's so easy with the M400 PRO."
Signal Testing & Simulation
Powerful signal analysis and component testing tools:
"The signal simulation lets us test components without replacing parts unnecessarily - huge time and cost savings."
Additional Performance Tools
CO Idle Adjustment
Fine-tune idle CO levels for optimal performance and emissions compliance.
Adaptation Resets
Reset adaptive learning values after repairs for proper system operation.
Security Access
Dealer-level security access for protected functions and settings.
Workshop Efficiency Features
Streamline your repair process and enhance productivity
Comprehensive Maintenance Assistant
Step-by-step guidance for complex repair procedures:
The Maintenance Assistant is especially valuable for training new technicians and handling unfamiliar motorcycle models.
Interactive Circuit Diagrams
Visualize electrical systems with clarity:
Electrical diagnostics are faster and more accurate with the ability to zoom, highlight, and trace specific circuits.
Complete Data Management
Organize and leverage your diagnostic data:
Build a comprehensive service history for each customer's motorcycle to track issues over time and improve customer retention.
Diagnostic Reporting
Generate professional reports for customers:
Professional reports build customer trust and make it easier to explain needed repairs with clear documentation.
The Professional's Choice
See how the M400 PRO compares to other JDIAG models
"Unlike the basic M300 model or the online-only M400, the M400 PRO offline version delivers maximum brand coverage, advanced ECU programming, language flexibility, and professional-grade reliability built for daily workshop use."
Which JDIAG Model Is Right For You?
M300
For basic repair shops focusing on common motorcycle brands with standard diagnostic needs.
M400 PRO
For professional workshops requiring comprehensive brand coverage, ECU programming, and advanced features.
M400 Online
For shops focused primarily on Chinese motorcycles requiring constant internet connection.
Ready for Every Diagnostic Challenge
Whether you're running a busy repair shop or offering specialized motorcycle services, the M400 PRO delivers the comprehensive capabilities you need in one rugged, portable device.
General Repair Shops
The broad brand coverage and comprehensive features make the M400 PRO ideal for shops that service a diverse range of motorcycle makes and models.
Specialty Workshops
For boutique shops specializing in European or high-performance motorcycles, the M400 PRO provides the advanced functions typically only available with dealer-specific tools.
Performance Tuners
The exclusive ECU programming capabilities make the M400 PRO essential for shops offering performance tuning, engine modifications, and custom bike builds.
Elevate Your Diagnostics. Enhance Your Reputation. Exceed Your Customers' Expectations.
The JDIAG M400 PRO represents the pinnacle of motorcycle diagnostic technology, bringing professional-grade capabilities to your workshop at a fraction of the cost of multiple specialized tools.
Diagnose issues faster and more accurately
Expand your service capabilities
Increase customer satisfaction with detailed reports
Improve technician efficiency and productivity
Ready to Transform Your Motorcycle Service?
Join thousands of professional technicians worldwide who rely on the JDIAG M400 PRO for precision diagnostics and advanced service capabilities.
What's Included
Warranty & Support
Shipping & Delivery
Limited time offer: Save $400 + Free Shipping
Payment Options
Financing available: As low as $166/month
Volume discounts for multiple units
Not quite ready to order? Learn more about the M400 PRO:
Download Specs
Watch Demo Video
Schedule Live Demo
What Professionals Say
Hear from technicians who rely on the M400 PRO every day
James Wilson
Master Technician, Precision Motorcycle
"The M400 PRO has replaced three different diagnostic tools in our shop. The ECU programming capability alone has opened up new service opportunities we couldn't offer before. It's become the go-to tool for every motorcycle that comes through our doors."
Maria Rodriguez
Owner, European Motorcycle Specialists
"As someone who specializes in European bikes, I needed a tool that could handle everything from Ducati to BMW to Triumph. The M400 PRO has exceeded my expectations. The multiple language support is particularly helpful for our multilingual technicians."
David Chen
Technical Director, Performance Cycle Works
"For our performance shop, having the ability to modify ECU settings is critical. The M400 PRO's programming capabilities have allowed us to fine-tune fuel maps and optimize performance on almost every brand we service. The ROI on this tool was immediate."
Frequently Asked Questions
Everything you need to know about the M400 PRO
How often does the M400 PRO receive software updates?
The M400 PRO receives quarterly major updates with new features and expanded vehicle coverage. Minor updates and bug fixes are released as needed, typically monthly. All updates are available via WiFi and are included free for the first year.
What's the difference between the M400 Online and the M400 PRO?
The M400 PRO is our premium offline model that includes advanced ECU programming features, multi-language support, and broader brand coverage. Unlike the Online version which requires constant internet connection, the PRO model works independently without an internet connection after initial setup, making it ideal for workshops in any location.
Can I use the M400 PRO for multiple motorcycles and brands?
Yes, the M400 PRO is designed for multi-brand diagnostic work. With support for 79 motorcycle brands, you can use a single tool for virtually any motorcycle that comes into your shop. The package includes 16 different adapters to ensure compatibility with different diagnostic ports across manufacturers.
Is training provided with purchase?
Yes, each M400 PRO purchase includes access to our online training portal with comprehensive video tutorials and documentation. We also offer optional live training sessions and can arrange personalized training for your team. The intuitive interface design means most technicians can be productive immediately with minimal training.
What happens after the first year of free updates?
After the first year, you can purchase an annual update subscription that provides all software updates, new vehicle coverage, and enhanced features. The subscription costs $299/year, which is significantly less than purchasing individual updates. Even without updates, your M400 PRO will continue to function with all its current capabilities.
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JDIAG M400 PRO
The ultimate intelligent motorcycle diagnostic solution for professionals who accept nothing less than excellence.