JDiag M300 | Diagnostic Tool | Motorcycle
Warranty directly via AsTools
Warranty directly via AsTools
We handle warranty cases ourselves, quickly and without involving the manufacturer. Thanks to our own parts inventory and technical expertise, we can usually assist you immediately. Only in exceptional cases do we still send the product to the supplier.
2 years warranty on all products
2 years warranty on all products
All our products come with a 2-year factory warranty. This ensures you long-lasting quality and service.
Easy returns
Easy returns
You can easily request your return through your account. We will send you the return label by email. Return shipping costs are your responsibility.
Professional customer service
Professional customer service
Our experts are ready to help you quickly and professionally, both online and in our physical store. Questions? Feel free to contact us!
The JDiag M300 is a handheld diagnostic device for motorcycles with a 5.0-inch color screen and support for electronic fuel injection systems from almost all major manufacturers. The device features an SD card slot for storage and updates, a dedicated CAN-bus interface, and displays dynamic data in both numerical and waveform forms. The license is lifetime, so no periodic renewals are required.
The diagnostic device reads live data, shows ECU information, and displays stored error codes and real-time parameters such as RPM, battery voltage, and throttle position. Common procedures like injectors, ignition, coils, and fuel pump are included in the device, allowing the technician to follow them step-by-step. Thanks to the new generation processing chips, the reading and detection speed are higher than previous models.
ADVANTAGES
IMPORTANT NOTES
Diagnostic functions
The JDiag M300 supports diagnostic functions for reading and analyzing electronic systems on motorcycles.
- Read system information: Shows identification data and ECU information of the connected vehicle system.
- Read datastream: Displays live data such as RPM, battery voltage, and throttle position in numerical form and waveform.
- Read error codes: Reads stored and active error codes from the ECU memory.
- Clear fault codes: Removes stored fault codes after repairs are performed.
- Freeze frame data: Displays a snapshot of sensor values at the moment a fault code was stored.
- ABS system test: Diagnosis of the Brake system including bleeding function.
Service and maintenance functions
The JDiag M300 supports multiple service and maintenance functions for motorcycles. Available functions may vary by vehicle brand, model, and year.
Engine and drivetrain
- Service interval reset: Resetting maintenance indicators after service completion.
- CO adjustment: Adjusting the CO value at idle speed for correct emission levels.
- Throttle position reset: Teaching the throttle's base position after cleaning or replacement.
- Adaptation values reset: Clearing learned values in engine management so the system can recalibrate.
- Air-fuel ratio reset: Restoring mixture control to factory settings.
Brake and stability systems
- ABS Brake system bleeding: Procedure for bleeding the ABS circuit after work on the Brake system.
Special features and capabilities
In addition to diagnosis and service, the device offers additional functions for workshop use.
- Battery test: Battery condition check via the included Battery Test Cable.
- Troubleshooting guide: Built-in procedures for common repairs on injectors, ignition, coils, and fuel pump.
- Print test results: Ability to print diagnostic results for record keeping.
- SD card storage: Data storage and software updates via an SD card.
- CAN-bus interface: Reserved CAN-bus connection for communication with modern motorcycle systems.
Supported vehicle brands
The JDiag M300 supports a wide range of motorcycle brands, divided across multiple regions.
- European: Adiva, Aprilia, Benelli, BMW, Brixton, Ducati, KTM, Piaggio, Triumph, Vespa
- Asian: Aeon, Bajaj, Hartford, Honda, Hyosung, Kawasaki, Kymco, Modenas, PGO, Royal Enfield, Suzuki, SYM, Yamaha
- American: Arctic Cat, Bombardier, Harley-Davidson
- Chinese: CFMoto, Yiben
License information
The JDiag M300 comes with a lifetime license. Software updates can be installed via SD card to add new vehicles and features to the device.
- License period: Lifetime, without periodic renewal.
- Software updates: Updates can add new vehicles and features.
- Extended features: Some features may depend on the installed software version.
- After license expiration: Not applicable due to the lifetime license.
Package Contents
- 1x JDiag M300 Diagnostic Tool
- 1x MOTO-01 main cable
- 1x MOTO-02 battery test cable (power cable)
- 1x MOTO-03 OBD2 16-pin cable
- 1x MOTO-04 universal jumper cable
- 1x MULTI-05 Adapter for Yamaha 3p/4p and Honda 4-pin
- 1x MULTI-06 Adapter for BMW 10-pin
- 1x MULTI-07 Adapter for Ducati 4-pin
- 1x MULTI-08 Adapter for Harley-Davidson 4p/6p
- 1x MULTI-09 Adapter for Suzuki 1-6pin, Suzuki 2-6pin, Euro5-6pin, Vespa/Piaggio/Aprilia 3-pin
- 1x MULTI-10 Adapter for Kawasaki 1-8pin, 2-4pin, 2-6pin, 3-4pin
- 1x MULTI-11 Adapter for Kawasaki 4-6pin, 4-4pin, 6-4pin
- 1x MULTI-12 Adapter for Hartford 6-pin, Kymco 3-pin, PGO 6-pin, SYM 3-pin
- 1x MULTI-13 Adapter for Aeon/Benelli 6-pin, KTM 6-pin
- 1x USB cable
- 1x Storage case with zipper
- 1x User manual
Technical specifications
| Specification | Description |
|---|---|
| Brand | JDiag |
| Model | M300 |
| Application | Diagnostic Tool for motorcycles |
| Screen | 5.0-inch color screen |
| Operation | Physical buttons (F1, F2, F3, navigation keys, OK, ESC) |
| Storage | SD card support for data and updates |
| Interface | Reserved CAN-bus interface, USB connection |
| License duration | Lifetime |
