Jaltest (JDC203A) | Mercedes 14-pins OBD1 - 16-pins OBD2 Adapter Cable | Commercial and Work Vehicle
Warranty handled directly by AsTools
Warranty handled directly by AsTools
We handle warranty cases ourselves, quickly and without the intervention of the manufacturer. Thanks to our own parts inventory and technical expertise, we can usually help 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 way, you are assured of long-lasting quality and service.
Easy returns via Returnless
Easy returns via Returnless
Returns are easy via Returnless. Register your return online and choose your own shipping method. Return costs are at your own expense.
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 Jaltest (JDC203A) is an Adapter Cable specifically designed for older Mercedes-Benz commercial and work vehicles. The cable forms a physical connection between the vehicle-specific 14-pin OBD1 diagnostic connector and a modern diagnostic device with a standardized 16-pin OBD2 input. This enables communication with the vehicle's electronic systems.
This Adapter is intended for performing diagnosis, reading and clearing error codes, and accessing data from various electronic control modules (ECUs). By using this cable, a universal diagnostic device, such as the Jaltest Link Interface, can be connected to vehicles not equipped with the modern OBD2 port.
Application and functionality:
The JDC203A Adapter Cable facilitates communication between the vehicle and diagnostic equipment for various operations.
- Diagnostic Connection: Enables a stable and reliable data connection between the vehicle's 14-pin port and a 16-pin diagnostic device.
- Access to Vehicle Systems: Provides access to modules such as engine management, ABS, transmission, and other control units accessible via the diagnostic port.
- Error Code Management: Allows the user to read and clear diagnostic trouble codes (DTCs) after performing repairs.
Compatible vehicles and Application:
This Adapter Cable is designed for use with various older Mercedes-Benz commercial and work vehicles equipped with the round 14-pin diagnostic connector.
Mercedes-Benz:
- Actros: Models up to around 2002 (MP1)
- Atego: Models up to around 2004
- Sprinter: W901, W902, W903, W904, W905 (Models up to around 2006, depending on the version)
- Vario: Models equipped with the 14-pins port
- Vito: W638 (1996-2003)
Important: Before purchasing the product, always check the connection of your vehicle. This may vary by model and year of manufacture.
Package Contents:
- 1x Jaltest (JDC203A) | Mercedes 14-pins OBD1 - 16-pins OBD2 Adapter Cable | Commercial and Work Vehicle
Technical specifications:
| Specification | Description |
|---|---|
| Product brand | Jaltest |
| Product model | JDC203A |
| Vehicle connection side | Mercedes 14-pins (OBD1, round) |
| Adapter connection side | 16-pins (OBD2) |

To ensure that you always have access to the latest updates and software for your Jaltest device, it is important that you register the correct distributor.
Only the registered distributor can perform new software and updates. When you appoint us as your distributor, we can take care of this for you and guarantee that your device remains up-to-date without any issues.
How does it work?
-
Download and fill in the change form
You can find the form as a PDF file here. -
Send the completed form to us
This can easily be done by email to support@astools.eu. -
We take care of the rest
With the form, we at Jaltest can submit the change and officially register you as our customer.






