Description
Jaltest JDC304A WABCO ATC / MTS Diagnostic Cable
The Jaltest JDC304A diagnostic cable is designed to connect compatible WABCO Automatic Traction Control (ATC) and MTS door-control systems to Jaltest diagnostic equipment. It is a specialist accessory for technicians working on supported bus and commercial vehicle electronic systems.
Unlike a general vehicle OBD cable, the JDC304A is intended for the specific connectors fitted to compatible WABCO control units. Depending on the installed system and Jaltest software coverage, it can support diagnostic communication with the relevant control unit.
Key Features
- Brand: Jaltest by Cojali
- Part number: JDC304A
- Applications: Compatible WABCO ATC and MTS systems
- Diagnostic functions: Supported traction-control and modular door-control system diagnostics
- Compatible Link versions: V8.1 and V9
- Approximate cable length: 28–30 cm
- Product type: Physical diagnostic cable
Applications
The JDC304A is intended for compatible WABCO control units, including:
- Automatic Traction Control (ATC) systems
- MTS modular door-control systems used in supported bus applications
Compatibility is determined by the control unit and its connector, not solely by the bus manufacturer or model.
Compatibility Information
Before ordering, identify the WABCO control unit and confirm that it uses the connector supported by JDC304A. These connectors may be located at the control unit, inside a switchbox or near the relevant system rather than at the vehicle’s standard OBD port.
This listing is for the JDC304A cable only. A compatible Jaltest Link interface, diagnostic software and applicable license are required separately unless explicitly included in the product listing.
Kent Farm Supplies Ltd. supplies Jaltest diagnostic cables and accessories for professional vehicle servicing.





