Jaltest (JDC304A) | Wabco (ATC/MTS) 4+4-pins OBD - 16-pins OBD2 Adapter Cable | Bus
Warranty directly via AsTools
Warranty directly via AsTools
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2 years warranty on all products
2 years warranty on all products
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Easy returns
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Professional customer service
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The Jaltest JDC304A connects the two 4-pin diagnostic connectors from Wabco bus electronics to the 16-pin OBD2 socket where your Jaltest Link diagnostic cable plugs in. Behind that socket, the cable splits into two branches, each with a black 4-pin connector featuring a locking clip and two rows of two positions. One branch carries yellow, white and blue wires, the other red, black and green. The cable measures 28 to 30 cm in length.
With both branches connected, the Jaltest software reaches two control units that have their own electronics alongside the drivetrain. These are the ATC and the ATC Coach, the bus's automatic climate control, and the MTS, the modular door control that operates the doors. This allows door faults and climate complaints to be assessed using fault codes and measured values rather than with a multimeter alone; for these two systems, coverage remains limited to reading data. The cable works with Jaltest Link V8.1 and V9 and falls under the Jaltest CV module.
ADVANTAGES
IMPORTANT NOTES
Applications and functionality
Via this dual connection you access the comfort and body electronics of the bus using Jaltest software. These are systems that operate independently of the powertrain and have their own control unit. The units listed below are covered by Jaltest's Wabco coverage.
Control units you can access
- ATC and ATC Coach, automatic climate control: The bus climate control system, covered in Jaltest under climate management.
- MTS, modular door control: The system that operates the bus doors, covered under electronic modules.
What you can do
- Read and clear fault codes: Access the fault memory of the climate or door control unit and clear it after repair.
- View measured values: The current sensor readings on the control unit, such as temperature sensors and door positions.
- View system diagnostic messages: Jaltest displays the diagnostic message that the MTS control unit generates itself.
Compatible vehicles and applications
The system is what matters, not the bus brand. This cable is designed for the Wabco ATC climate control and the Wabco MTS door control with the 4+4-pin connector. Jaltest covers these units in the range of Solaris and Solbus. It is not the bus manufacturer that determines whether the cable fits, but the connector on the control unit.
Application:
- Urban and regional buses: With a Wabco ATC climate control system on the 4+4-pin connector.
- Buses with Wabco MTS door control: The modular control system that operates the doors.
- Bus make irrelevant: Jaltest lists both systems in the coverage of Solaris and Solbus, among others.
Package contents
- 1x Jaltest (JDC304A) | Wabco (ATC/MTS) 4+4-pin OBD - 16-pin OBD2 Adapter Cable | Bus
Technical specifications
| Specification | Description |
|---|---|
| Brand | Jaltest (Cojali) |
| Reference number | JDC304A |
| Type | Adapter cable |
| Application | Wabco ATC climate control and Wabco MTS door control (bus) |
| Length | 28–30 cm |
| Interface | Jaltest Link V8.1 and V9 |
| Vehicle-side connection | 4+4-pins OBD (two black 4-pin connectors) |
| Interface-side connection | 16-pins OBD2 |
| Control units | ATC and ATC Coach (climate control), MTS (door control) |
| Segment | Bus |
| Jaltest module | Jaltest CV (commercial vehicles) |

To ensure you always have access to the latest software updates and releases for your Jaltest device, it's important that you register the correct distributor.
Only the authorized distributor can perform new software installations and updates. When you designate us as your distributor, we can handle this for you and guarantee that your device stays current and runs smoothly.
How does it work?
-
Download and complete the change form
You can find the form as a PDF file here. -
Send us the completed form
You can easily do this by email to support@astools.eu. -
We'll take care of the rest
With the form, we can notify Jaltest of the change and officially register you as our customer.






