Jaltest (JDC541A) | Hidromek 16-pins OBD – 16-pins OBD2 Adapter Cable | Off-road and Construction Machine
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 Jaltest JDC541A is the adapter cable connecting the 16-pin diagnostic port on Hidromek earthmoving equipment to the 16-pin OBD2 connector of your Jaltest diagnostic cable. On the vehicle side, it features the manufacturer-specific 16-pin connector, which is not interchangeable with a standard car OBD2 plug; on the interface side, it has the 16-pin OBD2 input for the Jaltest Link.
Behind this single connection lies the control electronics of the Isuzu powertrain: The common-rail engine control unit 4HK1/4JJ1, available in both CAN and K-Line versions, and on machines equipped with SCR, the AdBlue/DEF aftertreatment system. With the CAN version of the engine control unit, additional functions are available; with the K-Line version, they are not. Especially for AdBlue faults and power complaints, that's the access point you need. This cable falls under Jaltest OHW (Off-Highway machines).
KEY BENEFITS
IMPORTANT NOTES
Applications and functionality
Using this connection, you can access the machine's control units with Jaltest software. Which systems are available varies by series and model.
Control units you can access
- 4HK1, 4JJ1 (CAN) Isuzu, Electronic Diesel Control, Common Rail: The common-rail engine control via CAN communication, including additional functions.
- 4HK1 (K Line) Isuzu, Electronic Diesel Control, Common Rail: The same engine family via K-Line communication.
- AdBlue/DEF Isuzu, Exhaust gas treatment system: Exhaust aftertreatment control on machines equipped with SCR.
What you can do
- Read and clear fault codes: Access the control unit's fault memory with detailed descriptions of detected faults.
- View live data: Real-time sensor readings connected to the control unit, displayed as values and graphs.
- Check service records: View maintenance intervals and completed service work on the machine, with a service report.
- Perform additional functions: Available on the Isuzu engine control via CAN.
Compatible vehicles and applications
The connector type determines compatibility, not the model.This cable fits any Hidromek machine with the manufacturer's proprietary 16-pin diagnostic connector. Jaltest OHW covers the series listed below; verify which connector your machine has on-site before ordering.
Hidromek:
- HMK 100 LC Series (tracked excavator)
- HMK 100 W Series (wheeled excavator)
- HMK 200 LC Series (tracked excavator)
- HMK 200 W Series (wheeled excavator)
- HMK 300 LC Series (tracked excavator)
- HMK 400 LC Series (tracked excavator)
- HMK 600 Series (wheel loader)
- HMK 600 MG Series (grader)
Package contents
- 1x Jaltest (JDC541A) | Hidromek 16-pin OBD – 16-pin OBD2 Adapter Cable | Off-Highway & Construction Equipment
Technical Specifications
| Specification | Description |
|---|---|
| Brand | Jaltest (Cojali) |
| Reference Number | JDC541A |
| Type | Adapter Cable |
| Application | Hidromek excavators, wheel loaders and graders |
| Vehicle-side Connection | 16-pin OBD |
| Interface-side Connection | 16-pin OBD2 |
| Control Units | 4HK1/4JJ1 Isuzu Electronic Diesel Control (CAN and K Line) and AdBlue/DEF Isuzu |
| Segment | Off-Highway & Construction Equipment |
| Jaltest Module | Jaltest OHW (Off-Highway Machines) |
| Required to Use | Jaltest Link with valid software license |

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.






