Jaltest (JDC556A) | Hyundai Robex 4-pins OBD – 16-pins OBD2 Adapter Cable | Off-road and Construction Machine
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 JDC556A connects the proprietary 4-pin diagnostic plug of the Hyundai CE 8-series to the 16-pin OBD2 connector of your diagnostic equipment. On the machine side is a rectangular plug with a light grey pin carrier, a green locking tab and a straight cable entry. The cable then runs 30 cm to a black plastic housing with the OBD2 connector.
With the cable connected, the Jaltest software reaches the central machine computer MCM. On machines with a Cummins engine, the ECM Cummins is also accessible, in a SAE J1708 and a SAE J1939 version; which one is fitted determines via which data bus the equipment operates. The cable is designed for the Jaltest Link V8.1 and falls under Jaltest OHW (Off-Highway machines).
ADVANTAGES
POINTS TO NOTE
Applications and functions
Via this connection, the Jaltest software accesses the control units of the excavators and loaders from the Hyundai CE 8-series. Which systems are present varies by model and version; the units below come from the Hyundai coverage of Jaltest OHW.
Control units you can access
- MCM: Central machine computer.
- ECM Cummins SAE J1708: Engine control, older bus.
- ECM Cummins SAE J1939: Engine control, CAN bus.
What you can do
- Fault codes: Read and clear per system.
- Measured values: View in figures and graphs.
- Maintenance: Intervals and service report.
- Additional functions: Where offered by Jaltest.
How to use it
- Finding the connection: The 4-pin plug is located in the cab.
- Connecting: Clip the JDC556A onto the plug.
- Connect the Link: Connect the OBD2 end to the Jaltest Link V8.1.
- Ignition on: Switch the ignition on without starting the engine.
- Reading out: Select Hyundai, the machine and the system.
Compatible vehicles and applications
The plug determines compatibility, not the model. This cable is for Hyundai CE 8-series excavators and loaders with the 4-pin diagnostic connector in the cab. The year of manufacture says little here; the boundary is set by the model generation.
Hyundai (CE generations):
- CE 8-series: Rectangular 4-pin connector, this cable.
- CE 9-series: Round 9-pin connector, for which the JDC572.9 is intended.
Package contents
- 1x Jaltest (JDC556A) | Hyundai Robex 4-pin OBD – 16-pin OBD2 Adapter Cable | Terrain & Construction Machinery
Technical specifications
General
- The brand of the cable or adapter. It often has to match the brand of your diagnostic tool.Brand
- Jaltest
- The type of product: a separate adapter cable, an adapter without a cable or a complete set.Product type
- Adapter cable
- The types of vehicles or machinery on which the cable can be used. This shows quickly whether it suits the vehicles entering your workshop.Vehicle types
- Construction machine
Suitable for
- The brand of diagnostic tool the cable works with. A cable for one brand usually does not fit a tester of another brand.Compatible diagnostic tool
- Jaltest
- The version of the Jaltest Link interface the cable fits. Some cables only work with the latest V9.Jaltest Link version
- Link V8.1
- The Jaltest module required to use the cable. Without the correct licence, the cable will not work.Jaltest software module
- OHW construction machinery
Connections
- The connector that plugs into the diagnostic port of the vehicle or machine. It must fit exactly.Vehicle-side connector
- 4-pin OBD
- The connector on the side of your diagnostic tool or interface. Usually a 16-pin OBD2 connector.Tool-side connector
- 16-pin OBD2
Diagnostic functions
- Shows the current sensor readings while the vehicle is running. Useful for tracing faults.View live data
- Yes
Size and weight
- The length of the cable. A longer cable gives more freedom of movement with a port that is difficult to reach.Cable length
- 30 cm
- Reference number
- JDC556A
Other specifications
- Application
- Hyundai CE 8-series excavators and loaders
- Control units
- MCM (machine computer), ECM Cummins SAE J1708 and ECM Cummins SAE J1939 (engine)
- Required for use
- Jaltest Link V8.1 with Jaltest OHW licence

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.






