Jaltest (JDC506A9) | Fendt 4-pin OBD – 16-pin OBD2 Adapter Cable | Agricultural Vehicle
Warranty directly via AsTools
Warranty directly via AsTools
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2 years warranty on all products
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The Jaltest JDC506A9 is the adapter connecting the 4-pin diagnostic connector of Fendt tractors to the standard 16-pin OBD2-interface of the Jaltest Link. On the vehicle side, you'll find the small 4-pin connector that plugs into the cab, and on the interface side, the 16-pin OBD2 port where you connect your Jaltest diagnostic cable. Fendt used this connector on the Favorit, Farmer, and Xylon generations.
Behind this single connection lies far more than just engine control: On the same line you'll find the GTR transmission, the EHR and EHF lift systems, the Comfort dashboard computer, and on the Xylon, the PTO shafts, differential lock, and suspended front axle. On the Favorit 900, you can also reach the engine control unit EDC MS6.4 with distributor injection pump. Agricultural vehicles have no legal OBD requirement, which is why Fendt kept this proprietary connector in use for so long. This cable falls under Jaltest AGV (agricultural vehicles).
KEY BENEFITS
IMPORTANT NOTES
Applications and Functions
Through this 4-pin connection, you can access the tractor's control units with Jaltest software. Which units are available varies by model and configuration.
Control units you can access
- Engine management EDC MS6.4, distributor injection pump: The electronic engine control of the Favorit 900 series.
- Transmission GTR: The gearbox control unit; present on virtually all 4-pin Fendt models.
- On-board computer Comfort (body computer): The central control unit for comfort and body functions.
- Hydraulics EHR (hydraulic lift) and EHF (front lift hydraulic control): The rear and front lift systems.
- Hydraulics Rexroth Valves (remote hydraulic controller): The control of external hydraulic valves on the Favorit 900.
- Electronic module Valves (valves control module): The valve control on the Farmer 400.
- PTO FPTO and RPTO: The front and rear power take-off shafts of the Xylon 500.
- Drivetrain 4WD (differential lock unit): The four-wheel drive and differential lock of the Xylon 500.
- Suspension SFA: The suspension management of the suspended front axle on the Xylon 500.
What you can do
- Read and clear fault codes: Access the fault memory of the control unit with descriptions of detected faults.
- View live data: The current sensor values monitored by the control unit, with the ability to set alarm thresholds.
Compatible vehicles and applications
The connector type is what matters, not the model. This cable works with any Fendt tractor equipped with the 4-pin diagnostic connector. Jaltest AGV covers the series listed below; check which connector is installed in your cab on-site.
Fendt:
- Fendt Favorit 900 series
- Fendt Favorit 800 series
- Fendt Favorit 700 series
- Fendt Favorit 500 series: (1993 - 1999)
- Fendt Farmer 400 series: (1999 - 2006)
- Fendt Xylon 500 series: (1995 - 2004)
- Fendt 700 Vario series: (2006 - 2023)
- Fendt 900 Vario series: (2002 - present)
Package contents
- 1x Jaltest (JDC506A9) | Fendt 4-pin OBD to 16-pin OBD2 Adapter Cable | Agricultural Vehicle
Technical Specifications
| Specification | Description |
|---|---|
| Brand | Jaltest (Cojali) |
| Reference Number | JDC506A9 |
| Type | Adapter Cable |
| Application | Fendt Favorit, Farmer and Xylon (4-pin connector) |
| Vehicle-Side Connector | 4-pin OBD |
| Interface-Side Connector | 16-pin OBD2 |
| Control Units | EDC MS6.4 (engine), GTR (transmission), Comfort (onboard computer), EHR and EHF (lifting device), Rexroth Valves and Valves (valve control), FPTO and RPTO (PTO), 4WD, SFA (suspension) |
| Segment | Agricultural Vehicle |
| Jaltest Module | Jaltest AGV (agricultural vehicles) |
| Part of Cable Set | AGV Cable Set (70002003) |
| 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.






