Jaltest (JDC406A) | FCA (SGW) 12+8-pins OBD - 16-pins OBD2 Adapter Cable | Car
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.
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Professional customer service
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The Jaltest JDC406A is the diagnostic cable for the 12+8-pin connector on the Secure Gateway (SGW) from FCA; the cable connects that port to the 16-pin OBD2 input on your Jaltest diagnostic device. On the vehicle side, the cable connects directly to the SGW module rather than the vehicle's standard OBD port. The Secure Gateway is a separate module installed in the vehicle, not located at the OBD port under the dashboard.
Once connected, the Jaltest software reaches the Secure Gateway, the security module that FCA has integrated since 2018 between the diagnostic port and the vehicle network to prevent unauthorized diagnostics. Through this module, your diagnostic equipment accesses the control units available on that specific model and variant. Jaltest is recognized by FCA as compatible diagnostic equipment and works through the manufacturer's authentication servers, not by bypassing security: Without authorization, the gateway blocks functions like component actuation and fault code clearing. This cable falls under Jaltest CV (commercial vehicles).
KEY BENEFITS
IMPORTANT NOTES
Applications and features
This connection gives you access to the Secure Gateway module, your gateway to the other control units in the vehicle.
Control units you can reach
- Secure Gateway (SGW): The security module that FCA has installed between the diagnostic connector and the vehicle network since 2018.
- The control units behind the gateway: Which ones are available varies by model and configuration; Jaltest shows what's available for each vehicle in the coverage.
What you can do
- Read fault codes: Access the fault memory of the reachable control units.
- Clear fault codes: One of the functions that the Secure Gateway blocks without authorization.
- Control components: The bidirectional functions that also require authorization.
- View live data: The current sensor readings from the control units you can access.
- Note: What's actually available depends on the model and authorization via AutoAuth.
Compatible vehicles and applications
The installed module determines compatibility, not the vehicle model. This cable is designed for FCA's Secure Gateway with the 12+8-pin connector; check on-site whether that module is in your vehicle.
Application:
- FCA vehicles from 2018 onwards equipped with the Secure Gateway security module
- 12+8-pin SGW connector: The cable follows the module, not the vehicle's OBD connector
- Authorization sold separately: Full access requires an AutoAuth subscription from the manufacturer
Package contents
- 1x Jaltest (JDC406A) | FCA (SGW) 12+8-pin OBD - 16-pin OBD2 Adapter Cable | Automotive
Technical specifications
| Specification | Description |
|---|---|
| Brand | Jaltest (Cojali) |
| Reference number | JDC406A |
| Type | Adapter cable |
| Application | FCA Secure Gateway (SGW) security module |
| Vehicle-side connector | 12+8-pin OBD |
| Interface-side connector | 16-pin OBD2 |
| Control units | Secure Gateway (SGW) and downstream control units |
| Segment | Automotive |
| Jaltest module | Jaltest CV (commercial vehicles) |
| Additionally required | AutoAuth account with annual subscription from FCA for authorized access |
| 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.






