Jaltest (JDC111A) | Knorr-Bremse (KB4-TA ABS) 7-pins OBD - 16-pins OBD2 Adapter Cable | Trailer
Warranty directly via AsTools
Warranty directly via AsTools
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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.
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Easy returns
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Professional customer service
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The Jaltest JDC111A is the adapter between the 7-pin diagnostic connector of the Knorr-Bremse KB4-TA trailer ABS system and the 16-pin OBD2 port of your Jaltest diagnostic cable. On the trailer side, there is a round black connector with a knurled locking ring, which has seven positions but only four are occupied — all four with sockets. This combination of a 7-pin housing with four sockets distinguishes this connector from the fully pin-populated 7-pin connector of the JDC103A. The cable is 28 to 30 cm long.
Beyond that coupling, the cable opens the diagnostic line to the ABS Trailer (KB4-TA) control unit. With this, the equipment reads the fault memory and wheel speed sensors per axle — you can command solenoid valves and modulators and adjust the brake system configuration. Some of these functions become available with the separate Knorr-Bremse Diagnostics module (ref. 71502007). For trailers no standardised diagnostic connector has ever been mandated, which is why this connector remains in use as long as the system is on the road. The cable works with Jaltest Link V8.1 and V9 and falls under the Jaltest CV module.
KEY BENEFITS
IMPORTANT NOTES
Applications and functionality
Using this connection, you can access the Jaltest software to diagnose the braking system of the trailer or semi-trailer — specifically the anti-lock braking system. The diagnostic connector is located on or near the ABS control unit, typically at the front of the chassis. The control unit listed below is covered by Jaltest's trailer module, with the functions available there.
Control units you can access
- ABS Trailer (KB4-TA), anti-lock braking system: The braking system this cable is designed for, including fault codes, live data, actuation and parameters.
What you can do
- Read and clear fault codes: Access the fault memory of the braking system and clear it after repair.
- View live data: Monitor the current values from connected sensors, including wheel speed sensors per axle.
- Actuate components: Directly activate solenoids and modulators to verify their operation.
- Configure parameters: Read and adjust the braking system configuration.
- Reset service reminders: Clear service notifications after maintenance has been completed.
Compatible vehicles and applications
The connector type determines compatibility, not the vehicle model. This cable fits any semi-trailer or trailer equipped with a Knorr-Bremse KB4-TA unit where the diagnostic connector is a 7-pin housing with four sockets. Since trailers have never been subject to a standardised diagnostic connector requirement, this connector also works on newer semi-trailers remains in use. The TEBS generations operate via their own dedicated connection.
Knorr-Bremse (scope):
- KB4-TA: The trailer anti-lock braking system for which this cable is designed.
- Chassis make: Not determining; the cable follows the Knorr-Bremse unit on the chassis.
- Year of manufacture: Not determining; trailers have no mandatory diagnostic connection requirement.
Package contents
- 1x Jaltest (JDC111A) | Knorr-Bremse (KB4-TA ABS) 7-pin OBD - 16-pin OBD2 Adapter Cable | Trailer
Technical specifications
| Specification | Description |
|---|---|
| Brand | Jaltest (Cojali) |
| Reference number | JDC111A |
| Type | Adapter cable |
| Application | Knorr-Bremse KB4-TA trailer ABS |
| Length | 28 to 30 cm |
| Interface | Jaltest Link V8.1 and V9 |
| Vehicle-side connection | 7-pin OBD (round connector with seven positions, four populated with sockets) |
| Interface-side connection | 16-pin OBD2 |
| Control units | ABS Trailer (KB4-TA) |
| Segment | Trailer |
| Jaltest module | Jaltest CV (commercial vehicles) |
| Optional addition | Knorr-Bremse Diagnostics module (ref. 71502007) for full functionality |
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.
