Jaltest (JDC103A) | Wabco/Knorr-Bremse 7-pins - 16-pins OBD2 adapter cable | Trailer

The Jaltest JDC103A is a specialist diagnostic tool and much more than a standard adapter cable. It is specially designed for direct communication with the 'brains' (the ECU) of the brake and air suspension system of Wabco and Knorr-Bremse – the two main trailer brands. This cable connects the specific round 7-pin diagnostic port on the control unit with the Jaltest system. It is the solution for difficult faults, for example when a trailer has no power via the normal connector or in case of a hard-to-find electronic problem. You bypass all other wiring and communicate directly with the trailer ECU, allowing you to quickly and confidently find the cause of the fault.

Not only is the cable functionally a great solution, it is also built for the heavy work in the workshop. The robust 7-pin connector often has a locking mechanism that ensures a firm and stable connection. The biggest advantage is the efficiency: this one cable works for both Wabco and Knorr-Bremse. This not only saves a workshop costs (no need for two separate cables), but also valuable time – because there is no need to switch. This makes the JDC103A one of the most valuable and smart investments in a Package Contents.

Application and functionality:

The main purpose of this cable is to enable a direct and in-depth diagnosis of Wabco and Knorr-Bremse systems. You use this cable to communicate directly with the ECU of the brake system or air suspension system. This is especially necessary if there is no power on the standard trailer connector, or if you want to rule out that the problem lies in the trailer control unit.

• Brake system diagnosis: Full access to Wabco and Knorr EBS and ABS modules.
• Air suspension diagnosis: Supports reading and calibration of ECAS air suspension units.
• Read and clear fault codes: Detect DTCs and clear fault messages after repair.
• Set parameters: Adjust settings in the trailer ECU.
• Perform calibrations: Reset ride height, reference points, and other system parameters.

Suitable vehicles and applications:

• Vehicle category: Trailers, semi-trailers, trailers
• Suitable system brands: Wabco and Knorr-Bremse
• Applications: Diagnosis of EBS, ABS, and ECAS systems
• Connector requirement: Round 7-pin diagnostic port at the EBS modulator or air suspension ECU

Package Contents:

• 1x Jaltest JDC103A Wabco/Knorr-Bremse 7-pin to 16-pin adapter cable

Technical specifications: