The connection between the electronic braking system (EBS) and the trailer is interrupted. What effect could this have on the trailer when braking?

You answered correctly. When the electronic braking system (EBS) connection to the trailer is interrupted, two main effects can occur. First, the anti-lock braking system (ABS) may be deactivated because ABS relies on the electronic signal to work properly. Second, the trailer’s braking can still function using pneumatic redundancy pressure, which serves as a backup system to ensure the trailer is still braked, even though the EBS is not active. The brake lights are typically powered by a separate circuit, so their function is not directly affected by a loss of EBS connection. In summary, interruption of the EBS connection can impact ABS and cause the pneumatic backup to activate for braking, but it does not automatically mean the brake lights fail. Knowing this distinction helps you understand how modern trailer brake systems maintain some safety functions even after electronic failures.