Pneumatically operated pilot trailer control module with backup valve upstream from both control chambers

The pneumatic pilot-controlled trailer control module (1) has a pneumatic brake circuit with a back-up valve (7), which is controlled by an electronic control unit (13). The backup valve stays in connection with the two control chambers on the outlet side and is seen up-stream the foot brake module (14) of the two control chambers. An independent claim is also included for an electronic brake system with a pressure sensor.