Conditions for Running the DTC

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

The valve relay is commanded ON.
The ignition voltage is greater than 10 V.
Ignition ON begins the initialization of the brake system power-up self test.
Drive the vehicle at speeds greater than 16 km/h (10 MPH) to complete the active brake system test.