What must the driver do to unlock the Brake Module Cover?

To unlock the Brake Module Cover, isolating the cock (often referred to as a brake isolation cock) is a crucial step. This process ensures that the brake system is safely isolated from any pressurized systems, preventing accidental activation or release of pressure while the cover is being accessed. Isolating the cock provides a safe working environment and is a standard safety procedure in maintenance tasks involving brake systems.

The other choices, while they may seem relevant in different contexts, do not specifically relate to the unlocking of the Brake Module Cover. Turning the power off, using a specialized tool, or following the manufacturer’s manual may be important procedures in a broader maintenance context, but isolating the cock directly addresses the specific requirement for ensuring safety when working on the brake system. This practice helps avoid hazards during maintenance by ensuring that all parts of the system are securely inoperable.