Which statement about door lock actuation is false?

• A. Central vacuum pump can activate some door locks
• B. A relay can send current to the actuator for some doors
• C. Both statements are true
• D. Neither statement is true

Answer: (D)

Door lock actuation can be electric or vacuum-driven, depending on the vehicle design. A central vacuum pump is not a standard source used to operate door locks in typical automotive systems; vacuum for locks usually comes from the engine vacuum or a vacuum reservoir, not a dedicated central pump. So predicting that a central vacuum pump can activate door locks isn’t a reliable description of how door locks are powered.

Similarly, while some electric door lock systems use a relay to power the actuator, not all doors rely on this path in every design. Vacuum-operated locks don’t use electrical current to move the lock, and in some electric systems the actuation may be controlled directly by switches or modules without a separate relay in every case. Because these mechanisms vary by vehicle, neither statement can be considered universally true.

Therefore, the statement that fits best as false is that neither of those general claims applies across all door lock systems.