When the ignition switch is activated, what happens to the low-pressure fuel pump?

When the ignition switch is activated, the low-pressure fuel pump typically does not engage immediately in many Yamaha vehicles. Instead, the fuel pump is designed to stay off until the engine control unit (ECU) detects that the engine is cranking or running. This approach is often taken for safety reasons, as it reduces the risk of fuel leaking or igniting during a fault condition if the engine is not running.

The fuel pump will then engage once the ECU receives the necessary signals that indicate the engine is in a state that requires fuel delivery, such as during starting or while the engine is running. This design helps ensure an efficient start and minimizes fuel wastage or potential hazards in scenarios where the engine may not need fuel immediately after ignition is turned on.

In contrast, the other choices present scenarios that do not accurately reflect this operational characteristic of the fuel pump in relation to the ignition switch.