What is a possible reason for low fuel volume in a vehicle?

Low fuel volume in a vehicle can often be attributed to high circuit resistance, which affects the operation of the fuel pump. When there is high resistance in the electrical circuit that powers the fuel pump, it can reduce the voltage supplied to the pump, thereby causing it to operate inefficiently or not at all. This insufficient operation results in low fuel volume being delivered to the engine, which can lead to performance issues such as poor acceleration or engine stalling.

Additionally, while system voltage at the electrical connector is important for proper fuel pump operation, it is the high circuit resistance that directly prevents the pump from receiving the necessary voltage to function optimally. Therefore, high circuit resistance is a more direct cause of low fuel volume compared to just low system voltage alone.

In summary, the presence of high circuit resistance effectively hinders the fuel pump's ability to perform its function, leading to a decrease in fuel volume reaching the engine.