If the rpm signal is lost on an electronic fuel-injected vehicle, which of the following conditions will exist?
A) The ignition timing will be set to zero.
B) The PCM will go into backup mode base settings.
C) The engine will not run.
D) The vehicle will hesitate.

Question

Quizplus · Accepted Answer

Without the rpm signal, the Powertrain Control Module (PCM) cannot determine the engine speed, which is crucial for managing fuel injection and ignition timing. Therefore, the engine will not run because it cannot synchronize fuel injection and ignition without knowing the engine speed.

If the Rpm Signal Is Lost on an Electronic Fuel-Injected