Practice question

Which component in an electronic fuel injection (EFI) system measures the volume of air entering the engine to help determine fuel delivery?

  1. The Throttle Position Sensor (TPS)
  2. The Manifold Absolute Pressure (MAP) or Mass Airflow (MAF) sensor
  3. The Oxygen (O2) sensor
  4. The Engine Coolant Temperature (ECT) sensor

Answer: B — The Manifold Absolute Pressure (MAP) or Mass Airflow (MAF) sensor

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