Question

mass air flow (maf) sensors are being discussed.

• autozoner a says: \the maf sensor gives the computer air density, temperature and altitude data.\
• autozoner b says: \the computer uses the maf sensor signal to maintain the proper air/fuel ratio.\

who is correct?
○ autozoner a
○ autozoner b
○ both autozoners
○ neither autozoner

Explanation:

• MAF sensors measure the mass of air entering the engine, not air density, temperature, or altitude data (those are handled by other sensors like MAP, IAT, or barometric sensors), so AutoZoner A is incorrect.
• The engine control unit (ECU) uses the MAF sensor's signal to calculate the correct amount of fuel to inject, maintaining the proper air/fuel ratio, so AutoZoner B is correct.

Answer:

AutoZoner B