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Home >> Mazda >> 2024 >> 3 S >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (VIN M) >> Mass Air Flow (MAF) Sensor Inspection >> Function Inspection
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Function Inspection

  1. Connect the M-MDS to the DLC-2.
  2. Switch the ignition ON (engine off).
  3. Display the PCM PID [MAF]. (Refer to [PID/DATA MONITOR INSPECTION ] in the service information.)
  4. Compare the voltage and flow rate indications for the PID [MAF] with the standard in the table indicated below.
MASS AIR FLOW SENSOR SPECIFICATIONS (STANDARD)

MAF Remarks
V g/s {lb/min}
Approx. 1.69 0.00 {0.000} Ignition switched ON (engine off)
Approx. 1.89 1.77 {0.234} Idle (after warm up)
Approx. 2.02 5.02 {0.664} Racing (Engine speed: 2, 000 rpm)