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Home >> Mazda >> 2021 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Vacuum Sensor 2 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 PID BBP. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0)] .) (See PCM INSPECTION .)
  4. Compare the voltage and power brake unit vacuum indications for the PID BBP with the standard in the table indicated below.

Standard 

BBP
V kPa {kgf/cm2 , psi}
Approx. 0.79 20 {0.20, 2.9}
Approx. 1.8 47 {0.48, 6.8}
Approx. 4.0 101 {1.03, 14.6}