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Home >> Mazda >> 2021 >> CX-9 Signature >> Repair and Diagnosis >> Engine Mechanical >> Engine Lubrication System >> Oil Pressure Inspection

Oil Pressure Inspection

  1. Connect the M-MDS to the DLC-2.
  2. Start the engine and warm it up.
  3. Select the engine hydraulic pressure (PID: EOP) and the engine speed (PID: RPM) using the M-MDS data monitor function.
  4. Verify the engine hydraulic pressure (PID: EOP) value while the engine maintains a constant speed.
    • If not within the specification, determine the malfunctioning location referring to the following DTCs "Possible Cause" and repair or replace the applicable part.
      • P0524:00 (Engine oil pressure too low)
      • P06DD:00 (Engine oil pressure switch control circuit high input)
      • P06DE:00 (Engine oil pressure switch control circuit low input)
      NOTE:
      • The oil pressure can vary with oil viscosity, temperature, and engine speed.

      Oil pressure (reference value) [oil temperature: 80-90°C {176-194°F}, coolant temperature: 80-90°C {176-194°F}] 

      Lo: 135-165 kPa {1.38-1.68 kgf/cm2 , 19.6-23.9 psi} [1, 500 rpm]

      Hi: 225-275 kPa {2.30-2.80 kgf/cm2 , 32.7-39.8 psi} [4, 500 rpm]