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Home >> Mazda >> 2021 >> CX-9 Signature >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting - Engine >> Engine Control System Operation Inspection >> Engine Oil Solenoid Valve Control System Inspection
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Engine Oil Solenoid Valve Control System Inspection

  1. Connect the M-MDS to the DLC-2.
  2. Perform the KOER self test. (See KOEO/KOER SELF TEST [PCM (SKYACTIV-G 2.5T)] .)
  3. Verify that DTC P06DB:00 or P06DC:00 is not displayed. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)] .)
  4. Inspect the engine oil pressure. (See OIL PRESSURE INSPECTION .)
    • If the engine oil pressure is not as specified, repair or replace the malfunctioning part according to the inspection results:
  5. Access the following PCM PIDs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)] .)
    • OIL_P_SOL
    • RPM
    • ECT
  6. With the engine coolant temperature at 98°C {208°F}, increase the engine speed to 4, 000 rpm or higher, and verify that the oil pressure gauge value changes when the data monitor item OIL_P_SOL value is changed from ON to OFF.
    • If the oil pressure gauge value change cannot be verified, inspect the engine oil solenoid valve. (Perform the Engine Oil Solenoid Valve Operation Inspection.) (See ENGINE OIL SOLENOID VALVE INSPECTION .)