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Home >> Mazda >> 2018 >> CX-9 Signature >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting - Engine Control >> Engine Control System Operation Inspection >> Drive-by-wire Control System Inspection >> Wastegate Valve Operation Inspection
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Wastegate Valve Operation Inspection

  1. Connect the M-MDS to the DLC-2.
  2. Perform the KOEO or KOER self test. (See KOEO/KOER Self Test .)
  3. Verify that DTC P0045:00 or P0046:00 is not displayed. (See On-Board Diagnostic Test .)
  4. Access the following PCM PIDs using the M-MDS. (See On-Board Diagnostic Test .)
    • WGV_ACT
    • WGV_DSD
  5. Accelerate and decelerate the vehicle, and drive at normal speed, and verify that the data monitor item WGV_ACT value changes in conjunction with the WGV_DSD value.
    CAUTION:
    • When the M-MDS is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the M-MDS using the PID/DATA MONITOR AND RECORD capturing function and inspect later.
    • While performing this step, always operate the vehicle in a safe and lawful manner.
    • If this change cannot be verified, replace the dynamic pressure turbo. (See Dynamic Pressure Turbo Removal/Installation .)