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Home >> Mazda >> 2016 >> 3 Sport, 4D Sedan, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic - Introduction - Engine Control System >> OBD-II Drive Mode >> Mode 03 (Variable Valve Timing; A/F Sensor Heater; HO2S Heater; A/F Sensor HO2S and TWC Repair Verification Drive Mode)
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Mode 03 (Variable Valve Timing; A/F Sensor Heater; HO2S Heater; A/F Sensor HO2S and TWC Repair Verification Drive Mode)

  1. Start the engine and warm it up completely.
  2. Verify all accessory loads (A/C, headlights, blower fan, rear window defroster) are off.
  3. Drive the vehicle as shown in the graph. The driving conditions before driving at constant speed are not specified.
    Fig 1: Vehicle Speed/Time Graph (TWC Repair Verification Drive Mode)
    G10959452Courtesy of MAZDA MOTORS CORP.
  4. Stop the vehicle and access the ON BOARD SYSTEM READINESS menu of GENERIC OBD-II FUNCTION to verify the OBD monitoring status.
    • If completed, the OBD monitoring status items change from non-completed to completed.
    • If not completed, switch the ignition off then repeat from Step  3.
  5. Access the DIAGNOSTIC MONITORING TEST RESULTS menu of GENERIC OBD-II FUNCTIONS to verify the monitor results.
    • If detected values are not within specification, repair has not been completed.
  6. Verify that no DTCs are displayed.
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