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Home › Mazda › 2016 › CX-3 Touring, AWD › Repair and Diagnosis › Engine Performance › System › On-Board Diagnostic - Introduction › OBD-II Drive Mode › Mode 03 (Variable Valve Timing, A/F Sensor, HO2S and TWC Repair Verification Drive Mode)

Mode 03 (Variable Valve Timing, 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 defogger) are off.
  3. Drive the vehicle as shown in the graph.
    Fig 1: A/F Sensor, HO2S And TWC Repair Verification Drive Mode Vehicle Speed Graph
    G10968339Courtesy 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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