Mode 3 (A/F sensor heater, HO2S heater, A/F sensor, HO2S, and TWC Repair Verification Drive Mode)

Verify that all accessory loads (A/C, headlights, blower fan, rear window defroster) are off.
Drive the vehicle as shown in the graph in figure. The driving condition before driving at constant speed is not specified.

Fig 1: Vehicle Speed Graph - Mode 3 (A/F Sensor Heater, HO2S Heater, A/F Sensor, HO2S, And TWC Repair Verification Drive Mode)
Courtesy of MAZDA MOTORS CORP.
Stop the vehicle and access the ON BOARD SYSTEM READINESS to inspect the Drive Mode completion status.
- If completed, RFC changes from No to Yes.
- If not completed, turn the ignition switch off, then go back to Step 2.
Access the DIAGNOSTIC MONITORING TEST RESULTS to inspect the monitor results.
- If detect values are not within specification, repair has not been completed.
Verify that no DTCs are available.