Mode 3 (Ho2S Heater, Ho2S, & TWC Repair Verification Drive Mode)

Perform Mode 1 first.
Verify all accessory loads (A/C, headlights, blower fan, rear window defroster) are off.
Drive the vehicle as shown in the graph. The driving conditions before driving at constant speed are not specified.

Fig 1: Verifying All Accessory Loads (A/C, Headlights, Blower Fan, Rear Window Defroster) Are Off
Courtesy of MAZDA MOTORS CORP.
Stop the vehicle and access ON BOARD SYSTEM READINESS menu of GENERIC OBD-II FUNCTION to inspect the completion status.
- If completed, the OBD monitoring status items change from non-completed to completed.
- If not completed, turn the ignition key off then repeat from Step 3.
Access DIAGNOSTIC MONITORING TEST RESULTS menu of GENERIC OBD-II FUNCTIONS to inspect the monitor results.
- If detected values are not within the specification, repair has not been completed.
Verify no DTCs are available.