Mode 3 (HO2S & Heater, and TWC Repair Verification Drive Mode)

1. Access RFCFLAG PID to confirm PCM adaptive memory status.
- If RFCFLAG PID is OFF, perform Mode 1 first.
- If RFCFLAG PID is NO, start the engine and warm 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. Driving condition before the constant speed driving is not specified.
4. Stop the vehicle and access ON BOARD SYSTEM READINESS menu of GENERIC OBD II FUNCTION to inspect the completion status.
- If completed, RFC changes from NO to YES.
- If not completed, turn the ignition key off then repeat from Step 3.

5. Access DIAGNOSTIC MONITORING TEST RESULTS menu of GENERIC OBD-II FUNCTIONS to inspect the monitor results.
- If MEAS are not within specification, repair has not been completed.

6. Verify no DTCs are available.