Mode 4 - EVAP System Repair Verification Drive Mode
NOTE:
- If Mode 4 can not be performed because it is impossible to drive vehicle under MODE 4 condition, perform evaporative system test procedure as an alternative. See FUEL EVAPORATION (EVAP) SYSTEM - EXCEPT MPV under EMISSION SYSTEMS & SUB-SYSTEMS in SYSTEM & COMPONENT TESTING - MIATA, MILLENIA, MPV, PROTEGE, PROTEGE5 & 626 article.
- Mode 4 can be performed regardless of RFCFLAG status.
- Verify than all following PIDs are within specification before engine is started to initiate evaporative monitoring:
- Barometric pressure (BARO) is 21.3 IN. Hg (72 kPa).
- Intake Air Temperature (IAT) is 14-140°F (-10-60°C).
- Fuel Tank Level (FTL) PID is .24-2.0 volts.
- Engine Coolant Temperature (ECT) is 14-95°F (10-35°C).
- Verify all accessory loads (A/C, headlights, blower fan, rear window defroster) are off.
- Start engine and race it at 3500 RPM until reaches normal operating temperature. Drive vehicle as shown in the graph. See Fig 1.
- Stop vehicle and access ON BOARD SYSTEM READINESS menu of GENERIC OBD-II FUNCTIONS to inspect completion status:
- If completed, RFC change from NO to YES.
- If not completed, turn ignition key off and repeat test from step 3).
- Access DIAGNOSTIC MONITORING TEST RESULTS menu of GENERIC OBD-II FUNCTIONS to inspect monitor results:
- If MEAS values of 10:21:00 and 10:22:00 are within specification, repair is completed.
- If MEAS values of 10:21:00 and 10:22:00 are not within specification, repair is not completed.
- Verify no DTCs are available.