Mode 4 (EVAP System Repair Verification Drive Mode)

NOTE: Mode 4 can be performed regardless RFC FLAG condition.

1. Verify all following PIDs are within the following specifications. All PIDs must be within specifications before engine is started to initiate the EVAP system test.
- ECT is -10° C {14° F} - X° C {X° F} (X, the ECT upper limit, is determined according to the barometric pressure as shown in the graph below.)
- IAT is -10 - -55° C {-50 - -131° F}.
- BARO is 72.0 kPa {540 mmHg, 21.3 inHg}.
- FTL V is 0.5 - 2.5 V.

2. Verify all accessory loads (A/C, headlights, blower fan, rear window defroster) are off.
3. Start the engine and race it at 3,500 rpm to warm up completely.




4. Drive the vehicle as shown in the graph.

5. Stop the vehicle and access to ON BOARD SYSTEM READINESS menu the GENERIC OBD-II FUNCTIONS to check the Drive Mode completion status.
- If completed, RFC changes from NO to YES.
- If not completed, turn the ignition key off, then repeat Steps 2 to 4 at least one more time.

6. Access the DIAGNOSTIC MONITORING TEST RESULTS menu of GENERIC OBD-II FUNCTIONS to check the monitor results If MEASs" are not within specification, repair has not been completed.
7. Verify no DTCs are available.