OBD Operation Summary for 6.7L Diesel - MotorCraftService.com

DPF Feedback Control MonitorsThe system is monitored to ensure that closed loop control of the regeneration event is initiated within a reasonableperiod of time. The monitor runs during a regeneration event and compares the time in closed loop control to thetotal time in regen. If the time in closed loop control is less than a threshold (a function of total time in regen), thena fault is indicated.If the closed loop controller is saturated at its limits and the temperature is not within the desired limit, a timer willincrement. If control is regained, the timer will decrement. At the end of the regeneration event, if this timerexceeds a threshold (a function of total time in regen), a fault is indicatedNote: Ford Motor Company 2011 diesel programs are using in-cylinder post injection to achieve regeneration, notexternal exhaust injection. The Post injection is monitored during this feedback monitor; there is no additionalmonitor for "active / intrusive injection"Monitor Summary:DTCMonitor executionMonitor SequenceSensors OKMonitoring DurationP24A0 – DPF Temperature ControlP249F – Excessive Time To Enter Closed Loop DPFRegeneration ControlDuring an active regeneration eventNoneTIA, TCO, AMP, EGT11, EGT12, EGT13, EGT14Once per regeneration eventTypical Entry Conditions:Entry condition Minimum MaximumEngine Speed 1200 rpm 3500 rpmIndicated Torque Setpoint 200 Nm 1500 NmAmbient TemperatureCoolant TemperatureBarometric Pressure-6.7 deg C70 deg C75 kPaTypical Malfunction Thresholds:If the time in closed loop operation is less than a threshold (function of total time in regen), a fault is indicated.If the difference between desired and actual temperature is greater than a threshold for a sufficient period oftime, a fault is indicated.FORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 61 OF 157