OBD Operation Summary for 6.7L Diesel - MotorCraftService.com

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PARTICULATE MATTER (PM) FILTER MONITORINGDPF Filter Efficiency and Missing Substrate MonitorsThe DPF is monitored to ensure no leaks have developed in the substrate and that the filter has not beenremoved. Preconditioning is required for DPF monitoring such that the distance traveled is greater than 5000 km,which allows the DPF to cycle through several regeneration events before the monitor becomes active.The DPF Filter Efficiency monitor compares the calculated restriction of the DPF to a threshold which is a functionof volumetric exhaust flow. A filtering routine is used where a counter will increment when the measured value isbelow the threshold and decrement when above the threshold (clipped to a minimum of 0). When the counterexceeds a threshold, a fault is indicated.The DPF Missing Substrate monitor operates in much the same way. The only exception is that instead of DPFrestriction, the measured pressure upstream of the DPF is compared to a threshold which is a function ofvolumetric exhaust flow.Monitor Summary:DTCsMonitor executionMonitor SequenceSensors OKMonitoring DurationP2002 – Diesel Particulate Filter Efficiency Below ThresholdP244A – Diesel Particulate Filter Differential Pressure Too LowP2002: Once per trip after a DPF regenerationP244A: Continuous while meeting entry conditionsNoneEGT, DPFP, CKP, ECT (P0117, P0118), EGT13 EGT14, MAF,IAT90 secTypical Entry Conditions:Entry condition Minimum MaximumExhaust volumetric flowNot a regeneration eventIntake air temperatureEngine coolant temperature400 m3/hour (P2002)300 m3/hour (P244A)-20 deg C50 deg C2400 m3/hourFORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 58 OF 157
Typical Malfunction Thresholds:DPF Efficiency Test: (P2002)Normalized restriction (based primarily on pressure measurement) is below a threshold (function of engineexhaust volumetric flow) for 90 seconds. Typical values for thresholds:Flow (m^3/hr) 300 600 900 1200 1500 1800 2100 2500Restriction 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40DPF Differential Pressure Test: (P244A)Measured DPF inlet pressure is below a threshold (function of engine exhaust volumetric flow) for 90 seconds.Typical values for threshold:Flow (m^3/hr) 300 600 900 1200 1500 1800 2100 2500Pressure (kPa) 7.99 15.02 27.94 47.13 72.80 104.94 143.45 204.61DPF Frequent Regeneration MonitorThe DPF Frequent Regeneration monitor calculates the distance between aftertreatment regeneration events.The distance between successive regeneration events is calculated and the average distance is calculated for thetwo most recent regeneration events. If the distance between regen events is below a threshold, a fault isindicated.Monitor Summary:DTCMonitor executionMonitor SequenceSensors OKP2459 – Diesel Particulate Filter Regeneration FrequencyOnce per trip during which a DPF regeneration occursNoneDPFPTypical Entry Conditions:Entry condition Minimum MaximumNot in “degraded regen” mode due toDPF pressure sensor errorTypical Malfunction Thresholds:A fault is stored when the average distance between regeneration events is below a threshold. Typicalthreshold is 27 km.FORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 59 OF 157
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2013 MY OBD System OperationSummary
Page 3 and 4:
Cam and Crank Sensor: .............
Page 5 and 6:
Introduction - OBD-II and EMDOBD-II
Page 7 and 8: Comprehensive Component MonitorGlow
Page 9 and 10: System Schematic 6.7L Chassis Certi
Page 11 and 12: The dynamometer certified applicati
Page 13 and 14: NON-METHANE HYDROCARBON (NMHC) CONV
Page 15 and 16: OXIDES OF NITROGREN (NOx) CONVERTIN
Page 17 and 18: Selective Catalyst Reduction Feedba
Page 20 and 21: Misfire Monitor Operation:DTCsMonit
Page 22 and 23: Fuel Rail Pressure ( FRP ) Rational
Page 24 and 25: Fuel Temperature Sensor Circuit Che
Page 26 and 27: Fuel Pressure Control Valve (PCV) M
Page 28 and 29: Fuel Injector Driver Circuit Monito
Page 30 and 31: Injector Code Missing/Invalid:Injec
Page 32 and 33: Injection Timing / Injection quanti
Page 34 and 35: Feedback control:Fuel Balancing Con
Page 36 and 37: VoltageNominal Voltage Calibration:
Page 38 and 39: EXHAUST GAS SENSOR MONITORAir-Fuel
Page 40 and 41: The NOx sensor is primarily used to
Page 42 and 43: percent O2P0133 (O2 slow response)
Page 44 and 45: EXHAUST GAS RECIRCULATION (EGR) SYS
Page 46 and 47: EGR Cooler/ECB Entry Conditions (Ov
Page 48 and 49: EGR System Slow ResponseSlow respon
Page 50 and 51: Mass Airflow Closed-loop Control Li
Page 52 and 53: Note: this monitor also serves to m
Page 54 and 55: Functional Overboost MonitoringThe
Page 56 and 57: Threshold Underboost MonitoringThe
Page 60 and 61: DPF Incomplete Regeneration Monitor
Page 62 and 63: DPF Restriction MonitorThe DPF is m
Page 64 and 65: Mass Air Flow Sensor Functional Che
Page 66 and 67: Warm-up profiles with nominal therm
Page 68 and 69: Primary Coolant Temp Dynamic Monito
Page 70 and 71: COLD START EMISSION REDUCTION STRAT
Page 72 and 73: FBC operates in closed-loop control
Page 74 and 75: Engine SensorsAir Temperature Ratio
Page 76 and 77: Ambient Air Temperature (AAT) Senso
Page 78 and 79: Charge Air Cooler Temperature (CACT
Page 80 and 81: EGR Cooler Downstream Temperature R
Page 82 and 83: Barometric Pressure and Manifold Ab
Page 84 and 85: Turbine Upstream Pressure Sensor Pl
Page 86 and 87: EGR Valve Position SensorAnalog inp
Page 88 and 89: Engine Coolant & Engine Oil Correla
Page 90 and 91: Engine Oil Temperature (EOT) Sensor
Page 92 and 93: Typical Camshaft and Crankshaft Sen
Page 94 and 95: Typical Fan and Fan Speed Sensor Ch
Page 96 and 97: MAF Rationality CheckA rationality
Page 98 and 99: Mass Air Flow Sensor Plausibility C
Page 100 and 101: Reductant Pressure Sensor Signal Ra
Page 102 and 103: DEF System Pressure ControlDEF pres
Page 104 and 105: Reductant Tank Level Sensor Circuit
Page 106 and 107: Reductant Tank Temperature Circuit
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Exhaust Gas Temperature Sensor Rati
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Exhaust Gas Temperature Rationality
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Diesel Particulate Filter Pressure
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Typical Actuator Jammed Valve Entry
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ECB Valve Actuator Signal Range Che
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Reductant Pump MotorThe Reductant P
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Reductant Pump Motor Circuit Checks
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Reductant Dosing Valve Circuit Chec
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Reverting ValveIn order to reverse
Page 126 and 127:
Urea HeatersAqueous urea water solu
Page 128 and 129:
Additional plausibility check for h
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Engine Control Unit (ECU) Monitor O
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Typical Engine Control Unit (ECU) M
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Lack of Communication Codes:CAN Com
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Glow PlugsThe diesel engine uses gl
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Glow Plug Circuit Open Load Check O
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Glow Plug Circuit Resistance Out of
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Miscellaneous ECU Errors:VID Block
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Most vehicle applications no longer
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Transmission Fluid Temperature Sens
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Shift Solenoid Functional Check Ope
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Pressure Control Solenoid Check Ope
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Transmission OutputsShift Solenoids
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On Board Diagnostic ExecutiveThe On
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I/M Readiness CodeThe readiness fun
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OBD Operation Summary for 6.7L Diesel - MotorCraftService.com

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