OBD Operation Summary for 6.7L Diesel - MotorCraftService.com

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Typical Entry Conditions:Entry condition Minimum MaximumSCR Feedback Control EnabledShort term efficiency 0.2Short term to long term efficiency delta 0.1Regeneration Cycle Not RequestedEngine coolant temperatureAmbient air temperature70 deg C-6.7 degCBarometric Pressure 82.5 kPa 120 kPaEngine Speed 1000 rpm 3000 rpmTorque Transients -30 N-m/s, +10 N-m/sExhaust Space Velocity 5000 120,000SCR Inlet temp 200 degC 350 degCDEF storage 30% understored 40% overstoredDiesel Exhaust Fluid refill detected (only forReductant Quality Performance monitor)Typical Malfunction Thresholds:P20EE: If the cumulative efficiency of the SCR Catalyst is less than 25% for approx 60 seconds., a fault isindicated.P207F: the short term Nox efficiency needs to be less than 0.20 and the delta between short and long termefficiency needs to be greater than 0.10. This generally occurs in a highway drive cycle within 15 miles whenconditions are present.FORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 16 OF 157
Selective Catalyst Reduction Feedback Control MonitorsThe SCR system is monitored to ensure the proper closed loop control of the reductant injection. As part of thereductant injection control, a correction factor is adapted to account for long term drift of the system (injector, etc).This correction factor is monitored continuously. If the correction factor reaches a threshold in the positive ornegative direction for a sufficient period of time, a fault will be indicated.A SCR Time to Closed Loop monitor is implemented to ensure that SCR feedback occurs when expected. Onceentry conditions are met, a timer is incremented. If the fraction of time in closed loop control is less than athreshold, a fault is indicated.Monitor Summary:DTCsMonitor executionMonitor SequenceSensors OKMonitoring DurationP249D – SCR Feedback at Minimum LimitP249E – SCR Feedback at Maximum LimitP249C – SCR Time to Closed LoopContinuousNoneNOx, EGT12, EGT13,TCO, EGT11 EGT14, MAF, BP, IAT, DPFP,and EGR system5 minutesTypical Entry Conditions:Entry condition Minimum MaximumLow Temp Adaptation is enabled(Feedback monitor only)Engine speed 800 rpm 3000 rpmTorque set point 0 Nm 1000 NmBarometric pressureAmbient temperatureEngine coolant temperature75 kPa-6.7 deg C70 deg CSCR temperature 160 deg C 900 deg CTypical Malfunction Thresholds:P249D: If the correction factor is clipped at its minimum value for 30 seconds then a fault is indicated.P249E: If the correction factor is clipped at its maximum value for 5 minutes then a fault is indicated.P249C: The error is set as soon as the fraction of closed loop operation vs expected is less than the threshold.The monitor needs to run for 120 seconds to call it complete.FORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 17 OF 157
Page 1 and 2: 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: OXIDES OF NITROGREN (NOx) CONVERTIN
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 58 and 59: PARTICULATE MATTER (PM) FILTER MONI
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
Page 108 and 109:
Exhaust Gas Temperature Sensor Rati
Page 110 and 111:
Exhaust Gas Temperature Rationality
Page 112 and 113:
Diesel Particulate Filter Pressure
Page 114 and 115:
Typical Actuator Jammed Valve Entry
Page 116 and 117:
ECB Valve Actuator Signal Range Che
Page 118 and 119:
Reductant Pump MotorThe Reductant P
Page 120 and 121:
Reductant Pump Motor Circuit Checks
Page 122 and 123:
Reductant Dosing Valve Circuit Chec
Page 124 and 125:
Reverting ValveIn order to reverse
Page 126 and 127:
Urea HeatersAqueous urea water solu
Page 128 and 129:
Additional plausibility check for h
Page 130 and 131:
Engine Control Unit (ECU) Monitor O
Page 132 and 133:
Typical Engine Control Unit (ECU) M
Page 134 and 135:
Lack of Communication Codes:CAN Com
Page 136 and 137:
Glow PlugsThe diesel engine uses gl
Page 138 and 139:
Glow Plug Circuit Open Load Check O
Page 140 and 141:
Glow Plug Circuit Resistance Out of
Page 142 and 143:
Miscellaneous ECU Errors:VID Block
Page 144 and 145:
Most vehicle applications no longer
Page 146 and 147:
Transmission Fluid Temperature Sens
Page 148 and 149:
Shift Solenoid Functional Check Ope
Page 150 and 151:
Pressure Control Solenoid Check Ope
Page 152 and 153:
Transmission OutputsShift Solenoids
Page 154 and 155:
On Board Diagnostic ExecutiveThe On
Page 156 and 157:
I/M Readiness CodeThe readiness fun
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OBD Operation Summary for 6.7L Diesel - MotorCraftService.com

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