OBD Operation Summary for 6.7L Diesel - MotorCraftService.com

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Feedback control: ................................................................................................................................................. 34EXHAUST GAS SENSOR MONITOR ...................................................................................................................... 38Air-Fuel Ratio Sensors: Tailpipe NOx and O2 Sensor Control Module ............................................................. 38EXHAUST GAS RECIRCULATION (EGR) SYSTEM MONITOR ........................................................................... 44EGR Rate System Monitor ................................................................................................................................... 44EGR Cooler / EGR Cooler Bypass Monitor ........................................................................................................ 45EGR System Slow Response .............................................................................................................................. 48EGR Closed-loop Control Limits Monitor ............................................................................................................ 48Mass Airflow Closed-loop Control Limits Monitor ............................................................................................... 49BOOST PRESSURE CONTROL SYSTEM MONITORING .................................................................................... 51Intrusive Turbo Position and Response Monitoring ............................................................................................ 51Intrusive Wastegate Monitoring ........................................................................................................................... 53Functional Overboost Monitoring ......................................................................................................................... 54Functional Underboost Monitoring ....................................................................................................................... 55Threshold Underboost Monitoring ....................................................................................................................... 56Charge Air Cooler Monitoring ............................................................................................................................... 57PARTICULATE MATTER (PM) FILTER MONITORING ......................................................................................... 58DPF Filter Efficiency and Missing Substrate Monitors ........................................................................................ 58DPF Frequent Regeneration Monitor .................................................................................................................. 59DPF Incomplete Regeneration Monitor ............................................................................................................... 60DPF Feedback Control Monitors ......................................................................................................................... 61DPF Restriction Monitor ....................................................................................................................................... 62CRANKCASE VENTILATION (CV) SYSTEM MONITOR ....................................................................................... 63ENGINE COOLING SYSTEM MONITORING .......................................................................................................... 65Thermostat Monitor ............................................................................................................................................... 65Primary Coolant Temp Dynamic Monitoring ....................................................................................................... 68Secondary Coolant Temp Dynamic Monitoring .................................................................................................. 69COLD START EMISSION REDUCTION STRATEGY MONITORING................................................................... 70Cold Start Emission Reduction System Monitor ................................................................................................. 70Cold Start Emission Reduction Component Monitor .......................................................................................... 71Engine Sensors ........................................................................................................................................................... 74Air Temperature Rationality Test ......................................................................................................................... 74Barometric Pressure and Manifold Absolute Pressure ....................................................................................... 82Turbine Upstream Pressure Sensor Plausibility Checks .................................................................................... 84Upstream Turbine Pressure Sensor Signal Range Check................................................................................. 85EGR Valve Position Sensor ................................................................................................................................. 86Throttle Position Sensor ....................................................................................................................................... 86EGR Downstream Temperature Sensor Dynamic Plausibility Check ............................................................... 87Engine Coolant & Engine Oil Correlation ............................................................................................................ 88FORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 2 OF 157
Cam and Crank Sensor: ....................................................................................................................................... 91Fan: ........................................................................................................................................................................ 93Mass Air Meter ...................................................................................................................................................... 94MAF Rationality Check ......................................................................................................................................... 96DEF Pressure Sensor .......................................................................................................................................... 99Reductant Pressure Sensor Signal Range Check............................................................................................ 100Reductant Pressure Plausibility Check before Start-up .................................................................................... 100DEF Pressure Build-up Check at Start-up ........................................................................................................ 101DEF System Pressure Control ........................................................................................................................... 102Reductant Tank Level Sensor ............................................................................................................................ 103Reductant Tank Level Sensor Circuit Checks .................................................................................................. 104Reductant Tank Level Sensor Plausibility Check ............................................................................................. 105Reductant Tank Temperature Sensor ............................................................................................................... 105Exhaust Gas Temperature Sensor Rationality Test ......................................................................................... 108Diesel Particulate Filter Pressure Sensor Rationality Test ............................................................................... 111Diesel Particulate Filter Pressure Offset Test ................................................................................................... 112Engine Outputs .......................................................................................................................................................... 113EGR Valve Actuator Signal Range Check ........................................................................................................ 113EGR Valve Actuator Jammed Detection ........................................................................................................... 113Throttle Valve Actuator Signal Range Check .................................................................................................... 114Throttle Valve Actuator Jammed Detection ....................................................................................................... 115ECB Valve Actuator Signal Range Check......................................................................................................... 116Urea System Pressure Control .......................................................................................................................... 116Reductant Pump Motor ...................................................................................................................................... 118Reductant Dosing Valve (Injector) ..................................................................................................................... 121Reverting Valve ................................................................................................................................................... 124Urea Heaters ....................................................................................................................................................... 126Lack of Communication Codes: ......................................................................................................................... 134Glow Plugs .......................................................................................................................................................... 136Turbocharger Actuator Signal Range Check .................................................................................................... 141Wastegate Vacuum Solenoid Signal Range Check ......................................................................................... 141Miscellaneous ECU Errors: ................................................................................................................................ 142Comprehensive Component Monitor - Transmission ............................................................................................. 143Transmission Inputs ............................................................................................................................................ 143Transmission Outputs ......................................................................................................................................... 1476R140 (RWD) Transmission with external PCM or TCM ....................................................................................... 151On Board Diagnostic Executive ................................................................................................................................ 154Exponentially Weighted Moving Average ................................................................................................................ 155I/M Readiness Code .................................................................................................................................................. 156FORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 3 OF 157
Page 1: 2013 MY OBD System OperationSummary
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 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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