OBD Operation Summary for 6.7L Diesel - MotorCraftService.com
OBD Operation Summary for 6.7L Diesel - MotorCraftService.com OBD Operation Summary for 6.7L Diesel - MotorCraftService.com
Feedback control:Fuel Balancing Control:Fuel Balancing Control is an algorithm designed to reduce differences in injected fuel quantity from cylinder tocylinder. The increase in crankshaft speed due to individual cylinder combustion events is measured. Theamount of fuel injected to each cylinder is then adjusted up or down to minimize the difference in increase incrankshaft speed from cylinder to cylinder. The total amount of fuel injected among all cylinders remains constant.The concept is shown in the graphic below.FBC operates in closed-loop control in an engine speed range of 500-1150 rpm, and a commanded injectionquantity of 3.5 – 50 mg/stroke. The maximum allowed correction in fuel quantity for an individual cylinder is givenby the following table.Fuel Balancing Control (FBC) Control Limits:Injection quantity requested before FBC correction (mg/stroke)Maximum allowable FBC correction (mg/stroke): 3.5 7.5 302.3 5 10FORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 34 OF 157
Fuel Balancing Control (FBC) Monitor Operation:DTCsMonitor ExecutionMonitor SequenceP0263 – Cylinder #1 Contribution/BalanceP0266 – Cylinder #2 Contribution/BalanceP0269 – Cylinder #3 Contribution/BalanceP0272 – Cylinder #4 Contribution/BalanceP0275 – Cylinder #5 Contribution/BalanceP0278 – Cylinder #6 Contribution/BalanceP0281 – Cylinder #7 Contribution/BalanceP0284 – Cylinder #8 Contribution/BalancecontinuousNoneSensors OK CKP (P0335, P0336)Typical Monitoring Duration10 secTypical Fuel Balancing Control (FBC) Monitor Entry Conditions:Entry condition Minimum MaximumP0263, P0266, P0269, P0272,P0275, P0278, P0281, P0284:Engine speed 500 rpm 1150 rpmInjection quantity 3.5 mg/stroke 30 mg/strokeNot In RegenerationFBC wheel learn completeTypical Fuel Balancing Control (FBC) Monitor Malfunction Thresholds:If the current correction for the injector exceeds 90% of the allowable correction for current operation conditions,the code is set.FORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 35 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 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 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
Fuel Balancing Control (FBC) Monitor <strong>Operation</strong>:DTCsMonitor ExecutionMonitor SequenceP0263 – Cylinder #1 Contribution/BalanceP0266 – Cylinder #2 Contribution/BalanceP0269 – Cylinder #3 Contribution/BalanceP0272 – Cylinder #4 Contribution/BalanceP0275 – Cylinder #5 Contribution/BalanceP0278 – Cylinder #6 Contribution/BalanceP0281 – Cylinder #7 Contribution/BalanceP0284 – Cylinder #8 Contribution/BalancecontinuousNoneSensors OK CKP (P0335, P0336)Typical Monitoring Duration10 secTypical Fuel Balancing Control (FBC) Monitor Entry Conditions:Entry condition Minimum MaximumP0263, P0266, P0269, P0272,P0275, P0278, P0281, P0284:Engine speed 500 rpm 1150 rpmInjection quantity 3.5 mg/stroke 30 mg/strokeNot In RegenerationFBC wheel learn <strong>com</strong>pleteTypical Fuel Balancing Control (FBC) Monitor Malfunction Thresholds:If the current correction <strong>for</strong> the injector exceeds 90% of the allowable correction <strong>for</strong> current operation conditions,the code is set.FORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 35 OF 157
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