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
EGR Valve Position SensorAnalog inputs checked for opens or shorts by monitoring the analog -to-digital (A/D) input voltage.EGR Valve Position Sensor Check Operation:DTCsMonitor executionMonitor SequenceSensors OKMonitoring DurationP0405 (EGR Sensor "A" Circuit Low)P0406 (EGR Sensor "A" Circuit High)continuousnonenot applicable3 seconds to register a malfunctionTypical EGR Valve position sensor check malfunction thresholds (P0405,P0406):Voltage < 0.30 volts or Voltage > 4.70 voltsThrottle Position SensorAnalog inputs checked for opens or shorts by monitoring the analog -to-digital (A/D) input voltage.Throttle Position Sensor Check Operation:DTCsMonitor executionMonitor SequenceSensors OKMonitoring DurationP02E9 (Diesel Intake Air Flow Position Circuit High),P02E8 (Diesel Intake Air Flow Position Circuit Low).continuousnonenot applicable3 seconds to register a malfunctionTypical TP sensor check malfunction thresholds (P02E8,P02E9):Voltage < 0.08 volts or Voltage > 4.92 voltsFORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 86 OF 157
EGR Downstream Temperature Sensor Dynamic Plausibility CheckThe EGR Downstream temperature sensor rationality test checks to make sure that the sensor is not stuck in arange that causes other OBD to be disabled. If after a long (8 hour) soak and ECT < 70 o C, then the temp at start iscompared to the temp after a calibrated elapsed runtime. If the change in temperature downstream of the EGRcooler is below the minimum calibrated threshold (5 o C), then the sensor is assumed to be stuck in range.EGR Downstream Temperature Sensor Dynamic Plausibility Check Operation:DTCsMonitor executionMonitor SequenceMonitoring Duration for stuck midrangeP040B – EGR Temperature Sensor "A" CircuitRange/PerformanceOnce per driving cycleNone0.5 seconds to register a malfunctionTypical EGR Downstream Temperature Sensor Dynamic Plausibility check entry conditions:Entry Condition Minimum MaximumEngine-off time (soak time)480 minEngine run timer300 secEngine Coolant Temperature70 o CEngine Coolant Temperature at Start70 o CEngine Speed 1000 rpm 3000 rpmEngine Torque 100 N-m 300 N-mEGR Valve Positions (Actual) 10% 60%Typical EGR Downstream Temperature Sensor Plausibility check malfunction thresholds:TEGRDs (at 300 sec) – TEGRDs (at Start) < dtMinDyn (5 o C) then sensor is stuck in range.FORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 87 OF 157
- 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 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
EGR Downstream Temperature Sensor Dynamic Plausibility CheckThe EGR Downstream temperature sensor rationality test checks to make sure that the sensor is not stuck in arange that causes other <strong>OBD</strong> to be disabled. If after a long (8 hour) soak and ECT < 70 o C, then the temp at start is<strong>com</strong>pared to the temp after a calibrated elapsed runtime. If the change in temperature downstream of the EGRcooler is below the minimum calibrated threshold (5 o C), then the sensor is assumed to be stuck in range.EGR Downstream Temperature Sensor Dynamic Plausibility Check <strong>Operation</strong>:DTCsMonitor executionMonitor SequenceMonitoring Duration <strong>for</strong> stuck midrangeP040B – EGR Temperature Sensor "A" CircuitRange/Per<strong>for</strong>manceOnce per driving cycleNone0.5 seconds to register a malfunctionTypical EGR Downstream Temperature Sensor Dynamic Plausibility check entry conditions:Entry Condition Minimum MaximumEngine-off time (soak time)480 minEngine run timer300 secEngine Coolant Temperature70 o CEngine Coolant Temperature at Start70 o CEngine Speed 1000 rpm 3000 rpmEngine Torque 100 N-m 300 N-mEGR Valve Positions (Actual) 10% 60%Typical EGR Downstream Temperature Sensor Plausibility check malfunction thresholds:TEGRDs (at 300 sec) – TEGRDs (at Start) < dtMinDyn (5 o C) then sensor is stuck in range.FORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 87 OF 157
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