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
Diesel Particulate Filter Pressure Sensor Rationality CheckDTCsMonitor ExecutionMonitor SequenceSensors OKTypical Monitoring DurationP2453 – DPFP Sensor Circuit Range/PerformanceP2456 – DPFP Sensor Circuit Intermittent/ErraticContinuous.None.2 seconds.Typical Diesel Particulate Filter Pressure Sensor Rationality Check Entry Conditions:Entry Condition Minimum MaximumExhaust Volume 500 m3/hour None.Dynamic Exhaust Volume > 100 m3/h/s or < -100 m3/h/s None.Typical Diesel Particulate Filter Pressure Sensor Rationality Check Thresholds:Performance ThresholdDynamic Threshold1 kPa minimum for exhaust flows > 500 m3/hourThe threshold for the dynamic test is a function of dynamic exhaustflow. Typical values range from 0.1 kPa at 100 m3/h/s to 2 kPa at 800m3/h/s.Diesel Particulate Filter Pressure Offset TestThe DPFP Sensor is checked during after-run conditions (period where the key is turned off, however the ECU isstill powered), to verify that the sensor has not drifted from the ambient with no exhaust flow. This test is performedby comparing the sensed pressure to a threshold (due the the gauge sensor, this value should be 0)Diesel Particulate Filter Pressure Sensor Offset CheckDTCsP2452 – DPFP Sensor Circuit "A"Monitor ExecutionMonitor SequenceSensors OKTypical Monitoring DurationAfterrunNone.DPFP Sensor1 second.Typical Diesel Particulate Filter Pressure Sensor Offset CheckThresholds:Exhaust Pressure Sensor value > 10hPaFORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 112 OF 157
Engine OutputsEGR Valve Actuator Signal Range CheckThe diagnostics for the circuit range check on the pwm signal to the EGR valve are internal to the h-bridge PWMpower-stage. Open load, short-circuit to ground, and short-circuit to battery are detected on both the positive andnegative control lines to the actuator.EGR Valve Actuator Open-Load (P0490) Check Operation:DTCsMonitor executionMonitor SequenceMonitoring DurationP0490 – EGR "A" Control Circuit HighAt start; when Power-stage is OFF and if Jammed Valve is detected.None2 seconds to register a malfunctionEGR Valve Actuator Short Circuit (P0489/P0490) Check Operation:DTCsMonitor executionMonitor SequenceMonitoring DurationP0489 – EGR "A Control Circuit Low,P0490 – EGR "A" Control Circuit HighContinuous; when Power-stage ONNone2 seconds to register a malfunction.EGR Valve Actuator Jammed DetectionThe EGR valve has a component level diagnostic to make sure that the valve is not stuck or sticking in a mannersuch that it cannot reach the desired position. The monitor runs if a jammed valve is not already detected, positioncontrol is in closed-loop control, and adaptive learning is not active. A minimum engine speed is used as an entrycondition..If the position governor deviation is above a maximum calibrated threshold then an output ramp for the detection ofa permanent positive control fault begins. It the output ramp reaches a calibrated threshold then a jammed valvemalfunction is detected. Similarly, if the position governor deviation is below a minimum calibrated threshold thenan output ramp for the detection of permanent negative control deviation begins. If the output ramp reaches acalibration threshold then a jammed valve is detected,EGR Valve Jammed Check Operation:DTCsMonitor executionMonitor SequenceMonitoring DurationP04DA – Closed Loop EGR Control At Limit – Flow Too High,P04D9 – Closed Loop EGR Control At Limit – Flow Too LowContinuousNone10 seconds to register a malfunctionFORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 113 OF 157
- 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 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
<strong>Diesel</strong> Particulate Filter Pressure Sensor Rationality CheckDTCsMonitor ExecutionMonitor SequenceSensors OKTypical Monitoring DurationP2453 – DPFP Sensor Circuit Range/Per<strong>for</strong>manceP2456 – DPFP Sensor Circuit Intermittent/ErraticContinuous.None.2 seconds.Typical <strong>Diesel</strong> Particulate Filter Pressure Sensor Rationality Check Entry Conditions:Entry Condition Minimum MaximumExhaust Volume 500 m3/hour None.Dynamic Exhaust Volume > 100 m3/h/s or < -100 m3/h/s None.Typical <strong>Diesel</strong> Particulate Filter Pressure Sensor Rationality Check Thresholds:Per<strong>for</strong>mance ThresholdDynamic Threshold1 kPa minimum <strong>for</strong> exhaust flows > 500 m3/hourThe threshold <strong>for</strong> the dynamic test is a function of dynamic exhaustflow. Typical values range from 0.1 kPa at 100 m3/h/s to 2 kPa at 800m3/h/s.<strong>Diesel</strong> Particulate Filter Pressure Offset TestThe DPFP Sensor is checked during after-run conditions (period where the key is turned off, however the ECU isstill powered), to verify that the sensor has not drifted from the ambient with no exhaust flow. This test is per<strong>for</strong>medby <strong>com</strong>paring the sensed pressure to a threshold (due the the gauge sensor, this value should be 0)<strong>Diesel</strong> Particulate Filter Pressure Sensor Offset CheckDTCsP2452 – DPFP Sensor Circuit "A"Monitor ExecutionMonitor SequenceSensors OKTypical Monitoring DurationAfterrunNone.DPFP Sensor1 second.Typical <strong>Diesel</strong> Particulate Filter Pressure Sensor Offset CheckThresholds:Exhaust Pressure Sensor value > 10hPaFORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 112 OF 157
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