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
Reductant Pump Motor Circuit ChecksReductant Pump Motor Open/Short Check Operation:DTCsMonitor executionMonitor SequenceSensors OKMonitoring DurationP208A – Reductant Pump Control Circuit OpenP208C – Reductant Pump Control Circuit LowP208D – Reductant Pump Control Circuit HighContinuous – Open and Low with driver off / High with driver onnonenoneCircuit Open / Low: 8 seconds to register a malfunctionCircuit High: 2 seconds to register a malfunctionTypical Reductant Motor Check Malfunction Thresholds:No calibration thresholds available, fault information is sent directly from power stage.P208A - Reductant Pump Control Open Circuit > 5.80 voltsP208C - Reductant Pump Control Circuit Low < 3.50 voltsP208D - Reductant Pump Control Circuit High > 2.2 ampsFORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 120 OF 157
Reductant Pump Motor Functional CheckThe functional check monitors the Pump Motor Speed Deviation. This test is run if the commanded pump speed iswithin normal operating range, i.e. duty cycle 6.5 to 80 %. In this test if the internal RPM measurement of theReductant Pump Motor speed is not matching the commanded speed within a certain percentage, a fault isdetected and the system is shut down for this key cycle.Reductant Pump Motor Control (Normal) Functional Check Operation:DTCsMonitor executionMonitor SequenceSensors/Actuators OKMonitoring DurationP208B – Reductant Pump Control Range/PerformancecontinuousP208A , P208C, P208D must completeReductant pump pressure sensor, Reductant injector5 sec for fault detectionTypical Reductant Pump Motor Control (Normal) Functional Check Malfunction Thresholds:P208B: > 300 RPM errorReductant Dosing Valve (Injector)The reductant dosing valve is used to meter and atomize the reductant liquid before it is mixed with the exhaustgas. Normal operating frequency is between 3 Hz and .3 Hz. The cooling body contains heat sink fins to keep theinjector and reductant below the boiling point. If the sensed temperature is nearing the maximum temperaturethreshold, reductant spray will be increased in quantity to actively cool the valve.FORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 121 OF 157
- 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 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
Reductant Pump Motor Functional CheckThe functional check monitors the Pump Motor Speed Deviation. This test is run if the <strong>com</strong>manded pump speed iswithin normal operating range, i.e. duty cycle 6.5 to 80 %. In this test if the internal RPM measurement of theReductant Pump Motor speed is not matching the <strong>com</strong>manded speed within a certain percentage, a fault isdetected and the system is shut down <strong>for</strong> this key cycle.Reductant Pump Motor Control (Normal) Functional Check <strong>Operation</strong>:DTCsMonitor executionMonitor SequenceSensors/Actuators OKMonitoring DurationP208B – Reductant Pump Control Range/Per<strong>for</strong>mancecontinuousP208A , P208C, P208D must <strong>com</strong>pleteReductant pump pressure sensor, Reductant injector5 sec <strong>for</strong> fault detectionTypical Reductant Pump Motor Control (Normal) Functional Check Malfunction Thresholds:P208B: > 300 RPM errorReductant Dosing Valve (Injector)The reductant dosing valve is used to meter and atomize the reductant liquid be<strong>for</strong>e it is mixed with the exhaustgas. Normal operating frequency is between 3 Hz and .3 Hz. The cooling body contains heat sink fins to keep theinjector and reductant below the boiling point. If the sensed temperature is nearing the maximum temperaturethreshold, reductant spray will be increased in quantity to actively cool the valve.FORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 121 OF 157
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