OBD Operation Summary for Fiesta - MotorCraftService.com

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0.090” Leak/Low Purge Flow Monitor Operation:DTCsP0455 (0.090” leak/no purge flow)Monitor executiononce per driving cycleSensors/Components OK PU029F, PU05A0, P0450, P0451, P0452, P0453, P0497, P0444, P0458,P0459, P0460, P0461, P0462, P0463, P0128, P0116, P0117, P0118, P2227,P2228, P2229, P0072, P0073, P0500, P0501Monitoring Duration80 secondsTypical 0.090” Leak/Low Purge Flow monitor entry conditions:Entry condition Minimum MaximumEngine run time60 secondsEngine Coolant Temperature48 ° CAmbient Air Temperature4.5 ° CFuel Fill Level 14.83% 99.6%BARO75 kPaStable idle rpm100 rpmStable idle torque5 NmVehicle speed0.6 mphTypical 0.090" Leak/Low Purge Flow monitor malfunction thresholds:Evaporative emission system pressure switch state open for > 150 sec ANDManifold pressure change > 1.4 kPa AND Manifold pressure min/max delta > 1.4 kPa ANDMass air flow change >0.906 kg/h AND Mass air flow min/max delta >0.906 kg/h ANDAir adaptive change >45% AND air adaptive min/max delta >45% ANDEngine idle speed change >20 rpm AND Engine idle speed min/max delta >20 rpm ANDIdle speed controller change >0.3125 Nm AND Idle speed controller min/max delta > 0.3125 Nm ANDLambda change > 10% AND Lambda min / max delta > 10%J1979 NVLD II 0.090" leak monitor Mode $06 DataMonitor ID Comp ID Description Units$3A $A1 Time for NVLD II switch to close during large leak check secondsCONTINENTAL REVISED: SEPTEMBER 17, 2010 PAGE 24 OF 111
High Purge Flow Monitor Operation:DTCsP0497 (high purge flow)Monitor executionSensors/Components OKMonitoring Durationonce per driving cycle80 secondsHigh Purge Flow monitor entry conditions:Entry condition Minimum MaximumEngine run time900 secondsEngine Coolant Temperature33.75° CAmbient Air Temperature4.5 ° CFuel Fill Level 15% 99.6%BARO75 kPaTime at Idle4 secondsStable idle rpm100 rpmStable idle torque5 NmVehicle speed0.6 mphHigh Purge Flow monitor malfunction thresholds:Evaporative emission system pressure switch state open for > 60 sec ANDManifold presssure change < 14.hPa OR Manifold pressure min/max delta < 14 hPa ORMass air flow change
Page 1 and 2: 2011 MY OBD System OperationSummary
Page 3 and 4: Knock Sensor.......................
Page 5 and 6: In the example above, CATMN_IAF_SUM
Page 7 and 8: Typical IAF catalyst monitor entry
Page 9 and 10: Fault processing - Emission Thresho
Page 11 and 12: Misfire Determination ProcessingCON
Page 13 and 14: J1979 Misfire Mode $06 DataMonitor
Page 15 and 16: .020" Leak Switch OpenTypical vehic
Page 17 and 18: CONTINENTAL REVISED: SEPTEMBER 17,
Page 19 and 20: NVLD II Module OperationNVLD II mod
Page 21 and 22: Canister Purge Solenoid, switch and
Page 23: Canister Purge valve Functional che
Page 27 and 28: EVAP Pressure Switch Performance Mo
Page 29 and 30: NVLD II Communication Check Operati
Page 31 and 32: O2 sensor voltageSHRTFT, Short Term
Page 33 and 34: Fuel Monitor Adaption MonitoringErr
Page 35 and 36: Fuel Monitor Operation:DTCsMonitor
Page 37 and 38: Upstream HO2S Circuit CheckNoStartM
Page 39 and 40: HO2S11 circuit check operation:DTCs
Page 41 and 42: Upstream HO2S Slow Response CheckCO
Page 43 and 44: Up-Stream Oxygen Sensor Rationality
Page 45 and 46: Upstream Oxygen Sensor Heater Circu
Page 47 and 48: HO2S Heater Monitor Operation:DTCs
Page 49 and 50: HO2S12 circuit check operation:DTCs
Page 51 and 52: Downstream Oxygen Sensor Slow Respo
Page 53 and 54: Downstream HO2S12 Response Rate Ope
Page 55 and 56: Downstream HO2S12 Functional Check
Page 57 and 58: Downstream HO2S Heater Electrical C
Page 59 and 60: Thermostat MonitorThe coolant therm
Page 61 and 62: ECT Below Thermostat Regulating Tem
Page 63 and 64: Spark Timing MonitorWhen the CSER s
Page 65 and 66: Cold Start Emission Reduction Syste
Page 67 and 68: CSER Monitor OperationDTCMonitor Ex
Page 69 and 70: Variable Camshaft Timing Target Err
Page 71 and 72: Variable Cam Timing Slow ResponseSt
Page 73 and 74: Typical VVT Target Error/Slow Respo
Page 75 and 76:
Camshaft/Crankshaft Position Correl
Page 77 and 78:
Electronic Throttle ControlThe Elec
Page 79 and 80:
Electronic Throttle Control (ETC) M
Page 81 and 82:
Electronic Throttle Control (ETC) M
Page 83 and 84:
Accelerator and Throttle Position S
Page 85 and 86:
ECT Sensor Rationality Check Operat
Page 87 and 88:
IAT Rationality TestThe IAT rationa
Page 89 and 90:
Ambient Air Temperature Sensor Inpu
Page 91 and 92:
Mass Air Flow Range PerformanceTTPS
Page 93 and 94:
5 Volt Sensor Reference Voltage A C
Page 95 and 96:
Idle Speed Control MonitorThe Idle
Page 97 and 98:
Knock SensorTwo basic diagnostic te
Page 99 and 100:
Ignition CoilThe purpose of this di
Page 101 and 102:
Crankshaft Position Sensor MonitorA
Page 103 and 104:
Each clutch system consists of:•
Page 105 and 106:
3. Shift drum A motor - controls th
Page 107 and 108:
The diagnostic executive controls t
Page 109 and 110:
EWMA ExamplesEWMA with FIR and SCL
Page 111:
Closed Loop Fuel Control Enable Con
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