OBD Operation Summary for Fiesta - MotorCraftService.com

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Mass Air Flow SensorMAF Sensor Check Operation:DTCsMonitor executionMonitor SequenceSensors OKMonitoring DurationP0102 (MAF low input)P0103 (MAF high input)continuousnoneTPS, CKP100 ms to register a malfunctionTypical Ambient Air Temperature Sensor Plausibility Entry ConditionsEntry condition Minimum MaximumEngine speed (P0102 only)704 rpmThrottle position (P0102 only)0.503 degDFCO not active (P0102 only)Typical MAF sensor check malfunction thresholds:P0102Short to ground, open circuit: < 0.06 VP0103Short to battery: > 4.9 VCONTINENTAL REVISED: SEPTEMBER 17, 2010 PAGE 90 OF 111
Mass Air Flow Range PerformanceTTPS Load Check Operation:DTCsMonitor executionMonitor SequenceSensors OKMonitoring DurationP0101ContinuousNoneMAF, IAT, CPS, ambient sensor, TP,supply voltage, CAM, VVT, ECT2.4 sec within test entry conditionsTPS Load Check Operation entry conditions:Entry Condition Minimum MaximumClosed Loop Fuel ControlActiveBattery voltage10 VECT70 deg CIAT15 deg CEngine run time30 sFiltered lambda correction -22.5%Filtered lambda correction 22.5%BARO 75 kPa 108 kPaEngine speed (idle test) 640 rpm 1056 rpmThrottle position (idle test)4 to 14 degEngine speed (part throttle test) 992 rpm 4000 rpmThrottle position (part throttle test)15 to 28 degNormalized load (part throttle test) 35% 63%Typical TPS Load Check Operation malfunction thresholds:Actual Air Flow - Modeled Airflow for idle test > 30% AND lambda correction -30%Actual Air Flow - Modeled Airflow for part throttle test > 18 to 25% AND lambda correction -22.5%CONTINENTAL REVISED: SEPTEMBER 17, 2010 PAGE 91 OF 111
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2011 MY OBD System OperationSummary
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Knock Sensor.......................
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In the example above, CATMN_IAF_SUM
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Typical IAF catalyst monitor entry
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Fault processing - Emission Thresho
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Misfire Determination ProcessingCON
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J1979 Misfire Mode $06 DataMonitor
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.020" Leak Switch OpenTypical vehic
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CONTINENTAL REVISED: SEPTEMBER 17,
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NVLD II Module OperationNVLD II mod
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Canister Purge Solenoid, switch and
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Canister Purge valve Functional che
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High Purge Flow Monitor Operation:D
Page 27 and 28:
EVAP Pressure Switch Performance Mo
Page 29 and 30:
NVLD II Communication Check Operati
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O2 sensor voltageSHRTFT, Short Term
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Fuel Monitor Adaption MonitoringErr
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Fuel Monitor Operation:DTCsMonitor
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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: Ambient Air Temperature Sensor Inpu
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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OBD Operation Summary for Fiesta - MotorCraftService.com

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