OBD Operation Summary for Fiesta - MotorCraftService.com

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Intake Air Temperature Sensor InputIntake Air Temperature Sensor Check <strong>Operation</strong>:DTCsMonitor executionMonitor SequenceSensors OKMonitoring DurationP0112 – Intake Air Temperature circuit lowP0113 Intake Air Temperature circuit highP0114 Intake Air Temperature circuit intermittent/erraticcontinuousNoneIAT5 seconds to register a malfunctionTypical ECT Sensor Rationality check entry conditions:Entry Condition Minimum MaximumBattery voltage 11 V 16 VMinimum time after start3 sTypical IAT sensor check malfunction thresholds:P0112 - Short to ground: ≤ 0.02 VP0113 - Short to battery / Open circuit: ≥ 3.17 VP0114 - Signal intermittent / Noisy (IAT difference from moving average): ≥ 8.25 °CCONTINENTAL REVISED: SEPTEMBER 17, 2010 PAGE 86 OF 111
IAT Rationality TestThe IAT rationality test determines if the IAT sensor is producing an erroneous temperature indication within the normalrange of IAT sensor input.Intake Air Temperature Sensor Cold Start Plausibility Check <strong>Operation</strong>:DTCsMonitor executionMonitor SequenceP009A - Intake Air Temperature /Ambient Air Temperature CorrelationOnce per driving cycle, at start-upNoneSensors OK P2610, P0113, P0112, P0114, P0111, P0073, P0072, P0074, P0118, P0117,P0119, P0116, P0500, P0501Monitoring DurationImmediate or up to 30 minutes to register a malfunctionTypical Intake Air Temperature Sensor Cold Start Plausibility Entry ConditionsEntry condition Minimum MaximumEngine off time6.7 hAbs | Engine Coolant Temperature at start minus Intake Air Temp at start | 18 °CBlock heater not presentengine run time240 sTypical IAT Sensor Cold Start Plausibility check malfunction thresholds:P009AAbs | Ambient Air Temp minus Engine Coolant Temperature at start | > 18 °C ANDAbs | Ambient Air Temp minus Intake Air Temperature at start | > 18 °CCONTINENTAL REVISED: SEPTEMBER 17, 2010 PAGE 87 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
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EVAP Pressure Switch Performance Mo
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NVLD II Communication Check Operati
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O2 sensor voltageSHRTFT, Short Term
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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: ECT Sensor Rationality Check Operat
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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OBD Operation Summary for Fiesta - MotorCraftService.com

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