OBD Operation Summary for Fiesta - MotorCraftService.com

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VVT Camshaft/Crankshaft Position Correlation Monitor Operation:DTCs P0016 - Crank/Cam Position Correlation (Bank 1 Sensor A)Monitor executionMonitor SequenceSensors OKMonitoring DurationP0017 - Crank/Cam Position Correlation (Bank 1 Sensor B)Continuous, with the exception of P052x codes which are only run duringCSER operationNoneCMP2160 crank degreesTypical VVT Camshaft/Crankshaft Position Correlation monitor entry conditions:Entry condition Minimum MaximumVVT activeCAM adaptation activeEngine speedFailure Time2160 ° crank angle3296 rpmTypical In-Use Performance monitoring thresholds:P0016camshaft adapted reference position out of range: < -18 or > +18 deg crankExcessive change in consecutive camshaft adaptations: > 10 deg crankP0017camshaft adapted reference position out of range: < -5 or > +5 deg crankExcessive change in consecutive camshaft adaptations: > 10 deg crankCONTINENTAL REVISED: SEPTEMBER 17, 2010 PAGE 76 OF 111
Electronic Throttle ControlThe Electronic Throttle Control (ETC) system uses a strategy that delivers engine or output shaft torque, based ondriver demand, utilizing an electronically controlled throttle body. ETC strategy was developed mainly to improve fueleconomy. This is possible by decoupling throttle angle (produces engine torque) from pedal position (driver demand).This allows the powertrain control strategy to optimize fuel control and transmission shift schedules while delivering therequested engine or wheel torque.ETC System Failure Mode and Effects Management:EffectNo Effect on DrivabilityRPM Guard w/ PedalFollowerRPM Guard w/ DefaultThrottleRPM Guard w/ ForcedHigh IdleShutdownFailure ModeA loss of redundancy or loss of a non-critical input could result in a fault that doesnot affect drivability. The ETC light will turn on, but the throttle control and torquecontrol systems will function normally.In this mode, torque control is disabled due to the loss of a critical sensor or ECMfault. The throttle is controlled in pedal-follower mode as a function of the pedalposition sensor input only. A maximum allowed RPM is determined based on pedalposition (RPM Guard.) If the actual RPM exceeds this limit, spark and fuel are usedto bring the RPM below the limit. The ETC light and the MIL are turned on in thismode and the corresponding trouble code will be stored.In this mode, the throttle plate control is disabled due to the loss of Throttle Position,the Throttle Plate Position Controller, or other major Electronic Throttle Body fault.A default command is sent to the TPPC, or the H-bridge is disabled. Depending onthe fault detected, the throttle plate is controlled or springs to the default (limphome) position. A maximum allowed RPM is determined based on pedal position(RPM Guard.) If the actual RPM exceeds this limit, spark and fuel are used to bringthe RPM below the limit. The ETC light and the MIL are turned on in this mode andthe corresponding trouble code will be stored.This mode is caused by the loss of 2 or 3 pedal position sensor inputs due tosensor, wiring, or ECM faults. The system is unable to determine driver demand,and the throttle is controlled to a fixed high idle airflow. There is no response to thedriver input. The maximum allowed RPM is a fixed value (RPM Guard.) If the actualRPM exceeds this limit, spark and fuel are used to bring the RPM below the limit.The ETC light and the MIL are turned on in this mode and the correspondingtrouble code will be stored.If a significant processor fault is detected, the monitor will force vehicle shutdown bydisabling all fuel injectors. The ETC light and the MIL are turned on in this modeand the corresponding trouble code will be stored.Note: Vehicle shutdown does not increase emissions; therefore the MIL is notrequired to be illuminated for this fault.Note: ETC illuminates or displays a message on the message center immediately,MIL illuminates after 2 driving cyclesCONTINENTAL REVISED: SEPTEMBER 17, 2010 PAGE 77 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
Page 15 and 16:
.020" Leak Switch OpenTypical vehic
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CONTINENTAL REVISED: SEPTEMBER 17,
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NVLD II Module OperationNVLD II mod
Page 21 and 22:
Canister Purge Solenoid, switch and
Page 23 and 24:
Canister Purge valve Functional che
Page 25 and 26: High Purge Flow Monitor Operation:D
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: Camshaft/Crankshaft Position Correl
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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OBD Operation Summary for Fiesta - MotorCraftService.com

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