OBD Operation Summary for Fiesta - MotorCraftService.com

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HO2S11 “Signal Dynamics – Slow Response” Operation:DTCs P0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)P0134 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)Monitor execution Once per driving cycleMonitor Sequence NoneSensors OK MAF, HO2S, ECT, HO2S heater, CPSMonitoring Duration 12.7 to 18 seconds to register a malfunctionTypical HO2S11 response rate entry conditions:Entry condition Minimum MaximumExhaust gas temperature399 o CEngine coolant temperature50.25 o CEngine speed 992 rpm 3488 rpmMass air flow 15 kg/h 400 kg/hNumber of rich/lean cycles in closed loop (P0134 only) 50Air fuel lean / air fuel rich cycle time (P0134 only)1 sTypical HO2S11 response rate malfunction thresholds:P0133Frequency Check - Actual R/L or L/R switch period compared to expected switch period: > 1.75P0134Sensor signal voltage amplitude difference:: < 0.3 VJ1979 HO2S11 Mode $06 DataMonitor ID Test ID Description Units$01 $81 Signal voltage amplitude difference Volts$01 $83 Difference between lean and rich frequency ratios None$01 $86 Actual switch period compared to expected switch period for rich time None$01 $87 Actual switch period compared to expected switch period for lean time NoneCONTINENTAL REVISED: SEPTEMBER 17, 2010 PAGE 42 OF 111
Up-Stream Oxygen Sensor Rationality during Fuel Cut-OffCONTINENTAL REVISED: SEPTEMBER 17, 2010 PAGE 43 OF 111
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 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: Upstream HO2S Slow Response CheckCO
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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