2005 MY OBD System Operation Summary for Gasoline Engines
2005 MY OBD System Operation Summary for Gasoline Engines 2005 MY OBD System Operation Summary for Gasoline Engines
J1979 Misfire Mode $06 DataTest ID Comp ID Description for J1850 Units$50 $00 Total engine misfire and emission threshold misfire rate (updatedevery 1,000 revolutions)$53 $00 - $0A Cylinder-specific misfire and catalyst damage threshold misfire rate(either cat damage or emission threshold) (updated when DTC set orclears)$54 $00 Highest catalyst-damage misfire and catalyst damage threshold misfirerate (updated when DTC set or clears)$55 $00 Highest emission-threshold misfire and emission threshold misfire rate(updated when DTC set or clears)$56 $00 Cylinder events tested and number of events required for a 1000 revtestpercentpercentpercentpercenteventsMonitor ID Test ID Description for CANA1 $80 Total engine misfire and catalyst damage misfire rate (updated every200 revolutions)A1 $81 Total engine misfire and emission threshold misfire rate (updatedevery 1,000 revolutions)A1 $82 Highest catalyst-damage misfire and catalyst damage threshold misfirerate (updated when DTC set or clears)A1 $83 Highest emission-threshold misfire and emission threshold misfire rate(updated when DTC set or clears)A1 $84 Inferred catalyst mid-bed temperaturepercentpercentpercentpercento CA2 – AD $0B EWMA misfire counts for last 10 driving cycles eventsA2 – AD $0C Misfire counts for last/current driving cycle eventsA2 – AD $80 Cylinder X misfire rate and catalyst damage misfire rate (updatedevery 200 revolutions)A2 – AD $81 Cylinder X misfire rate and emission threshold misfire rate (updatedevery 1,000 revolutions)percentpercentConversion for Test IDs $50 through $55: multiply by 0.000015 to get percentConversion for Test ID $56: multiply by 1 to get ignition eventsFORD MOTOR COMPANY REVISION DATE: APRIL 28, 2004 PAGE 12 OF 131
Profile Correction OperationDTCsMonitor ExecutionMonitor Sequence:Sensors OK:Monitoring Duration;P0315 - unable to learn profile in three 60 to 40 mph decelsP1309 – AICE chip communication failureonce per KAM reset.Profile must be learned before misfire monitor is active.CKP, CMP, no AICE communication errors, CKP/CMP in synch10 cumulative seconds in conditions(a maximum of three 60-40 mph defueled decels)Typical profile learning entry conditions:Entry condition Minimum MaximumEngine in decel-fuel cutout mode for 4 engine cyclesBrakes applied No NoEngine RPM 1300 rpm 3700 rpmChange in RPMVehicle Speed 30 mph 75 mphLearning tolerance 1%600 rpm/backgroundloopFORD MOTOR COMPANY REVISION DATE: APRIL 28, 2004 PAGE 13 OF 131
- Page 1: Table of ContentsIntroduction - OBD
- Page 4 and 5: !The Catalyst Efficiency Monitor us
- Page 6 and 7: TYPICAL INDEX RATIO CATALYST MONITO
- Page 8 and 9: There are three different misfire m
- Page 10 and 11: 0#1The acceleration that a piston u
- Page 14 and 15: 0$Secondary air systems typically u
- Page 16 and 17: 201 34536/#/Vehicles that meet enha
- Page 18 and 19: 0.040” EVAP Monitor Operation:DTC
- Page 20 and 21: 201 3536/#/Some vehicles that meet
- Page 22 and 23: slosh. If the monitor aborts, it wi
- Page 24 and 25: 0.020” EVAP Monitor Operation:DTC
- Page 26 and 27: Test ID Comp ID Description for J18
- Page 28 and 29: Ford's EONV implementation for Cali
- Page 30 and 31: 1#4;!In this phase, the EONV test i
- Page 32 and 33: 0.020” EONV EVAP Monitor Operatio
- Page 34 and 35: 201!!#/Additional malfunctions that
- Page 36 and 37: Fuel Tank Pressures Sensor Offset C
- Page 38 and 39: :As fuel system components age or o
- Page 40 and 41: -:-The time between HO2S switches i
- Page 42 and 43: $-A functional test of the rear HO2
- Page 44 and 45: -- 3 amps, (NTK)< 0.400 amps or > 3
- Page 46 and 47: 1:$The Delta Pressure Feedback EGR
- Page 48 and 49: If an EGR system malfunction is det
- Page 50 and 51: After the vehicle has warmed up and
- Page 52 and 53: 1:$In the 2002.5 MY, Ford introduce
- Page 54 and 55: The ESM may provide the PCM with a
- Page 56 and 57: Next, the differential pressure ind
- Page 58 and 59: I/M Readiness IndicationIf the infe
- Page 60 and 61: The Stepper Motor EGR Monitor consi
Profile Correction <strong>Operation</strong>DTCsMonitor ExecutionMonitor Sequence:Sensors OK:Monitoring Duration;P0315 - unable to learn profile in three 60 to 40 mph decelsP1309 – AICE chip communication failureonce per KAM reset.Profile must be learned be<strong>for</strong>e misfire monitor is active.CKP, CMP, no AICE communication errors, CKP/CMP in synch10 cumulative seconds in conditions(a maximum of three 60-40 mph defueled decels)Typical profile learning entry conditions:Entry condition Minimum MaximumEngine in decel-fuel cutout mode <strong>for</strong> 4 engine cyclesBrakes applied No NoEngine RPM 1300 rpm 3700 rpmChange in RPMVehicle Speed 30 mph 75 mphLearning tolerance 1%600 rpm/backgroundloopFORD MOTOR COMPANY REVISION DATE: APRIL 28, 2004 PAGE 13 OF 131
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