18 obdg03a ecm - common summary tables...comparing a voltage measurement to controller specific...

Component/System

FaultCode

Monitor StrategyDescription

Malfunction Criteria Threshold Value Secondary Parameters Enable Conditions Time Required MILIllum.

HeaterCoolantPumpControlCircuit Open

B269A Controller specificoutput driver circuitdiagnoses the HeaterCoolant Pump ControlCircuit low sided driverfor an open circuitfailure when the outputis powered off bycomparing a voltagemeasurement tocontroller specificvoltage thresholds.

Voltage measurementoutside of controllerspecific acceptable rangeduring driver off stateindicates open circuitfailure.

Controller specific outputdriver circuit voltagethresholds are set to meetthe following controllerspecification for an opencircuit.

200 K impedancebetween signal andcontroller ground.

Run Crank Ignition inRange

Engine not cranking

== Above is true and ==

Last Open Circuit Test

= True

= True

====================

not Indeterminate

failures out of5samples6

1 sec/ sample

Continuous

Type B,2 TripsNote: IncertiancontrollersB269Cmay alsoset

18 OBDG03A ECM - Common Summary Tables

ECM - Common Section Page 1 of 536 Page 1 of 1589

Component/System

FaultCode



HeaterCoolantPumpControlCircuit Low

B269C Controller specificoutput driver circuitdiagnoses the HeaterCoolant Pump ControlCircuit low sided driverfor a short to groundfailure when the outputis powered off bycomparing a voltagemeasurement tocontroller specificvoltage thresholds.

Voltage measurementoutside of controllerspecific acceptable rangeduring driver off stateindicates short to groundfailure.

Controller specific outputdriver circuit voltagethresholds are set to meetthe following controllerspecification for a short toground.

0.5 impedancebetween signal andcontroller ground


Engine not cranking



= True

= True

====================

not Indeterminate


1 sec/ sample

Continuous

Type B,2 TripsNote: IncertiancontrollersB269Amay alsoset



Component/System

FaultCode



HeaterCoolantPumpControlCircuit High

B269D Controller specificoutput driver circuitdiagnoses the HeaterCoolant Pump ControlCircuit low sided driverfor a short to powerfailure when the outputis powered on bycomparing a voltagemeasurement tocontroller specificvoltage thresholds.

Voltage measurementoutside of controllerspecific acceptable rangeduring driver on stateindicates short to powerfailure.

Controller specific outputdriver circuit voltagethresholds are set to meetthe following controllerspecification for a short topower.

0.5 impedancebetween signal andcontroller power.


Engine not cranking



= True

= True

====================

not Indeterminate


1 sec/ sampleContinuous

Type B,2 Trips



Component/System

FaultCode



IntakeCamshaftActuatorSolenoidCircuit Open– Bank 1

P0010 Controller specificoutput driver circuitdiagnoses the CAMphaser oil control valvesolenoid high sideddriver for an opencircuit failure when theoutput is powered onby comparing a voltagemeasurement tocontroller specificvoltage thresholds.

Voltage measurementoutside of controllerspecific acceptable rangeduring driver on stateindicates open circuitfailure.



System supply voltage

Output driver iscommanded on

Ignition switch is in crankor run position

> Volts11.00 20failures out of25samples

250 ms /sample,continuous

Type A,1 Trips



Component/System

FaultCode



IntakeCamshaftSystemPerformance– Bank 1

P0011 Detects a VVT systemerror by comparing thedesired and actual campositions when VVT isactivated.

Camshaft position error[absolute value of(desired position - actualposition)] is compared tothresholds to determine ifexcessive.

(Intake cam Bank 1)

Cam Position Error >(P0011_CamPosErrorLimIc1) deg

Intake Cam Phsr Enable

System Voltage

Engine Running

Power Take Off (PTO)active

Desired cam position

Desired AND Measuredcam position

Desired cam positionvariation

No Active DTCs

= TRUE

> Volts11.00

= TRUE

= FALSE

> 0 deg

>(P0011_CamPosErrorLimIc1) degAND<( )CalculatedPerfMaxIc1deg

< deg for3.00(P0011_P05CC_StablePositionTimeIc1) seconds

P0010P2088P2089

100.00failures out of125.00samples

100 ms /sample

Type A,1 Trips



Component/System

FaultCode



ExhaustCamshaftActuatorSolenoidCircuit Open– Bank 1

P0013 Controller specificoutput driver circuitdiagnoses the CAMphaser oil control valvesolenoid high sideddriver for an opencircuit failure when theoutput is powered onby comparing a voltagemeasurement tocontroller specificvoltage thresholds.

Voltage measurementoutside of controllerspecific acceptable rangeduring driver on stateindicates open circuitfailure.



System supply voltage

Output driver iscommanded on

Ignition switch is in crankor run position

> Volts11.00 20failures out of25samples

250 ms /sample,continuous

Type A,1 Trips



Component/System

FaultCode



ExhaustCamshaftSystemPerformance– Bank 1

P0014 Detects a VVT systemerror by comparing thedesired and actual campositions when VVT isactivated.

Camshaft position error[absolute value of(desired position - actualposition)] is compared tothresholds to determine ifexcessive.

(Exhaust cam Bank 1)

Cam Position Error >(P0014_CamPosErrorLimEc1) deg

Exhaust Cam PhsrEnable

System Voltage

Engine Running

Power Take Off (PTO)active

Desired cam position

Desired AND Measuredcam position

Desired cam positionvariation

No Active DTCs

= TRUE

> Volts11.00

= TRUE

= FALSE

> 0 deg

>(P0014_CamPosErrorLimEc1) degAND<( )CalculatedPerfMaxEc1deg

< deg for3.00(P0014_P05CE_StablePositionTimeEc1) seconds

P0013P2090P2091

100.00failures out of125.00samples

100 ms /sample

Type A,1 Trips



Component/System

FaultCode



CrankshaftPosition(CKP)-CamshaftPosition(CMP)CorrelationBank 1Sensor A(end-parkphaser)

P0016 Detects cam to crankmisalignment bymonitoring if the camsensor pulse for bank 1sensor A occurs duringthe incorrect crankposition, diagnosticpasses when the camsensor pulse is in theexpected range

cam sensor pulses4less thanorgreater thannominal positionin one cam revolution.

Crank Degrees-7.1

Crank Degrees8.3

Crankshaft and camshaftposition signals aresynchronized

Engine is Spinning

Cam phaser is in "parked"position

No Active DTCs:

Time since last executionof diagnostic

CrankSensor_FAP0340, P0341

< seconds1.0

2 failures out of 3tests.

A failed test is 4failures out of 5samples.

There is a delayafter the firstfailed test toallow thecamshaftposition to returnto the parkposition.

This time isdefined by thetable

.

P0016, P0017,P0018, P0019:CamCorrelation OilTemperatureThreshold

One sample percam rotation

Type B,2 Trips



Component/System

FaultCode



CrankshaftPosition(CKP)-CamshaftPosition(CMP)CorrelationBank 1Sensor B(end-parkphaser)

P0017 Detects cam to crankmisalignment bymonitoring if the camsensor pulse for bank 1sensor B occurs duringthe incorrect crankposition, diagnosticpasses when the camsensor pulse is in theexpected range

cam sensor pulses4less thanorgreater thannominal positionin one cam revolution..

Crank Degrees-8.4

Crank Degrees9.2

Crankshaft and camshaftposition signals aresynchronized

Engine is Spinning

Cam phaser is in "parked"position

No Active DTCs:

Time since last executionof diagnostic

CrankSensor_FAP0365, P0366

< seconds1.0

2 failures out of 3tests.

A failed test is 4failures out of 5samples.

There is a delayafter the firstfailed test toallow thecamshaftposition to returnto the parkposition.

This time isdefined by thetable

.

P0016, P0017,P0018, P0019:CamCorrelation OilTemperatureThreshold

One sample percam rotation

Type B,2 Trips



Component/System

FaultCode



O2S HeaterControlCircuit Bank1 Sensor 1

P0030 Controller specificoutput driver circuitdiagnoses the heateroutput low sided driverfor an open circuitfailure when the outputis powered off bycomparing a voltagemeasurement tocontroller specificvoltage thresholds.



200 K impedancebetween output andcontroller ground.

IgnitionVoltageEngine Speed

= Crank or Run> volts11.0> RPM400

failures out20of samples25

250 ms / sample

Continuous

Type B,2 TripsNote: Incertaincontrollers P0031may alsoset



Component/System

FaultCode



O2S HeaterControlCircuitBank1Sensor1

P0031 Controller specificoutput driver circuitdiagnoses the heateroutput low sided driverfor a short to groundfailure when the outputis powered off bycomparing a voltagemeasurement tocontroller specificvoltage thresholds.



0.5 impedancebetween output andcontroller ground.




250 ms / sample

Continuous




Component/System

FaultCode




P0032 Controller specificoutput driver circuitdiagnoses the heateroutput low sided driverfor a short to powerfailure when the outputis powered on bycomparing a voltagemeasurement tocontroller specificvoltage thresholds.



0.5 impedancebetween output andcontroller power.




250 ms / sample

Continuous

Type B,2 Trips



Component/System

FaultCode



Turbo/SuperChargerBypassValve AControlCircuit

P0033 Controller specificoutput driver circuitdiagnostic, diagnosingthe 'compressorrecirculation valve 'A'actuator' low sideddriver for an opencircuit failure, when theoutput is powered offby comparing a voltagemeasurement tocontroller specificvoltage thresholds.

In series applications,turbocharger 'A' is thefirst turbocharger in thedirection of exhaustflow. In parallelapplications,turbocharger 'A' isassociated with enginebank 1.



200 K impedancebetween output andcontroller ground

Diagnostic enabled*****************************Powertrain relay voltage*****************************Engine does not crank

Diagnostic system notdisabled

True*****************************>= Volts11.0*****************************


PWM CRV:100ms / sampleeCRV:12.5ms / sample

Type A,1 Trips

Note: Incertaincontrollers P0034may alsosetturbo/superchargerbypassvalvecontrolcircuitlow



Component/System

FaultCode



Turbo/SuperChargerBypassValve AControlCircuit Low

P0034 Controller specificoutput driver circuitdiagnostic, diagnosingthe 'compressorrecirculation valve 'A'actuator' low sideddriver for a short toground failure when theoutput is powered offby comparing a voltagemeasurement tocontroller specificvoltage thresholds.

In series application,turbocharger 'A' is thefirst turbocharger in thedirection of exhaustflow. In parallelapplications,turbocharger 'A' isassociated with enginebank 1.



In certain controllers thisdiagnosis runs only whenthe HWIO-output is drivenby the application S/W.

0.5 impedancebetween output andcontroller ground

Diagnostic Enabled*****************************Powertrain relay voltage*****************************Engine does not crank

Diagnostic system notdisabled

True*****************************>= Volts11.0*****************************



Type A,1 TripsNote: Incertaincontrollers P0033may alsosetturbo/superchargerbypassbalvecontrolcircuit



Component/System

FaultCode



Turbo/SuperChargerBypassValve AControlCircuit High

P0035 Controller specificoutput driver circuitdiagnostic, diagnosingthe 'compressorrecirculation valve 'A'actuator' low sideddriver for a short topower failure when theoutput is powered onby comparing a voltagemeasurement tocontroller specificvoltage thresholds.

In series application,turbocharger 'A' is thefirst turbocharger in thedirection of exhaustflow. In parallelapplications,turbocharger 'A' isassociated with enginebank 1.



In certain controllers thisdiagnosis runs only whenthe HWIO-output is drivenby the application S/W.


Diagnostic enabled*****************************Powertrain relay voltage*****************************Engine does not crankDiagnostic system notdisabled

True*****************************>= Volts11.0*****************************



Type A,1 Trips



Component/System

FaultCode



O2S HeaterControlCircuit Bank1 Sensor 2

P0036 Controller specificoutput driver circuitdiagnoses the heateroutput low sided driverfor an open circuitfailure when the outputis powered off bycomparing a voltagemeasurement tocontroller specificvoltage thresholds.



200 K impedancebetween output andcontroller ground.




250 ms / sample

Continuous




Component/System

FaultCode




P0037 Controller specificoutput driver circuitdiagnoses the heateroutput low sided driverfor a short to groundfailure when the outputis powered off bycomparing a voltagemeasurement tocontroller specificvoltage thresholds.



0.5 impedancebetween output andcontroller ground.




250 ms / sample

Continuous




Component/System

FaultCode




P0038 Controller specificoutput driver circuitdiagnoses the heateroutput low sided driverfor a short to powerfailure when the outputis powered on bycomparing a voltagemeasurement tocontroller specificvoltage thresholds.







250 ms / sample

Continuous

Type B,2 Trips



Component/System

FaultCode



HO2SHeaterResistanceBank 1Sensor 1

P0053 Detects an oxygensensor heater havingan incorrect or out ofrange resistance value.This test calculates theheater's resistance(using voltage andcurrent) at engine startafter a longer soakcondition andcompares it to theexpected values for thereleased sensor.

This fault is set if theheater resistance isoutside the expectedrange.

Heater Resistanceoutside of the expectedrange of < ohms

Component/System

FaultCode



HO2SHeaterResistanceBank 1Sensor 2)(For SingleBankExhaustOnly

P0054 Detects an oxygensensor heater havingan incorrect or out ofrange resistance value.This test calculates theheater's resistance(using voltage andcurrent) at engine startafter a soak conditionand compares it to theexpected values for thereleased sensor.

This fault is set if theheater resistance isoutside the expectedrange.

Heater Resistanceoutside of the expectedrange of < ohms

Component/System

FaultCode



MAP / MAF /ThrottlePositionCorrelation

P0068 Detect when MAP andMAF do not matchestimated engineairflow as establishedby the TPS

Difference between MAPand estimated MAPexceeds threshold (kPa),or P0651 (5 Volt Ref), orP0107 (MAP circuit low),or P0108 (MAP circuithigh) have failed this keycycle, then MAP portion ofdiagnostic fails

Absolute differencebetween MAF andestimated MAF exceedthreshold (grams/sec), orP0102 (MAF circuit low),or P0103 (MAF circuit hi)have failed this key cycle,or maximum MAF versusRPM (Table) is greaterthan or equal to maximumMAF versus batteryvoltage, then MAF portionof diagnostic fails

Table, f(TPS). Seesupporting tables:P0068_Delta MAPThreshold f(TPS)

Table, f(TPS). Seesupporting tables:P0068_Delta MAFThreshold f(TPS)

Table, f(RPM). Seesupporting tables:P0068_MaximumMAF f(RPM)

Table, f(Volts). Seesupporting tables:P0068_MaximumMAF f(Volts)

Engine Speed

Run/Crank voltage

> RPM800

> Volts6.41

Continuously failMAP and MAFportions ofdiagnostic for

s0.1875

Continuous inMAIN processor

Type A,1 Trips



Component/System

FaultCode



Engine Off:

If IAT >= OAT:IAT - OAT

If IAT < OAT:OAT - IAT

If either of the followingconditions are met, thisdiagnostic will pass:



> deg C15.0

> deg C15.0

= MPH15.5

< deg C15.0

< deg C15.0

>= counts300.0

VehicleSpeedSensor_FAIAT_SensorFAECT_Sensor_DefaultDetectedMAF_SensorFA

Executed every100 msec until apass or faildecision is made

Outside AirTemperature(OAT)SensorCircuitPerformance(OAT wiredto ECM)

P0071 Detects an Outside AirTemperature (OAT)sensor that is stuck inrange. There are twocomponents to the test:an engine offcomponent, and anengine runningcomponent.

If the engine has beenoff for a long enoughperiod of time, and thecoolant temperatureand Intake AirTemperature (IAT)values are similar, thenthe air temperaturevalues in the enginecompartment of thevehicle are consideredto have equalized. Inthis case, the engineoff component of thediagnostic can beenabled.

If the IAT and the OATvalues are similar, thenthe OAT PerformanceDiagnostic passes. Ifthe IAT and OAT valuesare not similar, thediagnostic will continueto monitor the IAT andthe OAT as the vehiclestarts to move.

For applications thathave ability to movewithout engaging the

Type B,2 Trips



Component/System

FaultCode



EngineModeNotRunTimerError

internal combustionengine, the engine offtest will continue. If thevehicle has beenmoving quickly enoughfor a long enoughperiod of time, the IATand OAT values shouldhave reached anequilibrium. Thisperiod of time isdefined by the "OAT-to-IAT engine offequilibrium counter".The "OAT-to-IATengine off equilibriumcounter" is a counterthat is incremented ordecremented based onvehicle speed when theengine is off. Whenthis counter is highenough, the vehiclehas reached anequilibrium where IATand OAT can becompared.

While the "OAT-to-IATengine off equilibriumcounter" is counting,IAT and OAT aremonitored for similarity.If they are similar, theOAT PerformanceDiagnostic passes. Ifthe counter reaches anequilibrium and the IATand OAT values are notsimilar, the OATPerformanceDiagnostic will fail.

Engine Running:



If either of the followingconditions are met, thisdiagnostic will pass:



> deg C15.0

> deg C15.0

= MPH15.5

>= grams/second10.0

>= counts300.0

VehicleSpeedSensor_FAIAT_SensorFA

Executed every100 msec until apass or faildecision is made



Component/System

FaultCode



If the engine offcomponent of thediagnostic wasenabled, but did notmake a pass or faildecision, the enginerunning component willbegin executing whenthe internal combustionengine starts to run.

If the vehicle has beenmoving quickly enoughfor a long enoughperiod of time, the IATand OAT values shouldhave reached anequilibrium. Thisperiod of time isdefined by the "OAT-to-IAT engine runningequilibrium counter".The "OAT-to-IATengine runningequilibrium counter" isa counter that isincremented ordecremented based onvehicle speed when theengine is running.When this counter ishigh enough, thevehicle has reached anequilibrium where IATand OAT can becompared.

While the "OAT-to-IATengine runningequilibrium counter" iscounting, IAT and OAT

ECT_Sensor_DefaultDetectedMAF_SensorFAEngineModeNotRunTimerError



Component/System

FaultCode



are monitored forsimilarity. If they aresimilar, the OATPerformanceDiagnostic passes. Ifthe counter reaches anequilibrium and the IATand OAT values are notsimilar, the OATPerformanceDiagnostic will fail.



Component/System

FaultCode



Outside AirTemperature(OAT)SensorCircuit Low

P0072 Detects a continuousshort to ground in theOutside AirTemperature (OAT)signal circuit bymonitoring the OATsensor outputresistance and failingthe diagnostic when theOAT resistance is toolow. The OAT sensor isa thermistor in whichthe resistance acrossthe sensor can beequated to atemperature. A lowerresistance is equivalentto a highertemperature.

Raw OAT Input

Component/System

FaultCode



Outside AirTemperature(OAT)SensorCircuit High

P0073 Detects a continuousopen circuit in theOutside AirTemperature (OAT)signal circuit bymonitoring the OATsensor outputresistance and failingthe diagnostic when theOAT resistance is toohigh. The OAT sensoris a thermistor in whichthe resistance acrossthe sensor can beequated to atemperature. A higherresistance is equivalentto a lower temperature.

Raw OAT Input >= Ohms403,672(~-60 deg C)

Continuous failures out40of samples50

1 sample every100 msec

Type B,2 Trips



Component/System

FaultCode



Outside AirTemperature(OAT)SensorIntermittentIn-Range

P0074 Detects a noisy orerratic signal in theOAT circuit bymonitoring the OATsensor and failing thediagnostic when theOAT signal has anoisier output than isexpected.

When the value of theOAT signal in °C isdetermined, a delta iscalculated between thecurrent reading and theprevious reading. Theabsolute value of thesedeltas is summed overa number of OATreadings. The result ofthis summation iscalled a “string length”.

Since the OAT signal isanticipated to berelatively smooth, astring length of aparticular magnitudeindicates a noisy orerratic OAT signal. Thediagnostic will fail if thestring length is toohigh.

String Length

Where:

"String Length" = sum of"Diff" calculated over

And where:"Diff" = ABS(current OATreading - OAT readingfrom 100 millisecondsprevious)

> deg C100

consecutive OAT10readings

Continuous failures out of4samples5

Each sampletakes 1.0seconds

Type B,2 Trips



Component/System

FaultCode



InternalControlModule SIDIHighPressurePump min/maxauthority

P0089 This DTC determineswhen the high pressurepump control hasreached to its max ormin authority

High Pressure Fuel PumpDelivery Angle

OR

High Pressure Fuel PumpDelivery Angle

>= °92

= Volts11

> MPa0.300

Enabled when a codeclear is not active or notexiting device control

Engine is not cranking

>= KPA70.0>= degC-10.0

Component/System

FaultCode



assembly plant) is notenabled andNot if low fuel conditionandLow side Fuel Pump is onandInjector Flow Test is notactive andDevice controlcommanded pressure isfalse andDevice control pump cktenabled on is false andEngine movementdetected is trueandManufacturers enablecounter is 0)Flex Fuel Sensor Not FAIgnition voltage out ofcorrelation error(P1682)not active



Component/System

FaultCode



HighPressurePumpControlSolenoidEnable LowSide OpenCircuit

P0090 Controller specificoutput driver circuitdiagnoses HighPressure pump ControlSolenoid low sideddriver for an opencircuit failure when theoutput is powered offby comparing a voltagemeasurement tocontroller specificvoltage thresholds



>= 200 KOhmsimpedance betweensignal and controllerground

Engine Speed

Battery Voltage

>= RPM50

>= Volts11

Not in pump devicecontrolEnabled when a codeclear is not active or notexiting device control

20failures out of40samples100 ms /sampleContinuous

Type A,1 Trips



Component/System

FaultCode



HighPressurePumpControlSolenoidEnable LowSide Short toGround

P0091 Controller specificoutput driver circuitdiagnoses HighPressure pump ControlSolenoid low sideddriver for a short toground failure when theoutput is powered offby comparing a voltagemeasurement tocontroller specificvoltage thresholds.



= RPM50

>= Volts11



Type A,1 Trips



Component/System

FaultCode



HighPressurePump CntrlSolenoidEnable LowSide Short toPower

P0092 Controller specificoutput driver circuitdiagnoses diagnosesHigh Pressure pumpControl Solenoid lowsided driver for a shortto power failure whenthe output is poweredon by comparing avoltage measurementto controller specificvoltage thresholds.



= RPM50>= Volts11



Type A,1 Trips



Component/System

FaultCode



Good CorrelationBetween IAT and IAT3:

ABS(Power Up IAT -Power Up IAT2)

AND


AND

ABS(Power Up IAT2 -Power Up IAT3)

> deg C25

deg C25

Time between currentignition cycle and the lasttime the engine wasrunning

Powertrain Relay Voltagefor a time

No Active DTCs:

> seconds28,800

>= Volts11.0>= seconds0.9

PowertrainRelayFaultECT_Sensor_Ckt_FAIAT_SensorCircuitFAMnfdTempSensorCktFAHumTempSnsrCktFAEngineModeNotRunTimerError

Executes once atthe beginning ofeach ignitioncycle if enableconditions aremet

Intake AirTemperatureSensor 2CircuitPerformance(applicationswith humiditysensor andmanifoldtemperaturesensor)

P0096 Detects an Intake AirTemperature 2 (IAT2)sensor value that isstuck in range bycomparing the IAT2sensor value againstthe IAT and IAT3sensor values andfailing the diagnostic ifthe IAT2 value is moredifferent than the IATand IAT3 values than isexpected. If the enginehas been off for a longenough period of time,the air temperaturevalues in the enginecompartment of thevehicle are consideredto have equalized, andthe diagnostic can beenabled.

The diagnostic will fail ifthe IAT and IAT3values are similar, andthe IAT2 value is notsimilar to the IAT andIAT3 values. Thediagnostic will also failif none of the threesensor values aresimilar to each other,and the IAT2 value isfurthest from thesensor value that is inthe middle of the threesensor values.

This diagnostic isexecuted once per

Type B,2 Trips

Not Good Correlation,IAT in middle:

Power Up IAT isbetween Power Up IAT2and Power Up IAT3

AND


AND

ABS(Power Up IAT -Power Up IAT2) >ABS(Power Up IAT -Power Up IAT3)

> deg C25



No Active DTCs:

> seconds28,800




Not Good Correlation,IAT3 in middle:

Power Up IAT3 isbetween Power Up IATand Power Up IAT2



> seconds28,800





Component/System

FaultCode



ignition cycle if theenable conditions aremet.

AND


AND

ABS(Power Up IAT3 -Power Up IAT2) >ABS(Power Up IAT3 -Power Up IAT)

> deg C25

No Active DTCs: PowertrainRelayFaultECT_Sensor_Ckt_FAIAT_SensorCircuitFAMnfdTempSensorCktFAHumTempSnsrCktFAEngineModeNotRunTimerError



Component/System

FaultCode



Intake AirTemperatureSensorCircuit 2 Low(applicationswithhumidity)

P0097 Detects a continuousshort to ground in theIntake Air Temperature2 (IAT2) signal circuit oran IAT2 sensor that isoutputting a frequencysignal that is too low.The diagnosticmonitors the IAT2sensor outputfrequency and fails thediagnostic when theIAT2 frequency is toolow.

The IAT2 sensor is athermistor in which theresistance across thesensor can be equatedto a temperature. Thetemperature value isconverted by thesensor to a frequencyvalue in Hertz. A digitalsquare wave signal istransmitted by thesensor to the ECM.The ECM calculatesthe frequency of thesquare wave signal andconverts that frequencyto a temperature value.A lower frequency isequivalent to a lowertemperature.

This diagnostic isenabled if thePowertrain Relayvoltage is high enough.

Raw IAT 2 Input < Hertz13(~-60 deg C)


No Active DTCs:


PowertrainRelayFault



Type B,2 Trips



Component/System

FaultCode



Intake AirTemperatureSensorCircuit 2High(applicationswithhumidity)

P0098 Detects an Intake AirTemperature 2 (IAT2)sensor that isoutputting a frequencysignal that is too high.The diagnosticmonitors the IAT2sensor outputfrequency and fails thediagnostic when theIAT2 frequency is toohigh.

The IAT2 sensor is athermistor in which theresistance across thesensor can be equatedto a temperature. Thetemperature value isconverted by thesensor to a frequencyvalue in Hertz. A digitalsquare wave signal istransmitted by thesensor to the ECM.The ECM calculatesthe frequency of thesquare wave signal andconverts that frequencyto a temperature value.A higher frequency isequivalent to a highertemperature.


Raw IAT 2 Input > Hertz390(~150 deg C)


No Active DTCs:





Type B,2 Trips



Component/System

FaultCode



Intake AirTemperatureSensor 2IntermittentIn-Range(applicationswithhumidity)

P0099 Detects a noisy orerratic signal in theIntake Air Temperature2 (IAT2) circuit bymonitoring the IAT2sensor and failing thediagnostic when theIAT2 signal has anoisier output than isexpected.

When the value of theIAT2 signal in °C isdetermined, a delta iscalculated between thecurrent reading and theprevious reading. Theabsolute value of thesedeltas is summed overa number of IAT2readings. The result ofthis summation iscalled a “string length”.Since the IAT2 signal isanticipated to berelatively smooth, astring length of aparticular magnitudeindicates a noisy orerratic IAT2 signal. Thediagnostic will fail if thestring length is toohigh.


String Length

Where:"String Length" = sum of"Diff" calculated over

And where:"Diff" = ABS(current IAT 2reading - IAT 2 readingfrom 100 millisecondsprevious)

> deg C100.00

consecutive IAT 210readings


No Active DTCs:





Type B,2 Trips



Component/System

FaultCode



HighPressureStartDiagnostic

P00C6 The DTC Diagnosesthe high side fuelpressure during enginecranking.

The ECM detects that thefuel pressure is not risingor has fallen beyondacceptable limits duringengine cranking

Pressure Rise Test:Sensed High PressureFuel Rail Pressure value

Pressure Fall Test:Sensed High PressureFuel Rail Pressure value

<P00C6 - Minimumpressure in MPa thatwill exit HighPressure Start modeand allow fueldelivery(see Supporting Table)

= KPA0

< = sec0> Volts8

=P00C6 -maximumacceptablecounts of fuelrail pressurebelowKtFHPD_p_HPS_PressFallLoThrsh after HighPressure Start(see SupportingTable)

samples per4engine rotation

Type B,2 Trips



Component/System

FaultCode



Barometric PressureInlet Air Temp

commanded pressure isfalse andDevice control pump cktenabled on is false andEngine movementdetected is true andManufacturers enablecounter is 0)Flex Fuel Sensor Not FAIgnition voltage out ofcorrelation error(P1682)not active>= KPA70.0>= DegC-10.0



Component/System

FaultCode



Intake AirPressureMeasurement System -MultipleSensorCorrelation(single turbo)

P00C7 Detects aninconsistency betweenpressure sensors in theinduction system inwhich a particularsensor cannot beidentified as the failedsensor.

If the engine has beenoff for a sufficientamount of time, thepressure values in theinduction system willhave equalized. TheManifold Pressure(MAP), TurbochargerBoost Pressure andBarometric Pressure(BARO) sensors valuesare checked to see ifthey are within thenormal expectedatmospheric pressurerange. If they are, thenMAP, TurbochargerBoost Pressure andBARO are compared tosee if their values aresimilar.

If two of these threesensors are similar, butthe third is not, then aperformance diagnosticfor the specific sensorwith the dissimilarvalue will fail.

If there is nocombination of two of

ABS(Manifold Pressure -Baro Pressure)ANDABS(Turbocharger BoostPressure - ManifoldPressure)ANDABS(Turbocharger BoostPressure - Baro Pressure)

OR


OR


OR

ABS(Manifold Pressure -Baro Pressure)ANDABS(Turbocharger BoostPressure - Manifold

> kPa10.0

Component/System

FaultCode



these three sensorsthat is similar, then thefailed sensor cannot beuniquely identified.The Multiple PressureSensor CorrelationDiagnostic will fail inthis case.

Pressure)ANDABS(Turbocharger BoostPressure - Baro Pressure)

> kPa10.0

> kPa10.0



Component/System

FaultCode



Fuel PressRegulatorSolenoidSupplyVoltageControl HighSide CircuitShort toground

P00C9 Controller specificoutput driver circuitdiagnoses HighPressure pump ControlSolenoid high sideddriver for a short toground failure when theoutput is powered onby comparing a voltagemeasurement tocontroller specificvoltage thresholds.

Voltage measurementoutside of controllerspecific acceptable rangeduring driver on stateindicates short to groundfailure.


= RPM50>= Volts11



Type A,1 Trips



Component/System

FaultCode



Fuel PressRegulatorSolenoidSupplyVoltageControl HighSide CircuitShort topower

P00CA Controller specificoutput driver circuitdiagnoses HighPressure pump ControlSolenoid high sideddriver for a short topower failure when theoutput is powered offby comparing a voltagemeasurement tocontroller specificvoltage thresholds.

Voltage measurementoutside of controllerspecific acceptable rangeduring driver off stateindicates short to powerfailure.


= RPM50>= Volts11



Type A,1 Trips



Component/System

FaultCode



Good CorrelationBetween IAT and IAT2:


AND


AND


deg C25

> deg C25



No Active DTCs:

> seconds28,800




Intake AirTemperatureSensor 3CircuitPerformance(applicationswith humiditysensor andmanifoldtemperaturesensor)

P00E9 Detects an Intake AirTemperature 3 (IAT3)sensor value that isstuck in range bycomparing the IAT3sensor value againstthe IAT and IAT2sensor values andfailing the diagnostic ifthe IAT3 value is moredifferent than the IATand IAT2 values than isexpected. If the enginehas been off for a longenough period of time,the air temperaturevalues in the enginecompartment of thevehicle are consideredto have equalized, andthe diagnostic can beenabled.

The diagnostic will fail ifthe IAT and IAT2values are similar, andthe IAT3 value is notsimilar to the IAT andIAT2 values. Thediagnostic will also failif none of the threesensor values aresimilar to each other,and the IAT3 value isfurthest from thesensor value that is inthe middle of the threesensor values.


Type B,2 Trips

Not Good Correlation,IAT in Middle:

Power Up IAT isbetween Power Up IAT2and Power Up IAT3

AND


AND

ABS(Power Up IAT -Power Up IAT3) >ABS(Power Up IAT -Power Up IAT2)

> deg C25



No Active DTCs:

> seconds28,800




Not Good Correlation,IAT2 in Middle:




> seconds28,800





Component/System

FaultCode




AND


AND

ABS(Power Up IAT2 -Power Up IAT3) >ABS(Power Up IAT2 -Power Up IAT)

> deg C25




Component/System

FaultCode



Intake AirTemperatureSensorCircuit 3 Low(applicationswith manifoldtemperatureandhumidity)

P00EA Detects a continuousshort to ground in theIntake Air Temperature3 (IAT3) signal circuitby monitoring the IAT3sensor outputresistance and failingthe diagnostic when theIAT3 resistance is toolow. The IAT3 sensoris a thermistor in whichthe resistance acrossthe sensor can beequated to atemperature. A lowerresistance is equivalentto a highertemperature.

Raw IAT 3 Input < Ohms56.52(~150 deg C)

Engine Run Time > seconds0.00 failures out40of samples50


Type B,2 Trips



Component/System

FaultCode



Intake AirTemperatureSensorCircuit 3High(applicationswith manifoldtemperatureandhumidity)

P00EB Detects a continuousopen circuit in theIntake Air Temperature3 (IAT3) signal circuitby monitoring the IAT3sensor outputresistance and failingthe diagnostic when theIAT3 resistance is toohigh. The IAT3 sensoris a thermistor in whichthe resistance acrossthe sensor can beequated to atemperature. A higherresistance is equivalentto a lower temperature.

Raw IAT 3 Input > Ohms162,529(~-60 deg C)



Type B,2 Trips



Component/System

FaultCode



Intake AirTemperatureSensor 3IntermittentIn-Range

P00EC Detects a noisy orerratic signal in theIntake Air Temperature3 (IAT3) circuit bymonitoring the IAT3sensor and failing thediagnostic when theIAT3 signal has anoisier output than isexpected.

When the value of theIAT3 signal in °C isdetermined, a delta iscalculated between thecurrent reading and theprevious reading. Theabsolute value of thesedeltas is summed overa number of IAT3readings. The result ofthis summation iscalled a “string length”.

Since the IAT3 signal isanticipated to berelatively smooth, astring length of aparticular magnitudeindicates a noisy orerratic IAT3 signal. Thediagnostic will fail if thestring length is toohigh.

String Length


And where:"Diff" = ABS(current IAT 3reading - IAT 3 readingfrom 100 millisecondsprevious)

> deg C80.00

consecutive IAT 310readings



Type B,2 Trips



Component/System

FaultCode



HumiditySensorCircuit Low

P00F4 Detects a continuousshort to ground in thehumidity signal circuitor a humidity sensorthat is outputting a dutycycle that is too low.The diagnosticmonitors the humiditysensor duty cycleoutput and fails thediagnostic when thehumidity duty cycle istoo low.

The humidity sensorconverts thecapacitance across thesensor to a relativehumidity. The relativehumidity value isconverted by thesensor to a duty cyclevalue in %. A digitalsquare wave signal istransmitted by thesensor to the ECM.The ECM calculatesthe duty cycle of thesquare wave signal andconverts that duty cycleto a relative humidityvalue in % through atransfer function.


Humidity Duty Cycle = Volts11.0>= seconds0.9




Type B,2 Trips



Component/System

FaultCode



HumiditySensorCircuit High

P00F5 Detects a humiditysensor that isoutputting a duty cyclesignal that is too high.The diagnosticmonitors the humiditysensor duty cycleoutput and fails thediagnostic when thehumidity duty cycle istoo high.

The humidity sensorconverts thecapacitance across thesensor to a relativehumidity. The relativehumidity value isconverted by thesensor to a duty cyclevalue in %. A digitalsquare wave signal istransmitted by thesensor to the ECM.The ECM calculatesthe duty cycle of thesquare wave signal andconverts that duty cycleto a relative humidityvalue in % through atransfer function.


Humidity Duty Cycle >= %95.0 Powertrain Relay Voltagefor a time

No Active DTCs:





Type B,2 Trips



Component/System

FaultCode



HumiditySensorCircuitIntermittent

P00F6 Detects a noisy orerratic signal in thehumidity circuit bymonitoring the humiditysensor and failing thediagnostic when thehumidity signal has anoisier output than isexpected.

When the value ofrelative humidity in % isdetermined, a delta iscalculated between thecurrent reading and theprevious reading. Theabsolute value of thesedeltas is summed overa number of humidityreadings. The result ofthis summation iscalled a “string length”.

Since the humiditysignal is anticipated tobe relatively smooth, astring length of aparticular magnitudeindicates a noisy orerratic humidity signal.The diagnostic will fail ifthe string length is toohigh.


String Length


And where:"Diff" = ABS(currentHumidity reading -Humidity reading from100 millisecondsprevious)

> %80

consecutive10Humidity readings


No Active DTCs:





Type B,2 Trips



Component/System

FaultCode



Mass AirFlow SystemPerformance(single turbo)

P0101 Detects a performancefailure in the Mass AirFlow (MAF) sensor,such as when a MAFvalue is stuck in range.

This diagnostic isperformed using theIntake Flow RationalityDiagnostic (IFRD).IFRD calculatesmodeled values ofsensors from othersensors. The othersensors are theManifold Pressure(MAP) sensor,Turbocharger BoostPressure sensor andThrottle Position sensor(TPS).

These modeled valuesare compared againstthe actual sensorvalues to see if theyare similar. If they aresimilar, then the modelpasses. If they are notsimilar, then that modelis considered to befailed. Certaincombinations of modelpasses and modelfailures can beinterpreted to becaused by aperformance issue withthe MAF sensor. In thiscase, the MAFPerformance diagnostic

See tableP0101, P0106, P010B,P0121, P0236, P1101:Turbocharger IntakeFlow RationalityDiagnostic FailureMatrixfor combinationsof model failures that canset this DTC.

MAF model fails whenABS(Measured Flow –Modeled Air Flow) Filtered

MAP1 model fails whenABS(Measured MAP –MAP Model 1) Filtered



TIAP1 model fails whenABS(Measured TIAP –TIAP Model 1) Filtered

TPS model fails whenFiltered Throttle ModelError

TIAP Correlation modelfails whenHigh Engine Air Flow isTRUEAND

> grams/sec20.0

> kPa23.0

> kPa25.0

> kPa25.0

> kPa30.0

> kPa*(g/s)175

Engine SpeedEngine Speed

(Coolant TempOROBD Coolant EnableCriteria

(Coolant TempOROBD Max CoolantAchieved

Intake Air TempIntake Air Temp

Minimum total weightfactor (all factorsmultiplied together)

See Residual WeightFactor tables.

>= RPM400= Deg C-7

= TRUE)

= Deg C-20= 0.50

Modeled Air Flow Errormultiplied byP0101, P0106, P010B,P0121, P012B, P0236,P1101: MAF1 ResidualWeight Factor based onRPMandP0101, P0106, P010B,P0121, P012B, P0236,P1101: MAF1 ResidualWeight Factor based onMAF Est

MAP Model 1 Errormultiplied byP0101, P0106, P0121,P012B, P0236, P1101:MAP1 Residual WeightFactor based on RPM

Continuous

Calculation areperformed every12.5 msec

Type B,2 Trips



Component/System

FaultCode



will fail. Measured TIAP -measured MAP -offset as a function ofengine speedSee tableP0101, P0106, P0121,P0236, P1101: TIAP-MAP Correlation Offset

OR

Low Engine Air Flow isTRUEANDMeasured TIAP -measured Baro -offset as a function ofengine speedSee tableP0101, P0106, P0121,P0236, P1101: TIAP-Baro Correlation Offset

TIAP Correlation is validwhenHigh Engine Air Flow hasbeen TRUE for a period oftimeORLow Engine Air Flow hasbeen TRUE for a period oftime

High Engine Air Flow isTRUE whenMass Air Flow

-

> kPa30.0

> kPa30.0

> seconds1.0

> seconds1.0

> a threshold ingm/sec as a functionof engine speed.See table

No Active DTCs:

No Pending DTCs:



TIAP Model 1 Errormultiplied byP0101, P0106, P0121,P0236, P1101: TIAPResidual Weight Factorbased on RPM

Filtered Throttle ModelError multiplied byP0101, P0106, P0121,P012B, P0236, P1101:TPS Residual WeightFactor based on RPM

MAP_SensorCircuitFAEGRValvePerformance_FAMAF_SensorCircuitFACrankSensor_FAECT_Sensor_FAIAT_SensorFAMnfdTempSensorFATC_BoostPresSnsrCktFAAmbientAirDefault

EGRValve_FPECT_Sensor_Ckt_FPIAT_SensorCircuitFP



Component/System

FaultCode



ANDManifold Pressure

ANDFiltered Mass Air Flow -Mass Air Flow

Low Engine Air Flow isTRUE whenMass Air Flow


ANDMass Air Flow - FilteredMass Air Flow

P0101, P0106, P0121,P0236, P1101: TIAP-MAP Correlation MinAir Flow

> a threshold in kPaas a function ofengine speed.See tableP0101, P0106, P0121,P0236, P1101: TIAP-MAP Correlation MinMAP

< gm/sec1.3

< a threshold ingm/sec as a functionof engine speed.See tableP0101, P0106, P0121,P0236, P1101: TIAP-Baro Correlation MaxAir Flow

< a threshold in kPa asa function of enginespeed. See tableP0101, P0106, P0121,P0236, P1101: TIAP-Baro Correlation MaxMAP

< gm/sec2.0

MnfdTempSensorCktFP



Component/System

FaultCode



Mass AirFlow SensorCircuit LowFrequency

P0102 Detects a continuousshort to ground in theMAF sensor circuit or aMAF sensor that isoutputting a frequencythat is too low. Thediagnostic monitors theMAF sensor frequencyoutput and fails thediagnostic when theMAF frequency is toolow.

The MAF sensormonitors thetemperature of a circuitin the air flow of theengine. Thetemperature of thiscircuit is related to theair velocity across thesensor. The MAFsensor converts this airvelocity to a mass airflow value. The massair flow value isconverted by thesensor to a frequencyvalue in Hertz. A digitalsquare wave signal istransmitted by thesensor to the ECM.The ECM calculatesthe frequency of thesquare wave signal andconverts that frequencyto a mass air flow valuein grams/secondthrough a transferfunction.

MAF Output seconds1.0>= RPM300>= Volts10.0

>= seconds1.0


1 sample everycylinder firingevent

Type B,2 Trips



Component/System

FaultCode



Mass AirFlow SensorCircuit HighFrequency

P0103 Detects a MAF sensorthat is outputting afrequency signal that istoo high. Thediagnostic monitors theMAF sensor frequencyoutput and fails thediagnostic when theMAF frequency is toohigh.

The MAF sensormonitors thetemperature of a circuitin the air flow of theengine. Thetemperature of thiscircuit is related to theair velocity across thesensor. The MAFsensor converts this airvelocity to a mass airflow value. The massair flow value isconverted by thesensor to a frequencyvalue in Hertz. A digitalsquare wave signal istransmitted by thesensor to the ECM.The ECM calculatesthe frequency of thesquare wave signal andconverts that frequencyto a mass air flow valuein grams/secondthrough a transferfunction.

MAF Output >= Hertz14,500(~ gm/sec)41.1

Engine Run TimeEngine SpeedIgnition VoltageAbove criteria present fora period of time

> seconds1.0>= RPM300>= Volts10.0

>= seconds1.0


1 sample everycylinder firingevent

Type B,2 Trips



Component/System

FaultCode



Engine Running:

See tableP0101, P0106, P010B,P0121, P0236, P1101:Turbocharger IntakeFlow RationalityDiagnostic FailureMatrixfor combinationsof model failures that canset this DTC.







TIAP Correlation modelfails when

High Engine Air Flow isTRUE

> grams/sec20.0

> kPa23.0

> kPa25.0

> kPa25.0

> kPa30.0

> kPa*(g/s)175

Engine SpeedEngine Speed

(Coolant TempOROBD Coolant EnableCriteria

(Coolant TempOROBD Max CoolantAchieved

Intake Air TempIntake Air Temp

Minimum total weightfactor (all factorsmultiplied together)

See Residual WeightFactor tables.

>= RPM400= Deg C-7

= TRUE)

= Deg C-20= 0.50

Modeled Air Flow Errormultiplied byP0101, P0106, P010B,P0121, P012B, P0236,P1101: MAF1 ResidualWeight Factor based onRPMandP0101, P0106, P010B,P0121, P012B, P0236,P1101: MAF1 ResidualWeight Factor based onMAF Est


MAP Model 2 Error

Continuous

Calculation areperformed every12.5 msec

ManifoldAbsolutePressureSensorPerformance(single turbo)

P0106 Detects a performancefailure in the ManifoldPressure (MAP)sensor, such as when aMAP value is stuck inrange.

If the engine has beenoff for a sufficientamount of time, thepressure values in theinduction system willhave equalized. TheMAP sensor value ischecked to see if it iswithin the normalexpected atmosphericpressure range. If it isnot, then the MAPperformance diagnosticwill fail.

If the MAP sensorvalue is within thenormal expectedatmospheric range,then MAP,Turbocharger BoostPressure, andBarometric Pressure(BARO) are comparedto see if their valuesare similar. If theTurbocharger BoostPressure and BAROsensor values aresimilar, but the MAPvalue is not similar,then a MAPperformance diagnosticwill fail.

Type B,2 Trips



Component/System

FaultCode



ANDMeasured TIAP -measured MAP -offset as a function ofengine speedSee tableP0101, P0106, P0121,P0236, P1101: TIAP-MAP Correlation Offset

OR

Low Engine Air Flow isTRUEANDMeasured TIAP -measured Baro -offset as a function ofengine speedSee tableP0101, P0106, P0121,P0236, P1101: TIAP-Baro Correlation Offset

TIAP Correlation is validwhen

High Engine Air Flow hasbeen TRUE for a period oftimeORLow Engine Air Flow hasbeen TRUE for a period oftime

High Engine Air Flow isTRUE whenMass Air Flow

-

> kPa30.0

> kPa30.0

> seconds1.0

> seconds1.0

> a threshold ingm/sec as a functionof engine speedSee table

No Active DTCs:

No Pending DTCs:

multiplied byP0101, P0106, P0121,P012B, P0236, P1101:MAP2 Residual WeightFactor based on RPM


TIAP Model 1 Errormultiplied byP0101, P0106, P0121,P0236, P1101: TIAPResidual Weight Factorbased on RPM

Filtered Throttle ModelError multiplied byP0101, P0106, P0121,P012B, P0236, P1101:TPS Residual WeightFactor based on RPM

MAP_SensorCircuitFAEGRValvePerformance_FAMAF_SensorCircuitFACrankSensor_FAECT_Sensor_FAIAT_SensorFAMnfdTempSensorFATC_BoostPresSnsrCktFAAmbientAirDefault

EGRValve_FPECT_Sensor_Ckt_FPIAT_SensorCircuitFP

The engine runningportion of thisdiagnostic is performedusing the Intake FlowRationality Diagnostic(IFRD). IFRDcalculates modeledvalues of sensors fromother sensors. Theother sensors are theMass Air Flow (MAF)sensor, TurbochargerBoost Pressure sensorand Throttle Positionsensor (TPS).

These modeled valuesare compared againstthe actual sensorvalues to see if theyare similar. If they aresimilar, then the modelpasses. If they are notsimilar, then that modelis considered to befailed. Certaincombinations of modelpasses and modelfailures can beinterpreted to becaused by aperformance issue withthe MAP sensor. In thiscase, the MAPPerformance diagnosticwill fail.



Component/System

FaultCode




ANDFiltered Mass Air Flow -Mass Air Flow

Low Engine Air Flow isTRUE whenMass Air Flow


ANDMass Air Flow - FilteredMass Air Flow

P0101, P0106, P0121,P0236, P1101: TIAP-MAP Correlation MinAir Flow

> a threshold in kPaas a function ofengine speedSee tableP0101, P0106, P0121,P0236, P1101: TIAP-MAP Correlation MinMAP

< gm/sec1.3

< a threshold ingm/sec as a functionof engine speedSee tableP0101, P0106, P0121,P0236, P1101: TIAP-Baro Correlation MaxAir Flow

< a threshold in kPaas a function ofengine speedSee tableP0101, P0106, P0121,P0236, P1101: TIAP-Baro Correlation MaxMAP

< gm/sec2.0

MnfdTempSensorCktFP

Engine Not Rotating:

Manifold Pressure < kPa50.0

Time between currentignition cycle and the lasttime the engine was




Component/System

FaultCode



ORManifold Pressure

OR


> kPa115.0

> kPa10.0

> kPa10.0

seconds10.0

EngineModeNotRunTimerErrorMAP_SensorCircuitFAAAP_SnsrCktFAAAP2_SnsrCktFA

MAP_SensorCircuitFPAAP_SnsrCktFPAAP2_SnsrCktFP

1 sample every12.5 msec



Component/System

FaultCode



ManifoldAbsolutePressureSensorCircuit Low(Gen III)

P0107 Detects a continuousshort to ground in theManifold AbsolutePressure (MAP) signalcircuit by monitoringthe MAP sensor outputvoltage and failing thediagnostic when theMAP voltage is too low.The MAP sensor is apressure transducerwhich outputs a voltageproportional to theabsolute pressure.

MAP Voltage < % of 5 Volt3.3Range(This is equal to 7.5kPa)



Type B,2 Trips



Component/System

FaultCode



ManifoldAbsolutePressureSensorCircuit High(Gen III)

P0108 Detects a continuousshort to power or opencircuit in the ManifoldAbsolute Pressure(MAP) signal circuit bymonitoring the MAPsensor output voltageand failing thediagnostic when theMAP voltage is toohigh. The MAP sensoris a pressuretransducer whichoutputs a voltageproportional to theabsolute pressure.

MAP Voltage > % of 5 Volt86.0Range(This is equal to 372.0kPa)



Type B,2 Trips



Component/System

FaultCode



Good CorrelationBetween IAT2 and IAT3


AND


AND


> deg C25

> deg C25

seconds28,800




Intake AirTemperatureSensorCircuitPerformance(applicationswith humiditysensor andmanifoldtemperaturesensor)

P0111 Detects an Intake AirTemperature (IAT)sensor value that isstuck in range bycomparing the IATsensor value againstthe IAT2 and IAT3sensor values andfailing the diagnostic ifthe IAT value is moredifferent than the IAT2and IAT3 values than isexpected. If the enginehas been off for a longenough period of time,the air temperaturevalues in the enginecompartment of thevehicle are consideredto have equalized, andthe diagnostic can beenabled.

The diagnostic will fail ifthe IAT2 and IAT3values are similar, andthe IAT value is notsimilar to the IAT2 andIAT3 values. Thediagnostic will also failif none of the threesensor values aresimilar to each other,and the IAT value isfurthest from thesensor value that is inthe middle of the threesensor values.


Type B,2 Trips



AND


AND

ABS(Power Up IAT2 -Power Up IAT) >ABS(Power Up IAT2 -Power Up IAT3)

> deg C25



No Active DTCs:

> seconds28,800








> seconds28,800





Component/System

FaultCode




AND


AND

ABS(Power Up IAT3 -Power Up IAT) >ABS(Power Up IAT3 -Power Up IAT2)

> deg C25




Component/System

FaultCode



Intake AirTemperatureSensorCircuit Low

P0112 Detects a continuousshort to ground in theIntake Air Temperature(IAT) signal circuit bymonitoring the IATsensor outputresistance and failingthe diagnostic when theIAT resistance is toolow. The IAT sensor isa thermistor in whichthe resistance acrossthe sensor can beequated to atemperature. A lowerresistance is equivalentto a highertemperature.

Raw IAT Input < Ohms58.00(~150 deg C)



Type B,2 Trips



Component/System

FaultCode



Intake AirTemperatureSensorCircuit High

P0113 Detects a continuousopen circuit in theIntake Air Temperature(IAT) signal circuit bymonitoring the IATsensor outputresistance and failingthe diagnostic when theIAT resistance is toohigh. The IAT sensor isa thermistor in whichthe resistance acrossthe sensor can beequated to atemperature. A higherresistance is equivalentto a lower temperature.

Raw IAT Input > Ohms142,438(~-60 deg C)



Type B,2 Trips



Component/System

FaultCode



Intake AirTemperatureSensorIntermittentIn-Range

P0114 Detects a noisy orerratic signal in theIntake Air Temperature(IAT) circuit bymonitoring the IATsensor and failing thediagnostic when theIAT signal has a noisieroutput than isexpected.

When the value of theIAT signal in °C isdetermined, a delta iscalculated between thecurrent reading and theprevious reading. Theabsolute value of thesedeltas is summed overa number of IATreadings. The result ofthis summation iscalled a “string length”.

Since the IAT signal isanticipated to berelatively smooth, astring length of aparticular magnitudeindicates a noisy orerratic IAT signal. Thediagnostic will fail if thestring length is toohigh.

String Length


And where:"Diff" = ABS(current IATreading - IAT readingfrom 100 millisecondsprevious)

> deg C80.00

consecutive IAT10readings



Type B,2 Trips



Component/System

FaultCode



EngineCoolantTempSensorCircuit Low

P0117 Circuit ContinuityThis DTC detects ashort to ground in theECT (Engine Coolanttemperature) signalcircuit or the ECTsensor. This isaccomplished bymonitoring theresistance of the circuit.If the resistance goesout of the expectedrange the DTC is set.

ECT Resistance(@ 150ºC)

< Ohms55 failures out of5samples6

1 sec/ sample

Continuous

Type B,2 Trips



Component/System

FaultCode



EngineCoolantTempSensorCircuit High

P0118 Circuit ContinuityThis DTC detects ashort to high or open inthe ECT (EngineCoolant temperature)signal circuit or theECT sensor. This isaccomplished bymonitoring theresistance of the circuit.If the resistance goesout of the expectedrange the DTC is set.

ECT Resistance(@ -60ºC)

> Ohms134,000 Engine run timeORIAT min

> seconds15.0

°C-7.0


1 sec/ sample

Continuous

Type B,2 Trips



Component/System

FaultCode



EngineCoolantTemperature(ECT)SensorCircuitIntermittent

P0119 Circuit ErraticThis DTC detects largestep changes in theECT (Engine Coolanttemperature) signalcircuit or the ECTsensor. Allowable highand low limits arecalculated for the nextsample based on theprevious sample andsensor time constant.If the sensor respondsfaster than should bepossible the DTC isset.

ECT temperature stepchange:

1) postive step change isgreater than calculatedhigh limit

OR

2) negitive step change islower than calculated lowlimit.

The calculated high andlow limits for the nextreading use the followingcalibrations:1) Sensor time constant2) Sensor low limit3) Sensor high limit

*****Generic Example*****

If the last ECT readingwas 90 Deg C, the Timeconstant was calibrated at10 seconds, the low limitwas calibrated to -80 DegC and the high limit wascalibrated to 200 Deg Cthe caluculated limits are101 Deg C and 73 Deg C.

The next reading (afterthe 90 Deg C reading)must be between 73 DegC and 101 Deg C to bevalid.

*****************************

seconds7.4Deg C-60.0Deg C200.0

No Active DTC's ECT_Sensor_Ckt_FP failures out of3samples4

1 sec/ sample

Continuous

Type B,2 Trips



Component/System

FaultCode



ThrottlePositionSensorPerformance(single turbo)

P0121 Detects a performancefailure in the ThrottlePosition sensor (TPS)sensor, such as when aTPS value is stuck inrange.

This diagnostic isperformed using theIntake Flow RationalityDiagnostic (IFRD).IFRD calculatesmodeled values ofsensors from othersensors. The othersensors are theManifold Pressure(MAP) sensor,Turbocharger BoostPressure sensor andMass Air Flow (MAF)sensor.

These modeled valuesare compared againstthe actual sensorvalues to see if theyare similar. If they aresimilar, then the modelpasses. If they are notsimilar, then that modelis considered to befailed. Certaincombinations of modelpasses and modelfailures can beinterpreted to becaused by aperformance issue withthe TPS sensor. In thiscase, the TPS

See tableP0101, P0106, P010B,P0121, P0236, P1101:Turbocharger IntakeFlow RationalityDiagnostic FailureMatrixfor combinations of modelfailures that can set thisDTC.







TIAP Correlation mo

18 obdg03a ecm - common summary tables...comparing a voltage measurement to controller specific...

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