Navistar N9 User Manual

1DIAGNOSTICTROUBLESHOOTINGPROCEDURES31
Step3RecordsnapshotofhardtostartrelatedKey-OnEngine-Off(KOEO)data.Decision
PerformRecordSnapshotofKOEOData(page2113).
Arebatteryvoltage,FuelDeliveryPressure(FDP),InjectionControlPressure
(ICP),andenginetemperaturesensorvalueswithinKey-OnEngine-Off
specications?
Yes:GotoStep4.
No,batteryvoltage
outofspecication:
Repairbattery,starting
system,chargingsystem,
orECMPWRcircuit
problem.Afterrepairs
arecomplete,retestfor
originalproblem.
No,FDPoutof
specication:Goto
8.1-LowFuelDelivery
Pressure(page120).
No,ICPoutof
specication:Goto
SPN164FMI0Fault
CodeDiagnostics(page
1287).
No,oneormoreengine
temperaturesensors
Notwithin20°F(7°C)
ofothersaftercold
soak:GotoFault
CodeDiagnostics(page
142)forsensoroutof
specication.
Step4Recordsnapshotofenginecrankingdata.Decision
PerformEngineCrankingTest(page2172).
AreSwitchBattery(SWBAT),EngineSpeed(rpm),ICP ,IPR,FDP ,EGR,Turbocharger1
TurbineOutletPressure(TC1TOP),EBP ,andDPFDPwithinEnginecrankingspecication?
Yes:GotoStep5(page
32).
No:SWBATorEngine
Speed(rpm)outof
specication:Goto2.1
EngineCranksSlowor
DoesNotCrank(page
49).
No:ICPorIPRoutof
specication:GotoCPA

Navistar N9 Specifications

General

Brand	Navistar
Model	N9
Category	Engine
Language	English