Navistar MaxxForce 13 - Page 15

DIAGNOSTICMANUAL
Step
ActionDecision
2CCheckforAirManagementSystem(AMS)issue.UsingESTwith
ServiceMaxx™software,usetheplaybackfeatureandgraphthefollowing
signalvaluesfrom0to60MPHT est:
SignalValues:
•EngineSpeed
•EngineLoad
•IntakeManifoldPressure(IMP)
•ExhaustBackPressure(EBP)
•AcceleratorPedalPosition1(APP1)
ComparesnapshottoGraph4andassociatedGraphAnalysispage55.
IsAMSoperatingasperGraph4GraphAnalysis?
Yes:Gotostep3
No:Diagnoseand
repairAMSissue
(SeePerformance
Diagnostics
sectioninEngine
Diagnostic
Manual).After
repairsare
complete,retest
fororiginal
problem.
11
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