Navistar MaxxForce 10

DIAGNOSTICMANUAL
Step
ActionDecision
18
PerformStandardT esttoverifyallenginesystemsareoperatingas
designed.Verifyenginecoolanttemperatureisgreaterthan158°F
(70°C).UsingElectronicServiceT ool(EST)withServiceMaxx™
software,gotoTests>KOERT ests>StandardT est.
DoesStandardT estrunandpass?
Yes:Gotostep19
No:Diagnoseandrepair
activefaultcode(s).Goto
ElectronicControlSystem
Diagnosticssectionin
EngineDiagnosticManual.
Step
ActionDecision
19
PerformthefollowingMAFSensorCalibrationprocedureto
accommodateforsystemrepairs:
1.Verifyenginecoolanttemperatureisgreaterthan180°F
(82°C),andlubeoiltemperatureisgreaterthan176°F
(80°C).
2.UsingESTwithServiceMaxxsoftware,gotoT ests>and
deselectLoadT estSpecicSession.
3.GotoSessions>Performanceandselecttherecord
snapshoticonfromthetoolbar.
4.Gotoprocedures>KOERProcedures>MAFSensor
Calibration.
5.AfterMAFSensorCalibrationiscomplete,stoprecording.
6.TurntheignitionswitchtotheOFFpositionforaminimum
of30seconds.
7.Repeatsteps3through5tocompletesecondMAF
SensorCalibration.
DoesMAFSensorCalibrationprocedurerunandpass?
Yes:Diagnosticscomplete
No:GotoPerformance
Diagnosticssectionin
EngineDiagnosticManual.
33
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