Navistar MaxxForce 10

DIAGNOSTICMANUAL
Step
ActionDecision
19
PerformStandardT esttoverifyallenginesystemsareoperating
asdesigned.Verifyenginecoolanttemperatureisgreaterthan
158°F(70°C).UsingESTwithServiceMaxxsoftware,gotoT ests>
KOERT ests>StandardT est.
DoesStandardT estrunandpass?
Yes:Gotostep20
No:Diagnoseandrepairactive
faultcode(s)(SeeElectronic
ControlSystemDiagnostics
sectioninEngineDiagnostic
Manual).
Step
ActionDecision
20
PerformthefollowingMAFSensorCalibrationprocedureto
accommodateforsystemrepairs:
1.Verifyenginecoolanttemperatureisgreaterthan
180°F(82°C),andlubeoiltemperatureisgreaterthan
176°F(80°C).
2.UsingESTwithServiceMaxxsoftware,gotoT ests>
anddeselectLoadTestSpecicSession.
3.GotoSessions>Performanceandselecttherecord
snapshoticonfromthetoolbar.
4.Gotoprocedures>KOERProcedures>MAFSensor
Calibration.
5.AfterMAFSensorCalibrationiscomplete,stop
recording.
6.TurntheignitionswitchtotheOFFpositionfora
minimumof30seconds.
7.Repeatsteps3through5tocompletesecondMAF
SensorCalibration.
DoesMAFSensorCalibrationprocedurerunandpass?
Yes:Diagnosticscomplete
No:GotoPerformance
DiagnosticssectioninEngine
DiagnosticManual.
43
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