Navistar MaxxForce 10

DIAGNOSTICMANUAL
Turbocharger
Aturbinedrivencompressormountedontheexhaustmanifold.Theturbochargerincreasesthepressure,
temperatureanddensityofintakeairtochargeair.
Turbocharger1TurbineOutlet
Pressure(TC1TOP)sensor
Avariablecapacitancesensorthatmonitorsexhaustback-pressure.
Turbocharger2Compressor
Inlet(TC2CIS)sensor
TheTC2CISsensorincludesathermistorsensorthatmonitorsthetemperatureofchargeairenteringthe
HPturbocharger.ThissensoralsomonitorsboostpressurefortheLPturbocharger.
TurbochargerWastegate
Control(TCWC)solenoid
ControlstheTCWCactuatorbyregulatingtheamountofchargeairpressuresuppliedtotheTCWC
actuator.TheTCWCsolenoidiscontrolledbysignalsfromtheECMinresponsetoenginespeed,required
fuelquantity,boost,exhaustback-pressure,andaltitude.
Turbocharger1Wastegate
Control(TC1WC)solenoid
ControlstheTC1WCactuatorbyregulatingtheamountofchargeairpressuresuppliedtotheTC1WC
actuator.TheTC1WCsolenoidiscontrolledbysignalsfromtheECMinresponsetoenginespeed,required
fuelquantity,boost,exhaustback-pressure,andaltitude.TheTC1WCactuatorispartoftheturbocharger
assembly.
NOTE–TC1WCdoesnotaffectengineperformanceandisremovedfrompostproductionengines.
Turbocharger2Wastegate
Control(TC2WC)solenoid
ControlstheTC2WCactuatorbyregulatingtheamountofchargeairpressuresuppliedtothewastegate
actuator.TheTC2WCsolenoidiscontrolledbysignalsfromtheECMinresponsetoenginespeed,required
fuelquantity,boost,exhaustback-pressure,andaltitude.TheTC2WCactuatorispartoftheturbocharger
assembly.
Variablecapacitancesensor
Avariablecapacitancesensormeasurespressure.Thepressureforcesaceramicmaterialclosertoathin
metaldiscinthesensor,changingthecapacitanceofthesensor.
VehicleSpeedSensor(VSS)
Normallyamagneticpickupsensormountedinthetailshafthousingofthetransmission,usedtoindicate
groundspeed.
Viscosity
Theinternalresistancetotheowofuid.
Volt(v)
AunitofelectromotiveforcethatwillmoveacurrentofoneamperethrougharesistanceofoneOhm.
Voltage
Electricalpotentialexpressedinvolts.
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