Navistar MaxxForce 9 - Page 189

DIAGNOSTICMANUAL
EngineControlModule(ECM)
Anelectronicprocessorthatmonitorsandcontrolstheengine.
EngineCoolantLevel(ECL)
sensor
Aswitchsensorthatmonitorscoolantlevel.
EngineCoolantT emperature1
(ECT1)sensor
Athermistorsensorthatdetectsenginecoolanttemperature.
EngineCoolantT emperature2
(ECT2)sensor
Athermistorsensorthatdetectsenginecoolanttemperature.
EngineFuelT emperature(EFT)
sensor
Athermistorsensorthatmeasuresfueltemperature.
Enginelamp
AninstrumentpanellampthatcomesonwhenDTCsareset.DTCscanbereadasashcodes(redand
amberinstrumentpanellamps).
EngineOFFtests
TeststhataredonewiththeignitionswitchONandtheengineOFF .
EngineOilPressure(EOP)
sensor
Avariablecapacitancesensorthatmeasuresoilpressure.
EngineOilT emperature(EOT)
sensor
Athermistorsensorthatmeasuresoiltemperature.
Enginerating
EngineratingincludesRatedhpandRatedrpm.
EngineRUNNINGtests
Testsdonewiththeenginerunning.
EngineThrottleValve(ETV)
andEngineThrottlePosition
Sensor
TheETVvalveisusedtocontrolairowduringaregenerationprocessoftheaftertreatmentsystem.The
ETVvalveisalsousedtoensureasmoothengineshutdownbyrestrictingairowtotheengineatshutdown.
EngineWarningProtection
System(EWPS)
Safeguardstheenginefromundesirableoperatingconditionstopreventenginedamageandtoprolong
enginelife.
ExhaustBackPressure(EBP)
Thepressurepresentintheexhaustsystemduringtheexhaustperiod.
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