DIAGNOSTICMANUAL
Actions:
1.AfterDieselOxidationCatalyst(DOC)reachesoperatingtemperatureandstabilizes(seecallout4,
graph6),verifyDieselOxidationCatalystOutletT emperature(DOCOT)andDieselParticulate
FilterOutletTemperature(DPFOT)signalvaluesaregreaterthan900°F(482°C).
2.VerifyDieselOxidationCatalystInletTemperature(DOCIT)signalvalueisbetween550°F(287°C)
to800°F(427°C).
NOTE–ItisnormaltoseeDieselOxidationCatalystInletTemperature(DOCIT),DOCOT ,andDPFOT
signalvaluestouctuateatthebeginningandendoftheOBFCT .
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