Navistar MaxxForce 15 - COMPONENT DESCRIPTIONS (THEORY OF OPERATION); 12.1. MAXXFORCE 11 AND 13

DIAGNOSTICMANUAL
Actions:
1.AfterDOCreachesoperatingtemperatureandstabilizes(seecallout2,graph8),verifyDOCOT
andDPFOTsignalvaluesaregreaterthan900°F(482°C).Inthisgraph,DOCOTandDPFOT
arelessthan900°F(482°C).
2.VerifyDieselOxidationCatalystInletTemperature(DOCIT)signalvalueisbetween550°F(287°C)
to800°F(427°C).
NOTE–ItisnormaltoseeDieselOxidationCatalystInletTemperatureDOCIT,DOCOT ,andDPFOTsignal
valuestouctuateatthebeginningandendoftheOBFCT.
134
https://www.truck-manuals.net/