Navistar MaxxForce 15 - Page 136

197 pages

To Next Page

To Previous Page

DIAGNOSTICMANUAL

Actions:

1.AfterDOCreachesoperatingtemperatureandstabilizes(seecallout3,graph7),verifyDPFOT

signalvalueisnot122°F(50°C)higherthanDOCOTsignalvalue.Inthisgraph,DPFOTsignal

valueis122°F(50°C)higherthanDOCOTindicatinginvertedexhaustgastemperatures.

2.VerifyDieselOxidationCatalystInletTemperature(DOCIT)signalvalueisbetween550°F(287°C)

to800°F(427°C).

NOTE–ItisnormaltoseeDieselOxidationCatalystInletTemperatureDOCIT,DOCOT ,andDPFOTsignal

valuestouctuateatthebeginningandendoftheOBFCT.

NOTE–SPN4766FMI10(DOCEfciency)maybeactivewhenexhaustgastemperaturesareinverted.

132

https://www.truck-manuals.net/

Other manuals for Navistar MaxxForce 15