Navistar MaxxForce DT Diagnostic Manual page 134

DIAGNOSTIC MANUAL
Actions:
1. After Diesel Oxidation Catalyst (DOC) reaches operating temperature and stabilizes (see callout 4,
graph 6), verify Diesel Oxidation Catalyst Outlet Temperature (DOCOT) and Diesel Particulate
Filter Outlet Temperature (DPFOT) signal values are greater than 900°F (482°C).
2. Verify Diesel Oxidation Catalyst Inlet Temperature (DOCIT) signal value is between 550°F (287°C)
to 800°F (427°C).
NOTE – It is normal to see Diesel Oxidation Catalyst Inlet Temperature (DOCIT), DOCOT, and DPFOT
signal values to fluctuate at the beginning and end of the OBFCT.
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