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Step
8
Run DSI System De-Aeration Procedure twice, to purge the Down Stream
Injection (DSI) system of air. Using EST, go to Procedures > KOER
Aftertreatment Procedures > DSI System De-Aeration.
Step
9
Using EST, check Diagnostic Trouble Code (DTC) list for any fault code(s)
that may have become active during OBFCT.
Does DTC list contain any active fault code(s)?
Step
10
Verify exhaust gas temperatures are within specification.
1. Using Electronic Service Tool (EST) with ServiceMaxx™
software, go to Tests > KOER Aftertreatment Tests > Onboard
Filter Cleanliness Test (OBFCT).
2. Go to Sessions > Performance and select the record snapshot
icon from the toolbar.
When OBFCT is complete, stop recording. Use the playback feature and
graph the following signal values from OBFCT:
Signal Values:
•
Diesel Oxidation Catalyst Inlet Temperature (DOCIT)
•
Diesel Particulate Filter Inlet Temperature (DPFIT)
•
Diesel Particulate Filter Outlet Temperature (DPFOT)
•
DPF Soot Load
Compare snapshot to Graph 5 and 6 page 57.
Which graph does snapshot most closely match?
Action
Action
Action
https://www.truck-manuals.net/
DIAGNOSTIC MANUAL
Decision
Go to step 9
Decision
Yes: Repair active
fault code(s)
(See Electronic
Control Systems
Diagnostics in
Engine Diagnostic
Manual). After
repairs are
complete, go to
step 10.
No: Go to step 10
Decision
Graph 5: Go to
step 11
Graph 6: Go
to Performance
Diagnostics
section in Engine
Diagnostic
Manual.
15
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