DIAGNOSTIC MANUAL
MAXXFORCE
®
11,13 AND 15 AFTERTREATMENT SYSTEM DIAGNOSTICS
9.1. START DIAGNOSTICS HERE: ENGINE AND AFTERTREATMENT SYSTEM
OPERATIONAL CHECKS
Overview
A properly operating aftertreatment system requires little manual intervention from the operator. Illuminated
warning lamps indicate a driving or extended idle operation that may not allow a successful regeneration of the
aftertreatment system. These illuminated warning lamps may indicate an engine mechanical or performance
concern.
Tools Required
•
Electronic Service Tool (EST) with ServiceMaxx™ software
•
Interface cable (RP1210B compliant supporting J1939 and J1708)
NOTE – A frequent regen concern may not be repaired by only performing an Onboard Filter Cleanliness
Test (OBFCT). Perform all steps in the following diagnostic procedure in order to identify root cause
failure.
NOTE – Repair all active fault code(s) other than SPN 3719 (DPF Soot Load) before beginning Engine
and Aftertreatment System Operational Checks.
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