18-002-14

Flash: Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Engine Control Module (ECM/PCM) with new software. Several software improvements are available for vehicles equipped with a Cummins 6.7L turbo Diesel. Prevent Or Reduce Unnecessary Malfunction Indicator Lamp (MIL) Illumination For The Following Diagnostic Trouble Codes (DTC?s). These DTC?s Are Currently Tripped As A One Trip Fault And Should Have Been A Two Trip Fault: ? P049D - EGR CONTROL POSITION EXCEEDED LEARNING LIMIT Improvements To Prevent Or Reduce Unnecessary Malfunction Indicator Lamp (Mil) Illumination For: ? P202E - (DIESEL EXHAUST FLUID) REDUCTANT INJECTOR PERFORMANCE ? P20EE - SCR NOx CATALYST EFFICIENCY BELOW THRESHOLD - BANK 1 ? P2002 - DIESEL PARTICULATE FILTER EFFICIENCY BELOW THRESHOLD ? P0604 - INTERNAL CONTROL MODULE RAM ERROR. This DTC may be caused by enabling the remote throttle feature via the EVIC, and it will be accompanied by a ?service electronic throttle control? message in the EVIC. Other Updates: ? OBD Template changes for P2453 ? Fuel Filter Minder Calibration Changes ? Dual Fuel Tank component update ? Inducement Timer Reset (Feature enable in wiTech) ? PTO Denied Status Message Update ? PTO Horn Request sent to Body Control Unit (BCU) ? Wait To Start (WTS) bulb check timing improvements (1 second) ? Frozen CAC Diagnostic Improvement