18-002-14 REV. A

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. Software To Prevent Or Reduce Unnecessary Malfunction Indicator Lamp (MIL) Illumination For The Following Diagnostic Trouble Codes (DTCs). These DTCs Are Currently Tripped As A One Trip Fault And Should Have Been A Two Trip Fault: ? P0201 - P0206 - FUEL INJECTOR X CIRCUIT/OPEN Fault Codes. ? U110E - LOST AMBIENT TEMPERATURE MESSAGE. ? P049D - EGR CONTROL POSITION EXCEEDED LEARNING LIMIT. Improvements To Prevent Or Reduce Unnecessary Malfunction Indicator Lamp (Mil) Illumination For: ? P0087 - FUEL RAIL PRESSURE TOO LOW. ? P0544 - EXHAUST GAS TEMPERATURE SENSOR CIRCUIT - SENSOR 1/1. ? P2281 - AIR LEAK BETWEEN MAF AND THROTTLE BODY. ? P0128 - THERMOSTAT RATIONALITY. In low ambient temperatures. ? U3017 - CONTROL MODULE TIMER/CLOCK PERFORMANCE. ? U1421 - IMPLAUSIBLE IGNITION KEY OFF TIME RECEIVED. ? 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: ? Fuel Filter Minder Calibration Changes ? Cruise control system improvements. ? Improvements in exhaust brake switch operation. ? Charging system improvements for dual alternator applications. ? Various wiTECH data and system test additions and improvements. ? OBD Template changes for P2453. ? Dual Fuel Tank component update. ? Inducement Timer Reset (Feature enable in wiTech). ? PTO Denied Status Message Update. ? PTO Horn Request sen