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
