18-018-13 REV. A

Flash: Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (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 Transmission Faults. These Faults Are Currently Tripped As A One Trip Fault And Should Have Been A Two Trip Fault: ? P0711 - TRANSMISSION TEMPERATURE SENSOR PERFORMANCE ? P0712 - TRANSMISSION TEMPERATURE SENSOR LOW ? P0713 - TRANSMISSION TEMPERATURE SENSOR HIGH ? P0714 - TRANSMISSION TEMPERATURE SENSOR INTERMITTENT ? P0740 - TCC OUT OF RANGE ? P0869 - LINE PRESSURE HIGH ? P0933 - HYDRAULIC PRESSURE SENSOR RANGE/PERFORMANCE ? P0934 - LINE PRESSURE SENSOR CIRCUIT LOW ? P0935 - LINE PRESSURE SENSOR CIRCUIT HIGH ? P1775 - SOLENOID SWITCH VALVE LATCHED IN TCC POSITION ? P1776 - SOLENOID SWITCH VALVE LATCHED IN LR POSITION ? U0100 - LOST COMMUNICATION WITH ECM/PCM ? U0002 - CAN C BUS OFF PERFORMANCE - BUS OFF Improvements To Prevent Or Reduce Unnecessary Malfunction Indicator Lamp (MIL) Illumination For: ? P026A - CHARGE AIR COOLER EFFICIENCY BELOW THRESHOLD ? P0544 - EXHAUST GAS TEMPERATURE SENSOR CIRCUIT - BANK 1 SENSOR 1 ? P0562 - BATTERY VOLTAGE LOW ? P20EE - SCR NOx CATALYST EFFICIENCY BELOW THRESHOLD - BANK 1 ? P2201 - AFTERTREATMENT NOx SENSOR CIRCUIT PERFORMANCE - BANK 1 SENSOR 1 ? P2281 - AIR LEAK BETWEEN MAF AND THROTTLE BODY ? P24A5 - EGR COOLER BYPASS BANK 1 CONTROL STUCK ? P2459 - DIESEL PARTICULATE FILTER REGENERATION TOO FREQUENT ? P249E - CLOSED LOOP SCR REDUCTANT INJECTION CONTROL AT LIMIT - FLOW TOO HIGH Other Updates: ? With the ignition in the ?Run? position, engine not running, a small number of customers may experience a message in the Vehicle Information Center that states ?Service Exhaust System - see dealer? erroneously. ? Add engine run time t