Improved Machine Software Is Now Available For Certain D6K2 Track-Type Tractors {7610, 7620} Caterpillar

Track-Type Tractor

D6K2 (S/N: MXK1-UP; RPR1-UP)

Description Of Change: New software is now used on the machines listed above. The new software impacts the Electronic Control Module (ECM) A4:M1

Adaptable To: New software 488-5947 Machine Software Gp replaces a former 471-7411 Machine Software Gp.

Improvements in (D6K2)

New 488-5947 Machine Software Gp is required for compatibility with rear attachment implement functions.

• The machine ECM communicates the correct rear attachment configuration map to the implement ECM.

• Incorrect version of machine software may not provide the correct implement functions for the following rear attachment configurations :

• Winch

• Winch + fourth function

• Winch Pump

• Winch Pump + fourth function

• Ripper + Winch Pump

• Incorrect version of machine software may also result in an (Unexpected Winch Motor Pressure Detected) event, EID 597.

Improve the Engine Cooling Fan (Demand Fan) solenoid diagnostic strategy.

• Improve the activation logic of the CID 291 (Engine Cooling Fan Solenoid), diagnostic codes to allow time for the Machine/Implement ECM communications to initialize before a diagnostic fault is performed.

• CID 291 (Engine Cooling Fan Solenoid), diagnostic codes were occurring when the rear attachment was configured as winch or winch pump configurations.

The new 488-5947 Machine Software Gp are adaptable to machines and effective in production with machines that are listed in Table .