Software Update
Usage:
ENGINES3126B (9ZF1-279, 3GS1-638) MARINE ENGINES
Problem:
The software that is installed on these engines may allow the following problems:
- *There is a potential of low idle stalling.
- *The Low Oil Pressure Warning is set too high.
- *The Air Inlet Warning and Derate Temperature is to low.
- *The ET Load Factor is not reading correctly.
- *The optional Fuel Pressure is read in absolute.
- *The Low Oil Pressure Warning is set too high.
Solution:
The newest software for these engines is available in SISWEB. The 208-9494 Software Group is available for 450 horsepower engines. The 208-9493 Software Group is available for 420 horsepower engines. The software includes the following changes:
- *Update of maps to fix the low idle instability issue.
- *Changed the 400 rpm Oil Pressure Warning to 0 kPa from 25 kPa.
- *Changed the Inlet Air Temperature Warning is changed to 70°C, and the Derate to 80 °C. (The de-rate is an option that can be turned OFF through ET.
- *The Load Factor is corrected for discrepancies between ET and MPD.
- *The former Fuel Pressure parameter has been renamed to Fuel Press (absolute) on ET.
- *The optional Fuel Pressure is now sent to ET and is now actual and is named Fuel Pressure. If a repair is performed, the dealer should use the following numbers when reporting the repair:
- *Use the Flash File Number as the part that caused the failure.
- *Use the SMCS Code 7939 (Personality Module - Engine Shipped With Wrong Software) as the group number.
- *Changed the 400 rpm Oil Pressure Warning to 0 kPa from 25 kPa.
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