2010/02/05 Caterpillar

New Software Is Used for C175-16 Generator Set Engines {1901, 1920}

Usage:

C175-16 WYB

Engine: C175-16 (S/N: WYB1-UP)

Description of Change: The new software includes the E1106 High Fuel Rail Pump Flow event code that indicates either an issue with the fuel pump or with the fuel lines for the high pressure fuel system. The new software also improves the accuracy of the reading for the fuel filter differential pressure across the primary fuel filter.

Adaptable To:

Note: The parameter for cooldown speed in the Electronic Control Module's configuration menu must be set to 1800 rpm prior to installation of the new software. If the cooldown speed is not set to 1800 rpm, a 268-2 Programmed Parameter Fault : Erratic, Intermittent, or Incorrect diagnostic code will be generated when the software is flashed.

The new software is effective with the following serial numbers:

WYB00151-00156
WYB00160-00169
WYB00200-UP

The part numbers for the software are listed in Table 1.

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Table 1
Part Numbers for the New Software
Application	New Pt No	Former Pt No
60 Hz Tier 2	350-1607	344-2666
50 Hz Low Emission	354-0500	340-9705
60 Hz Low BSFC ⁽¹⁾	354-0551	333-8427
50 Hz Low BSFC	354-0553	341-2033

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