- Generator Set:
- C175-16 (S/N: WYB1-UP)
- Engine:
- C175-16 (S/N: P6L1-UP)
An improved 341-2377 Control Module Gp has been released. The module provides the user with the ability to view and log the position of the 3-way valve in the electronic thermostat. The feature eliminates the need to remove the thermostat motor cover to determine the valve position.
The Temperature Control Module (TCM) parameters are now viewable in Cat ET which, includes "Desired Engine Coolant Thermostat Opening" and "Engine Coolant Thermostat Opening". The parameters can be found within the "Electronic Fluid Temperature Control " group. Refer to Illustration 1
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| Illustration 1 | g03046557 |
The engine must meet the criteria below in order for this functionality to be available:
- Part number 341-2377 Control Module Gp .
- Engineering change level of -01 or higher
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| Illustration 2 | g03045523 |
Note: A sticker on the module with the part number and engineering change level information on the module. Refer to Illustration 2
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| Illustration 3 | g03045782 |
Use Caterpillar Electronic Technician 2011A or newer version. Plug the ET Communications Adapter into the ET communications port at the front of the engine located at the ECM box. Refer to Illustration 3
Note: For engines that do not have the 341-2377 Control Module Gp with change level 1. The cover will need to be removed from the thermostat housing to see the valve position.
The time frame of the change was between March 2010 and April 2010.