312C, 315C, 318C, 319C, 320C, 321C, 322C, 325C, 330C and M325C Excavators and 325C MHPU and 330C MHPU Mobile Hydraulic Power Units Engine and Pump Control – V2 – Electrical Components And Connector Locations

The following references should be used to locate the components and connectors for the machine that is being serviced: Electrical System Schematic, Parts Manual and Operation And Maintenance Manual.

The following information is found on the back of the Electrical System Schematic: the “Harness Connector and Component Locations”, the machine profile and area views. The following information explains the use of the information on the back of the System Schematic.

  • “Chart Of Component Locations”

The component location chart uses white circles as location labels in the machine profile and the area views. Alphabetical letters in the column for the connector location and the machine location are used in order to indicate the location in the area views.

  • “Chart Of Harness Connector Location”

The chart for the location of a harness connector uses white circles for the location labels in the general view and the area views. Alphabetical letters in the column for the location of the harness connector and the machine location indicate the area views for the location of the components.