450E Backhoe Loader Machine Electronic Control System Connector Locations Caterpillar

Illustration 1	g01229370
(1) Machine ECM

The machine ECM is located at the front of the cab. The ECM is located beneath the floor panel below the foot pedals.

Illustration 2	g01229371
(2) Diagnostic service tool connector for the ET

The connector is located on the left side of the cab.

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

The following information is a guide to reading the tables on the back of the Electrical System Schematic.

• The "Component Location" table uses white circles to mark the locations in the profile of the machine and in the area views. Alphabetical letters in the "Machine Location" column indicate a general area of the machine. Refer to the corresponding footnote at the end of the table for a description of the location.

• The "Harness Connector Location" table uses white circles to mark the locations in the general view and in the area views. Alphabetical letters in the "Machine Location" column indicate a general area of the machine. Refer to the corresponding footnote at the end of the table for a description of the location.

Connector Contact Numbers

Illustration 3	g00554751
Electronic Control Module (ECM)

Illustration 4	g01090860
Machine Harness Connectors J1 and J2 that mate to the ECM.