PM620, PM622, PM820, PM822 and PM825 Cold Planers Electronic System Connector Locations Caterpillar


Connector Locations
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1.1. Diagnostic Connectors
2.1. ECM Locations
3.1. Connector Contact Numbers

Use the Machine Electrical Schematic, Parts Manual, and Operation and Maintenance Manual to locate electrical components and connectors.

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

  • The "Component Location" table uses a numeric value for each component on the machine. Cross reference the machine location number from the table to the corresponding number in the machine views graphic.

  • The "Harness Connector Location" table uses a numeric value for each connector on the machine. Cross reference the connector number from the table to the corresponding number in the machine views graphic.

Diagnostic Connectors



Illustration 1g06032279
Diagnostic Connectors are located inside the Center Console


Illustration 2g06032283
Diagnostic Connectors

ECM Locations



Illustration 3g06032288
ECMs are located behind Left Rear panel


Illustration 4g06032311
ECMs are located behind Left Rear panel
(1) Machine ECM
(2) Transmission ECM
(3) Steering ECM

Connector Contact Numbers



Illustration 5g00554751
Electronic Control Module (ECM)


Illustration 6g01090860
Machine Harness Connectors J1 and J2 that mate to the ECM.

Information System:

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