26SI Series Alternator – Connector Locations

The location of the service tool connector will vary between applications. Cat ET can be connected to the system as follows:

  • By using the 7X-1700 Comm Adapter

  • By using the 171-4400 Comm Adapter II

  • Through the embedded com adapter within the PL1000E Communication ECM (pins 62, 63, and 64). In order to use the embedded communications adapter, a custom built service cable must be connected between the RS-232 port of the PC and the RS-232 “Serial Port 3” of the PL1000E.

Refer to the “Electrical System Schematic” section of this document in order to locate the service tool connector for a specific application.