793F Series AC Off-Highway Truck/Tractor Power Train Electronic Control System Caterpillar

The following electrical schematics and connection diagrams are for the 793F AC Off Highway Truck Drivetrain System. The schematics show the input connections and output connections for the J1 and J2 connectors of the ECMs:

• Drivetrain ECM

• Motor 1 ECM

• Motor 2 ECM

The schematics for circuits inside of the Inverter Cabinet show all of the components and all of the electrical connections that are in the cabinet.

The connection diagrams for the system circuits connections outside the Inverter Cabinet do not show all of the harness connections.

These diagrams do not show the circuits that are on the machine that are not involved with the operation of the Drivetrain ECM.

For a complete electrical system schematic of a particular machine that does show all of the machine harness circuit connections, refer to the Electrical System Schematic in the Service Manual for your machine.

Illustration 1	g02720314
High Voltage Components connections

Illustration 2	g03421965
Drivetrain ECM J1 connections

Illustration 3	g03421968
Drivetrain ECM J2 connections

Illustration 4	g02720705
Motor 1 ECM and Motor 2 ECM circuit connections

Illustration 5	g02486400
Motor 1 ECM J-2 connections to Interface Module 1 J-1

Illustration 6	g02486436
Motor 2 ECM J-2 connections to Interface Module 2 J-1

Illustration 7	g03423316
Inverter Cabinet Low Voltage connections to TB1 TB2 and TB3

Illustration 8	g02720725
Inverter Cabinet Low Voltage connections to TB4 TB5 and TB6

Illustration 9	g02486478
Data Link Circuit connections