COVER 4949674 - Caterpillar

Step 1. CHECK THE CIRCUIT CONNECTIONS
Turn the key switch and the disconnect switch to the OFF position.
Disconnect the machine harness connector J2 from the Generator ECM.
Disconnect the machine harness connector J2 from the Motor ECM.
Disconnect the machine harness 70 pin connector from the Power Inverter.
Inspect the harness connectors and clean all of the contacts of the harness connectors. Refer to the illustration above to check the DC Power Bus Voltage Sensor 1 connections on the machine harness connectors for the Generator ECM. Ensure that the wires and sockets are secured in the connector. Ensure that the contacts are clean, dry and in good condition.
Refer to the illustration at the beginning of this procedure. Examine the pins on the Generator ECM J2 connector that are used for the DC Power Bus Voltage Sensor 1 connections. Examine the pins on the Power Inverter 70 pin connector that are used for the DC Power Bus Voltage Sensor 1 connections. Ensure that the pins are secured in the correct location in each connector and ensure that none of the pins are bent or broken. Ensure that the pins are clean, dry and in good condition.Expected Result:The DC Power Bus Voltage Sensor connections on harness connector J2 for the Generator ECM are clean, dry and in good condition. The voltage sensor connections on the 70 pin harness connector for the Power Inverter are clean, dry and in good condition.Results:
OK - The harness connections for the DC Power Bus Voltage Sensor are in good condition. There does not appear to be any problem with the harness connectors. Proceed