Landfill Compactors, Soil Compactors, Wheel Dozers, and Wheel Loaders VIMSTM 3G Caterpillar

Reference: Troubleshooting a system may require the following media:

• Electrical Schematic

• Troubleshooting

• Testing and Adjusting

• Systems Operation

• Parts Manual

• Operation and Maintenance Manual

• The simplified schematic at the end of this manual

General Troubleshooting Guidelines

Component Failure

The failure of an electrical component may be caused by the following:

• Failure of the component

• Failure of another component

• Failure in the electrical system

Consider the entire electrical system before replacing a component.

Connections

Poor connections can cause electrical problems. Inspect all connections for the following before other tests are made or any component is replaced:

• Connections are completely corrosion free

• Connections are clean

• Connections are tight

• Wires are fully seated in the connectors

Reference: For connector servicing and inspection instructions, see Troubleshooting, "Electrical Connector - Inspect"

ECM Removal

Reference: Troubleshooting, "ECM - Replace"

Harness

Follow these guidelines when the troubleshooting procedure says “Repair or replace the harness”:

• Use the machine Electrical Schematic to trace the circuit

• Perform continuity checks at the harness connectors

• Check the ground circuit at the component connectors

Note: There must be less than 5 ohms of resistance between any system ground and the frame ground. Ground resistance greater than 5 ohms can cause incorrect problem diagnoses.

Wire Insulation

If wire insulation is punctured, perform the following to repair the damage:

1. Seal the damaged wires with 8T-0065 RTV Silicone Sealant.

2. Cover the sealant with two layers of 1P-0810 Tape.