PIN 9W2678 - Caterpillar

If errors occur while the system is in operation, fault messages will appear on the display. More information on errors and faults can be obtained with the display and with the Caterpillar Electronic Technician ( Cat ET). Troubleshooting the system may require additional information from the "Electrical System Schematic, Hydraulic System Schematic, and the Operation and Maintenance Manual".Perform continuity checks at the harness connectors in order to locate harness failures. At the connectors of the components, always check the ground circuit. There must be less than five ohms of resistance between any system ground and the frame ground. Excessive ground resistance that is greater than five ohms can cause incorrect diagnosing of problems.During troubleshooting, inspect all connections before any component is replaced. If these connections are not clean and tight, permanent electrical problems or intermittent electrical problems can result. Check that the wires are pushed into the connectors completely. Make sure that the connections are tight before other tests are made.Failure of an electrical component can cause the failure of other components. Also, failure of an electrical component can be caused by the failure of other components. Always attempt to correct the cause of an electrical system failure before you replace a component.Technical Assistance
If you have a problem and you are unable to find the information you need in the this manual contact your dealearship's technical communicator for possible consultation with Caterpillar.
Do not operate or work on this machine unless you have read and understand the instructions and warnings in the Operation and Maintenance Manuals. Failure to follow the instructions or heed the warnings could result in injury or death. Contact your Caterpillar dealer for replacement manuals. Proper care is your responsibility.