CAMSHAFT-REAR 7E5322 - Caterpillar

Basic Troubleshooting Practices
Poor and intermittent connections
Poor connections are the most likely cause of a problem in an electrical circuit. When a problem is identified in a particular circuit, examine the wiring connections. Verify that each connection point is clean and secure. Check for frayed connections that can cause short circuits or poor continuity. Pins and sockets can become loose in the connectors. Make sure that the pins and sockets have a good connection to the wire and remain seated in the connectors. Gently pulling on the wires and wiggling the connectors is a good practice for exposing weak connection points. Weak connections and poor mounting of components can be causes of intermittent connections. Refer to the Electrical Schematic for all of the connection points in a particular circuit. Each harness connection creates an opportunity for a weak connection in a circuit.Checking components
Components with moving parts can wear over time. You can check components by verifying the operational range. Refer to the Systems Operation section for the operational range information of a component. Components can still function properly outside of the operational range. However, the performance should be monitored and the component replaced if machine performance is limited. Prior to replacement, perform any necessary calibration procedures for a component if poor machine performance is experienced. Verify that the machine is experiencing poor performance continually before replacing the component.Check for software updates and parameter selections
New software updates can be issued to correct repeated diagnostic codes. Always ensure that a machine is operating on the current software version before proceeding with repairs. Refer to Troubleshooting, "Electronic Control Module - Flash Program" for the procedure to download current software. Machine performance is also affected by parameter selections. Verify that a machine has the correct parameter settings to match the desired machine performance.Using Service Manuals to find electrical information
The diagnostic codes contain a miniature schematic at the beginning of the procedure. The miniature schematic is a condensed drawing that may not include all of the connectors in a circuit. The purpose of the miniature schematic is to provide a point of reference for the involved component and the wires in the circuit. Do not use the miniature schematic in place of the Electrical Schematic. When looking for information on the operation of a component, refer to the Systems Operation section. Detailed information is provided for electrical measurements and proper operation of components. After a repair, check if a calibration should be performed. Components may be located out of reach and removal of other parts may be necessary to complete repairs. Refer to the Disassembly and Assembly section for removal and installation information to gain access to the component in question. Some components require calibration after being replaced to return the machine to normal operation. Refer to the Testing and Adjusting section for the calibrations of electrical components. Printed information for servicing electronics should be verified in SIS Web. New updates of electrical service information arrive to SIS Web daily.