At the connectors of the components, always check the ground circuit. Less than 5 ohms of resistance is required between the ground contacts of the connector and the frame ground. Excessive ground resistance that is greater than 5 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.
When you perform wiring harness tests, do not puncture the wire insulation. Use test leads such as the 7x-1710 Multimeter Probe to troubleshoot the harness without damaging the wire insulation.
If damaged wire insulation is found during troubleshooting, repair the damage. Seal the damaged wires with 8T-0065 RTV Silicone Sealant. Cover the sealant with two layers of 1P-0810 Tape.
Failure of an electrical component can cause the failure of other components. Always attempt to correct the cause of an electrical system failure before you replace a component.
Note: Before any tests are made to the remote control system, operate the machine manually. Check the machine systems for correct operation. If any problems occur on manual operation, refer to the relevant machine systems section of the machine Service Manual for troubleshooting information.
Note: Before any tests are made to the remote control system, visually inspect the remote control system for parts that have damage. Check the steering and bucket control valve for oil leaks.