Product Link - PL102C Caterpillar


General Information

Usage:

631E 1AB

General Troubleshooting Information

As a reference, a typical schematic is included in the schematic section of this manual for the Product Link PL102C. Also, many Caterpillar machines have a published Electrical System Schematic that illustrates the installation of a Product Link. Refer to these schematics if a troubleshooting procedure instructs you to "REPAIR THE HARNESS". The continuity checks and resistance checks should be performed at the connectors in order to locate a failure in the harness. At a component connector, always check the ground circuit. Less than five ohms of resistance is required from the ground contacts to frame ground. A problem can be incorrectly diagnosed, if an excessive resistance that is greater than 5 ohms is present in the ground circuit. During a troubleshooting procedure, you should inspect all component and harness connections before a component is replaced. If these connections are not clean and tight, the connection can cause an electrical problem.

The problem can be permanent or the problem can be intermittent. Ensure that the wires are pushed into the connectors completely. Make sure that the connections are tight before other tests are performed. A failure of an electrical component can cause a failure of another component or a failure can be caused by the failure of other components. You should always attempt to find a failure and you should correct the cause of a failure in the electrical system before you replace a component.

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