What is the typical procedure for performing a continuity and resistance check on a connector?

What is the typical procedure for performing a continuity and resistance check on a connector?

• A. Test with the harness connected to verify real-world operation
• B. Disconnect the harness, test from each side of the connector to verify continuity, and measure resistance; ensure no shorts to adjacent circuits
• C. Only measure resistance on one side of the connector
• D. Substituting a known good connector and assume continuity

Answer: (B)

Verifying a connector’s integrity means confirming a clean, uninterrupted path through the connector and ensuring there are no unintended connections. The proper approach is to disconnect the harness, then test continuity from each terminal on one side to its mate on the other side with an ohmmeter, and measure the resistance to ensure it’s within spec. This also involves checking that there are no shorts to adjacent circuits by testing between each terminal and nearby conductors or ground. This method confirms the full contact path through the connector and catches issues like opens, corrosion, or high resistance. Using the harness connected can give misleading results due to other parallel paths, testing only one side misses part of the path, and substituting a known good connector does not diagnose the actual connector in place or reveal contact faults.

Verifying a connector’s integrity means confirming a clean, uninterrupted path through the connector and ensuring there are no unintended connections. The proper approach is to disconnect the harness, then test continuity from each terminal on one side to its mate on the other side with an ohmmeter, and measure the resistance to ensure it’s within spec. This also involves checking that there are no shorts to adjacent circuits by testing between each terminal and nearby conductors or ground. This method confirms the full contact path through the connector and catches issues like opens, corrosion, or high resistance. Using the harness connected can give misleading results due to other parallel paths, testing only one side misses part of the path, and substituting a known good connector does not diagnose the actual connector in place or reveal contact faults.