How do you perform a basic electrical continuity check on the UH-60’s wiring harnesses and circuits?

How do you perform a basic electrical continuity check on the UH-60’s wiring harnesses and circuits?

• A. Use a multimeter to verify resistance, verify fuse and breaker status, check for short circuits and open circuits; inspect connectors.
• B. Visual inspection of wires and connectors.
• C. Disconnect power and rely on component labels.
• D. Only test continuity with power applied and watch for current draw.

Answer: (D)

Continuity checks confirm that an electrical path through the wiring harness and related circuits is complete and has no unintended shorts. The right approach is to work with the system de-energized and verify the path with a multimeter in continuity or resistance mode. Probe from a pin on one side of the circuit to the corresponding pin on the other side (or to a known good ground) and expect a low, near-zero resistance or a positive continuity reading. If the meter shows high or infinite resistance, there’s an open circuit that needs repair. Do this test segment by segment through each connector, and also check for shorts by measuring between conductors and between each conductor and ground; any readings indicating a short point to an undesired connection. In addition to confirming continuity, verify that protective elements are intact by checking fuse and circuit-breaker status as part of the overall assessment. Visual inspection remains important for spotting physical damage, corrosion, or pin misalignment, but it cannot substitute for actual electrical continuity checks. Testing with power applied is unsafe and can damage equipment or injure personnel, so power must be off during the continuity test. Once all readings indicate proper continuity and protections are intact, the system can be re-energized and function rechecked as needed.

Continuity checks confirm that an electrical path through the wiring harness and related circuits is complete and has no unintended shorts. The right approach is to work with the system de-energized and verify the path with a multimeter in continuity or resistance mode. Probe from a pin on one side of the circuit to the corresponding pin on the other side (or to a known good ground) and expect a low, near-zero resistance or a positive continuity reading. If the meter shows high or infinite resistance, there’s an open circuit that needs repair. Do this test segment by segment through each connector, and also check for shorts by measuring between conductors and between each conductor and ground; any readings indicating a short point to an undesired connection.

In addition to confirming continuity, verify that protective elements are intact by checking fuse and circuit-breaker status as part of the overall assessment. Visual inspection remains important for spotting physical damage, corrosion, or pin misalignment, but it cannot substitute for actual electrical continuity checks. Testing with power applied is unsafe and can damage equipment or injure personnel, so power must be off during the continuity test. Once all readings indicate proper continuity and protections are intact, the system can be re-energized and function rechecked as needed.