Measuring Resistance to Check For Open Circuits

Measuring Resistance to Check For Open Circuits

Component Diagram:

1. Make sure there is no power being supplied to the component or lead to be checked (e.g. by removing the relevant fuse).
2. Set the multimeter to ohm measurement and connect the instrument to each end of the component/lead to be checked.
3. Jiggle the relevant wiring harness while observing the ohmmeter.
The resistance for a wiring harness should normally be less than 1 ohm. Special values apply to components.