Checking For Short Circuits To Ground
- Make sure there is no power being supplied to the lead to be checked (e.g. by removing the relevant fuse) and that any loads have been disconnected.
- Set the multimeter to ohm measurement.
- Connect one test lead to a reliable ground and the other to the point to be checked.
- Carefully jiggle the wiring harness and check that the multimeter shows a constant infinite value (OL).