Checking Circuit Continuity
WARNING: This page is about a different car, the 2013 Ford Focus and 2012 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.
- Recommended practice: Expect less than 2 ohms of resistance for most wires.
- Ohmmeter low-resistance resolution (approximately 0.1 ohm) limits its use to circuits carrying less than approximately 5 amperes. This is due to the fact that very small resistances, below the resolution of a Digital Multimeter, cause significant voltage loss in higher current circuits.
- The Digital Multimeter applies a small amount of voltage to the circuit or component to calculate resistance. As a result, Digital Multimeter ohmmeters are very sensitive to any level of voltage present. Voltage present in the circuit will corrupt the Digital Multimeter reading.