Resistance measurement
Before checking the resistance, make sure that there is no voltage on the part to which the ohmmeter is connected. Therefore, always disconnect the plugs, turn off the ignition, remove the wiring or device, disconnect the battery. Otherwise, the meter will be damaged.
The ohmmeter is connected to two consumer contacts or both ends of the electrical wire. While the polarity (±) doesn't matter.
Resistance measurement in the machine is carried out in two cases:
- control of resistance or part installed in the circuit;
- "conductivity" conductor, sensor or coil. This checks for an open in the circuit, due to which the block located in it cannot work. For measurement, an ohmmeter is connected to both ends of the conductor. If the resistance is 0 ohm, then "conductivity" There is. This means that the wiring is good. With a break in the conductor, the measuring device shows infinity.
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