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Re: Then what? Posted by Ari [Email] ![]() ![]() In Reply to: Then what?, Courtney C., Mon, 11 Jul 2005 10:53:08 Members do not see ads below this line. - Help Keep This Site Online - Signup |
First, put the two probes together and see what the meter reads. It will probably show a 1 or a 2, meaning 1 or 2 ohms. That's because the meter leads have a resistance. With the leads apart, you may see OL, or ----, or something, indicating an open circuit. Then, with the car OFF, put the leads on the resistor. It doesn't matter which way - resistors don't have a polarity.
If you see a 1 or a 2 - indicating just about the same resistance as when you touched the leads together - then the resistor is OK. Unless you have a pretty expensive meter, it won't read down below an ohm. But you really don't need to read 0.22 +/- whatever. The resistor is either OK or it isn't. If it isn't, the meter will show an open circuit, the same indication as if the leads aren't touching. If the resistor is OK, it will read about the same as when you touched the leads together.
If the resistor fails, it isn't going to change from 0.22 to 0.28 ohm. It's going to blow open and look like infinite ohms.
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