For a switch the reading should be in the zero ohm range. Corrosion or pitted contacts will start to raise the resistance rating on a switch. This size of rating on the switch will start to raise the temperature of the switch because the switch starts to act like a load in the circuit.
voltage is measured by voltagd drops. When a switch is open/ off there is a voltage difference between one side to the other. when the switch is on there is no drop from one side of the switch to the other. That is normal operation. If switch is on, and you get a voltage reading across the switch, the switch is bad.
If an Alternating Current (a/c) motor is bad. The resistance will read very hi as in an open winding. ie: meg ohms Or very low as in a shorted winding. ie: 0.01 ohms It must not read any resistance to the housing or shaft. The resistance between leads should be a reasonable value and can be determined with : electromotive force divided by inductance equals resistance. example: 215 volt alternating current with name plate full load amperes of 10 should read very near 21.5 ohms resistance between leads.
A failed diode electrically resembles a switch. Whether it resembles an open switch or a closed one depends on the specific mode in which it failed. But a bad diode won't behave like a diode any more.
if light is not going off, bad switch or short in wiring to light!!
1. THE SWITCH IS BAD 2.THE SWITCH WAS RECENTLY REPLACED AND WIRED INCORRECTLY (POSSIBLE IF THERE ARE MULTIPLE CABLES IN BOX 3.THE CABLE IS SHORTED (UNLIKELY, BUT I'VE SEEN IT) 4.YOU'RE TURNING OFF THE WRONG SWITCH-HA
If the ohms are infinite or greater than one megohm you can conclude the cable is bad. Usually if the ohms are greater than 3 ohms the cable is bad. If the cable is less than 3 ohms it depends on what the cable is used for and how long it is.
For an 8 ohm speaker, 8 ohms is perfect. "Good" and "bad" are relative to the application.
Find out the ohms range it must be within and do an ohms test.
LOW OHM READING - MEANS BAD INJECTOR COIL ECM FIRES FOUR AT A TIME ON 89'S IN LINE 14 -16 OHMS IS NORMAL LOWER OHMS RAISES AMPS BEYOND ECM CAPACITY AND ALL FOUR CAN MISFIRE
Bad switch, bad wiring, ECM fault. If your jake brakes still work, you can rule out the accelerator position switch. The brake position switch might be reading that the brake is depressed when it isn't.
You will need a small electrical multi-tester to test the switch. Set the tester to "ohms". Disconnect the wiring from the switch. Touch one of the tester leads to one side of the switch and the other lead to the other side. Your reading should be zero. Have a friend depress the brake pedal, and the needle on the meter should swing left to right. If the needle does not swing then the switch is bad. If it swings then the problem is elsewhere in the wiring. The multi-tester can be found at hardware stores, auto parts stores and department stores.
No, if the oil pressure switch is bad it will just give you a false reading of your oil pressure.
High oil pressure is good....
It could cause a high reading on the gauge.
Test it Primary resistance 1.40 to 1.54 ohms secondary resistance 7600-8800 ohms primary circuit resistor 1.30 to 1.40 ohms
the problem may be your fuel injectors.take a test meter and set it on ohms and test each injector . a good reading should be between 11 and 14 ohms.usaully around 12.5 ohms but check your haynes manual for test readings.any injector below 12 ohms is probably bad and needs replaced.there could also be cloged injectors so try running fuel injector cleaner threw it .hope this helps had the same problem on 88 beretta.turned out to be a bad injector with a reading at 2 ohms on the one which indiacates shorted injector.replaced them works fine
yes but will barely hear anything. If you have 816 Ohms of impedance then your speaker is probably bad.