Multimeter Help Please

[alloy36]

Can someone enlighten me as to what the display reading on a multimeter is when testing for continuity on a circuit?

I always thought it was resistance.

I've been checking my abs sensors and i'm getting same value for continuity but different values for resistance?

What sm I doing wrong?

Thanks

[BliarOut]

http://www.topbuzz.co.uk/maintenance/testing_abs/t...

[alloy36]

Seen that mate, doesnt answer my question

[BliarOut]

Is one sensor out of kilter with the rest?

[alloy36]

Yep, i'm pretty confident i now which is the culprit.

Just wanted to know for my knowledge, what the vale displayed is when testing continuity?

[Mr2Mike]

alloy36 said:

Yep, i'm pretty confident i now which is the culprit.

Just wanted to know for my knowledge, what the vale displayed is when testing continuity?

Continuity checking is a go/no go test for a presence of a complete circuit. A continuity tester will typically have a buzzer to indicate a complete circuit so you can perform the test without having to look away from the connections you are probing. This test is usually performed when you are simply checking a wire has no breaks, and has been connected to the correct terminal. A continuity tester will typically have a fairly low resistance threshold, above which the circuit under test is indicated as open.

Resistance check is used to actually measure the resistance of the circuit under test. In the case of an ABS sensor, the resistance is significant (i.e. quite a bit more then a short length of cable) and gives some indication of the health of the sensor. The resistance may be high enough that even a good sensor fails to register a complete circuit on a continuity tester.

[abbotsmike]

On most multimeters, the continuity test is also a diode test. The measurement on the screen is the voltage drop across the diode, usually in millivolts.

[stevieturbo]

alloy36 said:

Can someone enlighten me as to what the display reading on a multimeter is when testing for continuity on a circuit?

I always thought it was resistance.

I've been checking my abs sensors and i'm getting same value for continuity but different values for resistance?

What sm I doing wrong?

Thanks

The only proper way to test an ABS sensor is with an oscilloscope.

A multimeter may give some indication of condition of some ABS sensors though.

Is it a 2 wire or 3 wire sensor ? And are you testing with the sensor plugged in or unplugged ?