Question about Actron CP7672 Digital Multitester

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Lost my instructions wish to check for continuity, please advise which setting to use and hwere the leads should be plugged in on the meter , thanks

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Go to <> and download the instruction manual.

Posted on Jun 03, 2010

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Sounds like the thermostat is either defective or has a bad connection. If you are familiar with using a multimeter (volt-ohm-current meter), it would be the device to use to trouble-shoot this problem. MAKE SURE THE HEATER IS UNPLUGGED!!!

With the meter set on Ohms, and the heater set on auto, set the heater to its lowest temperature setting. You want to see no resistance (close to zeor Ohms) when check across the thermostat (the temperature knob mounts on it). If you see high or infinite resistance, the thermostat's open and therefore defective. If the thermostat checks out OK, continue checking with the meter. You should have about zero Ohms between the hot pin on the power plug (the narrower one in N. America) and the heater motor lead. If it's open (high or infinite resistance), keep the one meter lead on the power plug and trace back, checking each connection until you find the defective one. Don't rule out a broken wire, maybe inside the insulation (but unlikely).

Apr 08, 2015 | Heating & Cooling

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I am not sure how to test if i have power going to my glow plugs i tested the plugs for continuity ad they appeared finr but i am not sure if i am getting power to the plugs any help would be appreciated

disconnect the lead to the glo-plugs and install a multi meter on the end of the wire .red lead to the wire and black lead to earth . set meter to read volts DC and turn on the ignition to start position . If there is power in the wire the meter will read 12 volts. If nothing then check the realay and fuses.

Jan 03, 2014 | Cars & Trucks

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I have a Vision Fitness T9450 HRT everything works including the incline when i turn it on but the treadmill will not run, is this a motor problem? or is it a fuse? how can i check ?

Dear Sir:

Hello I hope that everything is o.k

Now I will help you, only thing is you need to know how to handle the DVOM(digital Voltimeter)

To use these instructions, you need to have a familiarity with electricity and a working knowledge of a voltage multimeter. With all of
these tests, USE EXTREME CAUTION!!! Never let the voltage ground directly to any part of the treadmill or your leads ground while you
are testing voltage.
To begin, set your volt meter to AC volts. We are going to trace the power from the wall outlet through the
treadmill to see where it ends.
With the treadmill unplugged, test the wall outlet. You should have from 115 to 125 VAC. Optimally, you will
have at least 120 VAC.
Follow the power leads from the power cord to the lead ends. With the treadmill unplugged, connect your
meter to the lead ends. Plug the treadmill in and check your reading. It should be the same as your reading
from the wall outlet.
Continue this process with the electrical system, following the leads, as they pass through, breakers, fuses,
and the like.
Where the power flow ends is where your problem is. Sometimes it will be in a bad connection, sometimes
it will be in a shorted breaker or blown fuse, at times it may be as simple as a safety switch not working
properly, or it may be a major problem with a component.
In some cases, components work in tandem (i.e.- a controller may need a signal from the console
computer to release voltage to the motor) so if you have a question concerning where voltage ends, email
us at
1) One of the most common problems with power outages is problems with fuses, breakers, wiring, or switches.
2) If your treadmill is equipped with a safety switch, set your volt meter to continuity. Touch your test leads together to make sure you
are getting a closed circuit. With the treadmill unplugged, back the leads off the safety switch, usually near the upper display computer.
With the safety key out, test the switch. It should be open. Push the safety key in. Your circuit should be closed. If this tests ok, move to
the next step.
3) While testing for voltage, you can unplug your treadmill and test the fuses, breakers, and wiring harnesses. Sometimes a breaker may
have shorted open and not tripped. Test these components individually. You want a closed circuit on all of them

instructions Things You'll Need
  • Digital multimeter or analog multimeter
  1. Using a digital multimeter
    • 1 Connect the test leads to the volt-ohmmeter. Plug the black test leads into the black jack marked "Com" or "Common" on the front of the meter. Plug the red test lead into the red jack marked "Volts/Ohms" on the front of the meter.
    • 2 Set the meter's function switch to "Ohms" and the range switch to the "R x 1" scale. If your digital multimeter is an auto ranging meter, you will not have a range switch. Instead, you'll have just a function switch because the meter will automatically select the right range for the quantity that you are measuring.
    • 3 Turn off the power and remove the fuse to be tested from the circuit. Never test a fuse for continuity while it is still connected to the circuit that it is used to protect. If the circuit still has voltage, the meter will be irreparably damaged. If the fuse is still in the circuit when tested it is possible to get a false indication that the fuse is good if the meter gets a completed circuit through other circuit components. To be safe, always remove the fuse from the circuit before testing it.
    • 4 Touch the black test probe to one end of the fuse and the red test probe to the other end of the fuse. It does not matter which probe you touch to which end because fuses are not polarized. You are checking to see if there is continuity through the fuse element. A reading of approximately 0.5 on a digital meter's LCD indicates a good fuse. Most digital meters read their own internal fuses resistance, hence 0.5 Ohms and not 0.00 Ohms. LCD readout of "O.L." indicates no continuity through the fuse. The fuse is bad and needs to be replaced

Thank you in advance, best regard. Blessing.

If you need additional Help, please contact me.


Sep 28, 2011 | Dmm Vision Fitness T9500 Treadmill

1 Answer

How do I check the rectifier to see if its working properly/

I will assume that you have a multimeter and are familiar with its operation.
You can check the diodes in the rectifier by checking from each of the three stator terminals to the positive then the negative terminals.
I'll call the stator inputs to the rectifier 1,2,and3. I'll call the positive and negative terminals P and N.
Using the diode check on your meter, first check is with the positive meter lead on P and negative lead on 1. The meter will either read open or continuity. At this point it doesn't matter which. Now swap the meter leads, positive lead on 1 and negative lead on P. The reading should be the opposite of your previous reading.
Now repeat with 2 and 3. They should have the same readings as 1.
Now repeat the same tests with the positive meter lead on N. The results should be the inverse of the first set.
In all you will be making 12 checks.
Here is an example:
Meter Leads Result
Pos Neg
P 1 Continuity
P 2 Continuity
P 3 Continuity
1 P No Continuity
2 P No Continuity
3 P No Continuity
N 1 No Continuity
N 2 No Continuity
N 3 No Continuity
1 N Continuity
2 N Continuity
3 N Continuity
Remember your results may be reversed.
If you have not already done so, you should check your stator for sufficient AC output. When revving the engine, the lead to lead output from the stator should be in the neighborhood of 60-90 ACV.
If your stator is good and your rectifier checks out, but you are still not getting charging voltage(13-15 VDC) at the battery, the voltage regulator portion of the regulator/rectifier is bad and the unit will need to be replaced.
Hope this helps.

Jul 29, 2010 | 2000 Yamaha V Star 1100 Classic

1 Answer

Where would i find the crank sensor in a 2.4l twin cam motor

the crank sensor is usually located near the crankshaft of the engine, not on the transmission with wires leading to it.

TESTING Fig. 1: Attach suitable jumper wires between the CKP sensor and CKP sensor harness. A DC volt meter can then be attached to the necessary terminals to test the sensor as the engine is being cranked 91114p21.jpg
Typically, when a crankshaft position sensor DTC is set, checking the integrity of the wiring connecting the sensor (using a digital volt meter) to the PCM harness connector is the best way to determine if the sensor is faulty. If the wires all have continuity, and a DTC is set, it is probable that the sensor is faulty. Although a procedure is given here for testing of the crankshaft sensor itself, it is generic, and may not apply to every vehicle. Typically, the crankshaft position sensor harness connector wire leads are labeled. However, it is advisable to use this procedure in conjunction with the wiring diagrams in Section 6 to identify the terminals on the crankshaft sensor before connecting test leads.
  1. Turn the ignition key OFF.
  2. Unplug the sensor electrical harness and check the terminals for corrosion and damage.
  3. Check the sensor wiring harness wires for continuity and repair as necessary.
  4. Attach the sensor harness making sure it is firmly engaged.
  5. Using a Digital Volt Ohm Meter (DVOM) set on the DC scale, backprobe the sensor signal terminal (terminal A) with the positive lead of the meter and backprobe the sensor ground terminal (terminal B) with the negative lead of the meter.
  6. Have an assistant crank the engine and observe the meter.
  7. You should have approximately a 5 volt reference signal pulse. If not the sensor may be defective.
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Jul 22, 2010 | 1997 Pontiac Grand Am

1 Answer

I have a Casiotone MT70 made in 1984. How do I check the polarity as I need to get an AC Adaptor and don't want to damage the keyboard?

Here is how you might check the polarity of a 7.5 volt DC replacement adapter:

Put the 5 batteries into the unit and verify operation. NOW using a DC voltmeter measure the voltage from battery negative and meter negative connected and meter positive to the pin on the power jack. IF you see 7.5 volts positive, then the pin is the positive lead for the adapter.

If you see zero, then continue testing.

With the 5 batteries inserted, connect the positive meter lead to the positive of the stack of batteries. Now touch the negative meter lead to the pin.
If there is 7.5 volts there, then the pin is the negative lead for the adapter.


USUALLY the jack has a contact that disconnects the batteery when the plug with sleeve is inserted.. We are testing the jack without inserting a plug here so the plug should HAVE THE BATTERY VOLTAGE with correct polarity on the pin.

Oct 07, 2009 | Casio Music

1 Answer

Trying to understand the continuity check for F06 error

When you do a continuity check you do not have it plugged in. It is best to unplug at the motor so there is no feedback.

Jul 07, 2009 | Whirlpool Duet GHW9150P Front Load Washer

1 Answer

Connections to Mastercraft Digital Multimeter

the terminals are normally marked common (com) black lead (ohm) for resistance checks red lead and v.amp. for voltage and current red lead hope this helps

Apr 19, 2009 | Measuring Tools & Sensors

1 Answer

Mitsubishi Projection Television wont turn on

Un plug the set first then remove the back, and depending on the model number you should have two or three fuses on the board on the right side where the power goes check them for continuity with an ohms meter. What is the model number of your set? Also does the led indicator light up?

Apr 27, 2008 | Mitsubishi VS-50605 50" Rear Projection...

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