How to Use a Power-probe.

Adam Mechanic

How to use a Powerprobe in a motor vehicle setting. Please like and follow for more content.

Transcript

00:00hi everyone just a quick video on the power pro what it is and what it does so first of all it

00:05is a diagnostic tool to allow a mechanic to put direct battery voltage onto a component to test

00:13it to make sure that the component works so if a customer comes in complaining that a wiper motor

00:18or electric window motor is not working or the component itself is not working and this is a

00:24great way of diagnosing it and testing it and seeing if the motor itself is to blame so what

00:28have we got we've obviously got the power probe 3 lead here and we've got alongside it a little

00:34earth wire and then we've got 20 meters of wire here so we can go anywhere in the car with this

00:39and then two contacts for your battery so first of all we'll put the positive on the positive

00:43and the negative on the negative that lights up my power probe saying we've got power i push the

00:51button here tells me i've got 12.6 volts from that battery so i'm ready to go so two different types

00:57of systems really in a car that you can test some that are body earthed so a again a wiper motor let

01:05we think a bulb will be earthed locally where that component is and it will return through the chassis

01:12back to the back to the battery so in that case you'd use this as your positive normally and then

01:17you clamp this on the engine bay or locally near the component you're testing to complete the circuit

01:24and then you deliver battery voltage if it's in the door like an electric window motor it won't have

01:30a body earth because the door's not part of the part of the body of the car it will have a return

01:35wire through the wiring loom back into the car and then be earthed inside the car somewhere so that's

01:40where this one would need to go on to another connector or pin so you've got the positive side

01:45and the negative side so a couple of components to test here just to show you how to do it

01:50so this fuel injector for instance has two wires i'm going to put my negative here

01:56and then i've got my positive here so if i put my power probe on there hopefully you'll see

02:04it's showing lighting up just here it's actually negatively charged that's because i've got the

02:10negative wire on from the battery so it's showing me that circuit is negatively charged you can obviously

02:15depending on what sort of circuit it is and what you want you can add positive or you can add negative

02:19on this rocker switch and it will tell you what the circuit is that you're testing automatically

02:24so i'm going to put my probe on there and then all i'm going to do is push the button

02:28and hopefully you can see here the fuel injector energize

02:37hopefully you could hear that clicking that fuel injector is working uh you can hear the clicking

02:40noises of solenoids and opening and closing so another one i'll do which is far more easy to

02:47hear i've got this car horn here again this has got two wires it's got a live uh live and a return

02:53so i'm going to put one on one side just be careful not to cross these two wires uh the earth and the

02:58the probe over there because obviously putting voltage through the machine itself it does have a

03:03um a cut off here so it will uh save itself a circuit breaker so i've got my negative on there

03:14well it's obviously negative with charge because it's got a negative earth already there we go that's

03:19the car horn going off so it's a great way of testing uh components to see if they're the problem

03:28that the customers experience anything from a wiper motor at the back a fuel pump

03:32all the way to things in the engine bay as simple as a car bulb obviously if that component's working

03:37what you then do is start tracking back from there so follow the wiring down the car to the fuse panel

03:43and see where that break in the communication between the fuel pump for instance and the fuse

03:48panel see where that stops working and then it gives you an area to work in as to where that

03:54break and that wire is or where that bad contact is a bad connection and so that's a brief

03:59uh starter on the on the power probe i say anything that runs on 12 volts a great tool to just go

04:06straight to it give it battery voltage and just determine whether that's the the pump or the motor

04:12itself is the problem or whether you've got a wiring fault further downstream um upstream sorry from

04:19from your uh from the component you're testing hope that makes sense and we'll see you on the next one

Category

Transcript

Be the first to comment

Recommended