Hi James, Not quite the question I was asking, I have access to plenty of tools like that one at the moment. In fact I use one like that from fluke all the time, I also have some tektronix ones. I am more interested on the manner of the testing. I deal mostly with 4 cylinder vehicles and although I intend to expand this test setup to 6,8 or even 12 cylinders, this is ideal to get the measurements into a four channel scope, which will show the four injector signals and timing in relation to each other. In my opinion in one go I could get quite a lot of info just from this. The breakout box would allow me to observe the injector signals with them still connected to the ecu. Observing the current would also give me info on injector resistance and any other issues. As an example, I am looking at a Vauxhall Vivaro, which had a confirmed faulty injector changed. After they changed it, the problem is still there and instead of a cylinder X miss fire I get a intermitent injector control short circuit fault. I suspect the bad injector may have damaged the ECU output driver stage/current sensing circuit, but before I send the ECU for repair I need to reassure myself that the rest of the circuit (wiring,connectors and injectors) are fine under load, Now getting to the injectors on a van like this is a pain and I only want to remove all the bits to get to them a couple of times. With a breakout box I would get all the info at once. As I haven't found any setup like this I am just wandering if this as worth while thing to persue. Thank you. Luis On 27 Feb 2015 18:10, "James Holland" wrote: > > From: Luis Moreira > > Subject: [EE] Injector Testing > > To: "Microcontroller discussion list - Public." > > Message-ID: > > < > CAH5-xwbTDOPd3eE8WZ1kQd0QFsVSgu19PxfdTNv3D_Lu26drtg@mail.gmail.com> > > Content-Type: text/plain; charset=3DUTF-8 > > > > Hi Guys, > > Lately I am been getting a few jobs that require me to look into the > > correct functioning of the Injectors circuits on a vehicle. > > I can do a few tests like injector resistance, but really the way I > thought > > about doing this, on a 4 cylinder vehicle at least, was to build a > breakout > > box which would allow me to measure voltage and current. For voltage an= d > to > > check timing I would then connect it to a 4 channel scope. For current > > measurement I was thinking about using one of the LEM current sensors b= ut > > probably one of the allegro sensors would be fine, then again could use > > scope to check any inconsistencies. There are some methods that exist > > already like the NOID lights but they test one injector at a time. This > > would be a test that would check the all circuit in one go. I do have > some > > connectors for one type of injectors and would probably have to get a f= ew > > different ones. > > What do you guys think. Is there anything that already exists that I ca= n > > base this on? > > Thank you. > > Luis > > On 26 Feb 2015 21:45, "Josh Koffman" wrote: > > I have a current clamp much like this one: > > > http://www.aliexpress.com/item/Hantek-CC-65-AC-DC-Current-Clamp-Meter-Mul= timeter-with-BNC-Connector/1888977772.html > > Mine is an earlier version, the CC60, which was supplied with a > professional (Vetronix) scan tool package. It is probably 20 years old no= w > but is still the tool that I use for jobs like this. I shudder to think h= ow > much mine cost new, the Vetronix sticker adds $$. > James > > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .