TCI test

as requested by one of our friends down under, resistance readings on a tci unit
the *** reading kept climbing, maybe a cap was charging ?
keep track of the black and red, it makes a difference

 

Nice, always good to have a place to start if a prob
comes up.
Thanks Polock

 

Well played Polock. What is the correct orientation for the red-black leads?
or have you got to test it both ways?
Did both of your known good TCIs read the same?

 

test both ways to be sure
that was just the spare, then it swapped it to the maxim and it seemed to run the same i'll try the maxim original next but hockey started so it might be awhile

 

second TCI test [TID14-06], [5G2-10], [204]

 

OK, now I'm curious. Will test a spare from a 550 and see what I get.

 

I hope all this testing works. The tci rebuilder i was working with a few years ago said there was no real way to test them. I used to replace 1200-2000 Hp electric motors Our E tecs would ohm them out and say they were good. Spend the day installing them and they wouldn't work on occasion. There was only to places in the state of Ga that could bench test them so we had no option. If this works you could corner the market

 

i can't say this is a for sure test but that's what two good ones look like
would be nice how a bad one ohm's out

 

like i said it would be great if it does. Someone should have a bad one maybe they can send it to you that way you can use the same meter so there wouldn't be any discretion

 

Some thoughts:

- On CDI units the readings I get depend on the meter being used. This may also be true with a TCI, so different readings may not indicate a problem.

- The readings may only be indicative of input and output components. There may be other failed components that a meter may not see.

 

Lets face it, the only real test is to try it on a known running bike of the same pedigree.

 

your 100 percent correct wizard but not everyone has a spare tci. If your tests show conclusive ad least they have a starting point for more piece of mind. Most people automatically think its the tci when there is no spark. All the other things that you can check first before jumping to conclusions. I have seen it so many times in fact i have replaced them for people that bring used ones to be installed. Once you install them and it does not run they automatically think this one is bad also. And when you find the problem easy as a plug cap or ground they change their story but end up with a good spare

Like micarl say there are variables like when you put power thru a resister gets hot and quits. The tci re builder i was working with said most failures are from vibration and the solder breaking he was a smart guy.

 

cutlass, it was me that asked Polock if there was a way of testing the TCI, there are a lot of different units on these bikes, so you would need a test chart for each one, I started to build a chart for the 900, but it was just taking so long, that is why I say swapping one out is the only option for most of us.

 

I was afraid of that. I guess when the re builder told me there was no real way he wasn't kidding. I can see where all the different ones would have Different readings. Just wish there was a way that would make it easier on peoples wallets

 

i think we're looking at this wrong, it's not the exact numbers we should be looking at , it's the relation in the numbers. some numbers seem to repeat in columns and some in rows ex: row1 colum1 466 one way 320 the other what ever reading you get on those terminals they should all be close to one another
look at red3 red7and red9 all OL on mine and something with reversed leads, that's a clue
anywhere on there if there are some opens, that's a clue also
as far as each model being different, i doubt it, the same guy probably designed them all and tweaked each one a little
i think somebody already figured out that a 650 box works on a 750
for the record i used a fluke 87V and no more tests till spring, it's too damm cold

 

I test and repair engine management ECUs as part of my job, and testing the unit for resistance between the terminals MAY pick up a faulty unit, but in no way confirms that the unit is functional.

Give me a couple of days and i'll write up my version of a test procedure to throw into the pot.

 

great looking forward to seeing it

 

Hi. I have a XJ650 that I have been restoring and I was always thinking
what if this TCI unit craps itself miles from my home like maybe 200
miles away. I looked on the net and bought 2 more second hand TCI
units and I pack one in the tool box now incase the one on the bike
malfunctions. I have tried them on my bike and they work ok. One
thing that I tried was putting my brothers XJ750 TCI unit on my XJ650.
The bike started ok and ran but the advance was out only just by a
little bit but the XJ650 did not run as well as when it had its own TCI
unit installed.