Digiplex Help

Hi Paul,

welcome to Ferrari

Hi Paul,

welcome to Ferrari-Talk.

Bad news I'm afraid on rebuilding or repairing the digiplex's. I have never heard of anyone that could remove the epoxy filler and repair the units. The best tests you have already performed, switching from one side to the other. I would think that Ferrari UK might have new units in their Vintage/Classic Parts Division and if not a used unit is the only other stock option that I'm aware of.

Although I haven't had the need to try this myself "yet", you may go with one of several programable ignition kits availible such as the Electromotive or Tech III types of ignition controllers.

HTH's

Regards, JRV

Paul
Welcome to FT.
Here are

Paul
Welcome to FT.
Here are some other ideas to read and ponder over a Grin and Vommit just to be complete:

http://www.ferrari-talk.com/discus/messages/3049/3066.html?1076660375

cheers
Russ

Thanks for your input JRV,

Thanks for your input JRV,

i always hope that if i break it i can fix it. lol

i still hope it it is not the unit at fault but have yet to have it checked out. Dont know if there is equipment to test unit out of car.



Are there any good web sites for info about changing ignition systems if i have to take this option.

Regards

Paul

Thanks for the link russ but

Thanks for the link russ but the link onwards within the thread does not work:

http://www.ferrari-talk.com/discus/messages/5/1341.html?1068646676

i get page not found. dont know if it is a problem my end or on the site. any idea JRV.

Regards,

Paul

Hi again Paul,

Digiplexs go

Hi again Paul,

Digiplexs going bad was fairly common when the cars were newish and used often in larger numbers than we tend to see today..


One side would start missing or lay down altogether...swap out the units, if the problem moves around with the units..walllaaa..tested.

Buying new parts for Ferraris is a fairly common occurance, and even more so as they mature. Marrelli CD Units never were all that long lasting or durable considering their price tags...just part of the game we call Ferrari ownership.

Both Electromotive & Tech III have web sites that explain how they work, etc.

Regards, JRV

The active link didn't wor

The active link didn't work for me either, however when I C&P it did.

Takes one to the aftermarket parts upgrade section & Russ's ignition system upgrades.

We also recently discussed the need for additional ground wires and tie wrapping the harness plugs to the units.

http://www.ferrari-talk.com/discus/messages/3049/3066.html?1076660375


OK now I see the problem...the original thread by Russ may have been archived and is unasesible via direct link. See what I can do to pull it up .

Being a dealer, it is EASY to

Being a dealer, it is EASY to test a Digiplex, etc., by using a new unit.........they have them is stock.

However, there is a tester made, by Ferrari, to test the Micropex, etc. on a testarossa, or 328, etc. It is part number 95970020, and it will test any 25-pin connector, even while the engine is running. It is a box, with a cord coming out, ending in a 25-pin connector. This connects to the ECU........the engine 25-pin connector attaches to the box. Using the holes in the box, one can check ohm and volt readings of all things that go to the ECU.......that is all sensor input, and all ECU output. Therefore, one can check all sensors to, and outputs from the ECU.

One only needs the correct values for the ohm and volt readings between the proper terminals. This is checked on the box itself (Ohm readings while the engine is off, and volt readings while the engine is running, etc.).

I can now check the sensors, and ECU output on the testarossa.....since I have those values. I recently obtained the values of the FI ECUs also, since they also are 25-pin connetions.

Hence, if one has the appropriate volt and ohm readings, this tool can test any sensor, and ECU output.........as long as it is a 25-pin connector.

The tester was about $225.....

The tester was about $225........from a Ferrari dealer. There are no accessories.......it is just the tester and 25-pin cord.

I think it is a pretty neat tool. As you know, I am doing a service on my TR. I removed all the wiring, but will use the tester to make sure that the plugs are appropriately placed in the sensors of the engine........I know...I didn't label them properly, when I took it off..........so the sensor will come in handy. Later, I will test the sensors, while the engine is running; just as a reference.

It seems that the TR, 328, and 3.2 Mondial, all had 25-pin connectors, according to the tech manual that I have.

How many pins does the 308 have?

I can understand where this tester does take much more time..........time that a dealer doesn't want to spend. However, I think it is a nice tool for the DIYs, as I am.......where time is not money.

Thanks for info on tester but

Thanks for info on tester but the digiplex is a 9 pin connector. I have attached some pics.





regards,

Paul

Hi again all.

Well..... a

Hi again all.

Well..... after some testing, the only thing found that looked suspect was a poor solder joint on the main transistor (top left on previous top view pic). With that soldered and the box back in the car........ success, started first turn of the key.

My next move is to clean all electrical contacts and make some earthing leads ref
http://www.ferrari-talk.com/discus/messages/5/3151.html?1077573531

Many thanks for all the input and suggestions to my problem.

Regards, Paul