DDEC III and IV repair tips.

[anthonycorsi]

hi someone could share blueprint or some kind of identification of internal parts in ddec 3/4 ecu and where i can find replacement parts thanks

[carlosramospoma]

Sure, this is the replacement
Made under license for Sony by Varta ( Germany ) 3 volt lithium battery 5 year life Part number 0708 , 8 year life Part number 0905 - ask for plastic holder.

You need to solder it in so it's a bit fiddly.

good afternoon friend you can help me with an address or link to the ecm lithium battery decc4 Made under license for Sony by Varta (Germany) 3-volt lithium battery 5 year lif

[ortiz]

when a have the code low voltage detected in the sensor output i change this 4.5 to 0.00v and i solved the problem in the ecm.i found this parameter in ****og input

[ortiz]

the ecm ddec3 have 3 memory

[ortiz]

to solve the fault code 53 reprogram with ddrs if not turn off the fault code change the memory

[Onefive]

You are right.... but in my country there are 4 DD for each Cummins.... thats why I see many DD damaged.

Just for introduce a topic... what is the function of each 32 pins chip that store the program?. There are 2 that say "FLASH", 1 with a sticker and another that I dont remember what says.

I suspect that the 2 that say "FLASH" are the volatile memory. It is?

I hope somebody can know the answer.

Yes it is prom memory, and don't peel off that sticker. If it's what I think you'll likely at the least corrupt the eprom or erase it all together. I can't tell you what the chips do. Seems to be a well guarded secret what makes these 20 year old dinosaurs tick. It is rather amazing just how well they work considering what was available 20+ years ago.

[evervas]

Does anybody have any .prg files for any of the 60 series? THANKS!

i have all

[kotok008]

Hello . I have a problem with ddec 4 308 ECU . Burned 2 low Ohm resistance on the 12V supply is shorted on the controller TLE4270G , between 5 foot regulator and ground resistance of 180 ohms .That is, closes the 5 volt power supply . Please tell me what it could be shorting .

[kotok008]

IMG_20160622_151524.jpgYes, and even burned capacitor near TLE4270G

[blackbird00]

Can anyone share with me schematics for DDEC 3/4 ecm if available? Or where I can look to possibly find them?

Thanks.

[giapy0000]

share me dump DDecIV memory AT28C256 vs AM29F400 please

[mmfix]

Is there Somebody can share picture or components around DDEC V Battery because all elements are gone and im trying to rebuild one ddec V.
I appreciate !