Denso EEPROM NOT PRESENT

**narkeleptk** · 7th March, 2020, 03:15 PM

I don't recommend clips but you would connect it to this adapter:

**Inked** · 8th March, 2020, 04:32 AM

Originally Posted by narkeleptk

I don't recommend clips but you would connect it to this adapter:

Thanks , I didn't have a chance to look at all the adaptors...

Well I've managed to read the chip but I've got to say, I expected more to be on it.

It's just s 1KB file with not much info:

Do you think this is a full read?

**narkeleptk** · 8th March, 2020, 05:19 AM

yea that is a normal read for a 93c56. This chip only holds a few settings. Nothing fancy.

**Inked** · 8th March, 2020, 05:35 AM

Originally Posted by narkeleptk

yea that is a normal read for a 93c56. This chip only holds a few settings. Nothing fancy.

So doesn't it hold any of the immo information?

Remember I'm trying to clone this ecu....

**narkeleptk** · 8th March, 2020, 02:12 PM

If its like the Nissan's we have here in the states then yes but it is only sync data from a immo/bcm. Just copy original ecu's 93c56 and write it to replacement. Save both files and compare them if you want to play around other then that not much else to do .

**Inked** · 8th March, 2020, 03:19 PM

Originally Posted by narkeleptk

If its like the Nissan's we have here in the states then yes but it is only sync data from a immo/bcm. Just copy original ecu's 93c56 and write it to replacement. Save both files and compare them if you want to play around other then that not much else to do .

Ok thanks

From what I've read there is a separate immo box on these cars.

But if I just put this new ecu in the car it won't start, if I put the original ecu back in it starts straight up. So there must be some immo information on the new ecu.

So you think there is a small amount of immo information in my 1KB file?

BTW... thanks again for the programmer recommendation, I'm already thinking of other electronics I have that I can bring back to life.....

**narkeleptk** · 8th March, 2020, 05:45 PM

Yes, there is a few bytes of data stored in this eeprom that contains the synchronization data between the immo/bcm and ecm.
Keep in mind you are not cloning the entire ECU, This chips job is only to hold a few things in memory. Immo Sync data being the main one.
The engine programming and controls are stored in other area's but as long as you matched part/software numbers then you do not need to worry about this.