2000 Xterra help needed

**Air** · 26th December, 2010, 05:41 AM

Hi! Folks
I have a problem with my 2000 Xterra. I cannot change dash value properly. If I put a new value even 000000 I cannot lower down below 98k. EEPROM is S220. I desolder it to cut proccessor clock. Can somebody help me calculate a new value in right order please. I use a TachoSoft 21.5 and other calculators with the same results. I need just an 79.5k. Thank you for any help.

**tranzavanza** · 26th December, 2010, 06:47 AM

For that vehicle I think that you should be reading a 93c46 or 93c56

please confirm that you don't have this kind of chip on the cluster

I always struggle with nissan vehicles even when using my digimaster2.

Also Your dump looks kindda weird can you read it again 8 and 16 bit, and also list the actual mileage reflected on the odometer?

**maumaumau** · 26th December, 2010, 05:37 PM

wich programmer use ? read S220 as 93c56 x 16....post dump here and also exactly actual mileage wich indicates on display, all digits please...i try to help you...

**milanoffracing** · 27th December, 2010, 09:23 AM

Originally Posted by Air

Hi! Folks
I have a problem with my 2000 Xterra. I cannot change dash value properly. If I put a new value even 000000 I cannot lower down below 98k. EEPROM is S220. I desolder it to cut proccessor clock. Can somebody help me calculate a new value in right order please. I use a TachoSoft 21.5 and other calculators with the same results. I need just an 79.5k. Thank you for any help.

Mate, in your file I see: 114327 miles and here is your file corrected to 43399 miles.

**Air** · 27th December, 2010, 03:29 PM

Originally Posted by milanoffracing

Mate, in your file I see: 114327 miles and here is your file corrected to 43399 miles.

that above dump has the 164210mi. I know exactly a miles is on 6a-6f line. I use several programmers and calculators. just the same thing. I remember, one year ego I had deal with 2001 sentra with same EEPROM S220. I used chinese Tacho handheld device to change value on that sentra. Now I don't have that tool. Maybe somebody has a Tacho to calculate for me 79500mi properly? I have no idea how this is possible to do becase to calculate with a Tacho is needed to get dump value in it first.

**Air** · 27th December, 2010, 03:32 PM

Originally Posted by maumaumau

wich programmer use ? read S220 as 93c56 x 16....post dump here and also exactly actual mileage wich indicates on display, all digits please...i try to help you...

same thing if I use EEPROM like a S220 or 93C56 device. Exactly the same dump.

**Air** · 27th December, 2010, 03:37 PM

Originally Posted by tranzavanza

For that vehicle I think that you should be reading a 93c46 or 93c56

please confirm that you don't have this kind of chip on the cluster

I always struggle with nissan vehicles even when using my digimaster2.

Also Your dump looks kindda weird can you read it again 8 and 16 bit, and also list the actual mileage reflected on the odometer?

I'm sure this dump is organized in 16 bit format. But I tryed in 8 bit format too. just no writing in 8 bit (I mean no successful writing)