Audi TT 8N dash MCU??

**AudiS4** · 18th January, 2021, 05:20 PM

Anyone know which tool will do 2005 Audi TT 8N Dash with MCU MC912DG128? Will X-tool do it??

**chris781** · 18th January, 2021, 06:12 PM

no........... upa ok

**AudiS4** · 18th January, 2021, 10:15 PM

Has anyone run into this mcu being locked won’t provide a full read In circuit??

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**chris781** · 18th January, 2021, 10:53 PM

here is the connection

**AudiS4** · 19th January, 2021, 12:44 AM

Yes I know this is the connection. However it is not letting me read full mcu only portion any ideas?? Also can I try and talk to this cluster via kline on bench or needs to be can??

**chris781** · 19th January, 2021, 01:36 AM

I read it normal with upa was not protected

**AudiS4** · 19th January, 2021, 03:22 AM

HC12.jpg
Can anyone tell me the pinout for this setup??? What each pin is?? or how it should be wired??

**chris781** · 19th January, 2021, 03:34 AM

reset is gray?

**chris781** · 19th January, 2021, 03:38 AM

My picture
red 5v
black gnd
Green reset
Blue bkgd

**AudiS4** · 20th January, 2021, 04:13 AM

I tried without sucess I am only getting a partial read from the mcu,like its security blocked. Can this be because it had mileage written to it but the car hasnt been driven?? Perhaps it need to be driven 20 miles before another read can be done?? I have no Idea I never ran into anything like this with this dash.