Checksum eprom 24c02 vag EDC15V

by **vaggalic** » Mon Dec 11, 2023 8:56 am

Hi, could someone correct me the checksum of this eprom 24c02 with immo off, of a EDC15V VAG?

by **skywoker** » Mon Dec 11, 2023 10:18 am

You read only 1/2 from eeprom. Full read is need it

by **Shooting** » Mon Dec 11, 2023 12:53 pm

vaggalic wrote:Hi, could someone correct me the checksum of this eprom 24c02 with immo off, of a EDC15V VAG?

Eeproms don't need checksuming, but as above said it might be a 24C04 eeprom.
Important to check size before writing, it will be too late once you write it wrongly.

wbr

by **vaggalic** » Tue Dec 12, 2023 11:37 am

Hi guys, is a 24c02, the ecu is an edc15v but with 2 plcc32 like the MSA15. The car starts perfectly, but the dtc comes out of the immo, maybe also because the key cylinder was changed, I don't know. Normally in these 24c02 I never did checksum, but I was told that the dtc could appear because of that.
Greetings and thanks.

by **Shooting** » Wed Dec 13, 2023 2:09 pm

vaggalic wrote:Hi guys, is a 24c02, the ecu is an edc15v but with 2 plcc32 like the MSA15. The car starts perfectly, but the dtc comes out of the immo, maybe also because the key cylinder was changed, I don't know. Normally in these 24c02 I never did checksum, but I was told that the dtc could appear because of that.
Greetings and thanks.

If the Key cylinder was changed then it needs coding back in.
Other option is to map out the "P" codes from the flash.
What error numbers are you getting?

wbr

by **vaggalic** » Thu Dec 14, 2023 1:29 am

Yes, I will remove the dtc, I don't remember right now which one it was, I don't have the car right now, next week I will have it and I will remove it. Thank you very much. Regards