ECU Copy faulty?

by **xbot** » Tue Apr 11, 2017 1:54 pm

I bought an EDC16C34 ECU from ebay with matching HW and SW for my Citroen C4 2007 model.

After I copied via BDM (both EEPROM and Flash) and put in the car, it displays "Gearbox Fault".

What could be the problems?

by **xbot** » Tue Apr 11, 2017 8:42 pm

When I put old ECU back, car starts.

With new ECU, after copying, car does nto start, but displays Gearbox problem.

Is it a problem with new ECU? Is there something extra I need to do?

by **Shooting** » Tue Apr 11, 2017 10:48 pm

xbot wrote:When I put old ECU back, car starts.

With new ECU, after copying, car does nto start, but displays Gearbox problem.

Is it a problem with new ECU? Is there something extra I need to do?

Sometimes BDM doesn't read eeprom well, look for eeprom and read separately with an eeprom programmer

wbr :)

by **eivin96** » Thu Apr 13, 2017 9:20 am

use ktag

by **xbot** » Mon Apr 17, 2017 11:21 pm

Shooting wrote:
xbot wrote:When I put old ECU back, car starts.

With new ECU, after copying, car does nto start, but displays Gearbox problem.

Is it a problem with new ECU? Is there something extra I need to do?

Sometimes BDM doesn't read eeprom well, look for eeprom and read separately with an eeprom programmer

wbr :)

Do you have suggestions on how to?

I believe EEPROM was read, its only 8k in size. Where would "Gearbox Faulty" error be stored in - EEPROM or Internal Flash or External Flash?

by **Shooting** » Tue Apr 18, 2017 1:27 am

xbot wrote:
Shooting wrote:
xbot wrote:When I put old ECU back, car starts.

With new ECU, after copying, car does nto start, but displays Gearbox problem.

Is it a problem with new ECU? Is there something extra I need to do?

Sometimes BDM doesn't read eeprom well, look for eeprom and read separately with an eeprom programmer

wbr :)

Do you have suggestions on how to?

I believe EEPROM was read, its only 8k in size. Where would "Gearbox Faulty" error be stored in - EEPROM or Internal Flash or External Flash?

You may need to read original eeprom out of circuit with a reliable programmer

wbr