C4 EGS problem

[Ceenine]

Have installed a replacement BSI and am having trouble getting the EGS to operate (cannot get forward or reverse). My Lexia fault code states "ECU + permanent supply Open circuit". I cannot find an explanation for this. Assistance appreciated.

[GiveMeABreak]

Hi Ceenine. I don't want to state the obvious here - but as you haven't provided sufficient details it might be difficult for the experts here to respond appropriately - i.e. is it a brand new BSI or a second hand one; has it been matched to the engine ECU etc. Here are a few lines regarding second hand BSIs from one of the Peugeot forums - but principally the same may apply:-

• The engine ECU and the BSI have to be matched.
  Each ECU in a correctly functioning system has a 4 digit code programmed into it.
  Once this code is entered into the ECU it will not be possible to be read, deleted or modified.
  The second hand BSI can't be matched to the existing engine ECU even if you know both codes from both ECU's.
  In order to fit a new BSI you need to know the correct security code of the existing engine ECU so you can enter this code in the new BSI.
  If you get this wrong the new BSI will become unusable.
  If you don't know the correct code for the existing engine ECU then you need to replace the engine ECU and the BSI.
  They then will need to be configured and matched. If the code to the vehicle is not known you can make up a code in this case
  but make sure you enter the same code in both ECU. It could be an expensive exercise to get this one wrong.
  Peugeot Dealers can obtain the security codes for a particular vehicle if you are the lawful owner.
  The odometer reading (distance travelled) is memorised in the BSI and the instrument panel. If you connect a second hand BSI with a reading
  higher then the one on the instrument, the distance on the instrument will increase to the higher BSI reading as soon as it is connected to the car.
  So beware, a customer would not be happy if his distance suddenly jumped up several thousand kilometres.
  There is one way you can fit a second hand BSI. Use the engine ECU from the same donor car where the BSI came from.
  It would then still be helpful if you can obtain the donor cars 4 digit security code for future programming, and also remember the issue with the distance. The distance reading won't be a problem if the donor car has lower distance then the recipient, the distance in the BSI will then simply go up to the correct distance.

Forgive me if you know all this already - but if you can supply some more info, perhaps some of the resident experts can assist you further.

[wheeler]

Why was the BSI changed ? Need a bit more info on the fault history.
Does the engine start ?
Can Lexia communicate with the gearbox & injection /ECU's and have you tried re learning the clutch & gear positions with Lexia ?
And as above was the BSI brand new & is it programed correctly ?
Are the BSI, ABS & injection ECU's programed for an EGS gearbox ?