C5 2002 HDI Injector ECU

[Alamow]

I have a C5 2002 HDI that will not start.

When running global test with Lexia the Injector ECU shows an immobilizer fault. I am not able to clear the fault as each time Lexia returns a communication error. I am able to clear faults and adjust all other ecu's.

When checking the Injector parameters the table is empty. When I try and configure the table I am able to select the correct setting and then when I try to load on to the ECU I receive a message stating download error.

I have entered the Key code, doors lock and unlock, BSI parameters show connected to Injector ecu and unlocked when the key is turned off. When I turn the ignition key on the Injector ecu is locked.

I've cleaned as many connections as I can find and checked all engine bay fuses.

Any suggestions on what to try next?

Thanks.