MTU 18V2000 troubleshooting 3

[monam]

We have MTU engine 18v2000. its MDEC damaged and replaced by new one.
The new one starts the engine, but the speed does not go more 1400rpm, and HZ is 47 only not 50 HZ. the alarm code appeared on ECU is 180 and 187 which mean problem on connection on CAN 1.
We checked mechanically and found all ok.
We checked all wiring and found all ok.
How to troubleshoot the problem?
Your help is highly appreciated.

 

[monam]

yes, you are right .the AGC flags an underspeed alarm.you explination meets my conclusion , mtu provided new mdec without SAM, this will not all complete sequence of startup and operation. by this conclusion is It possible to mtu to cancel/override this from the memory if I send to them or we should i buy SAM?

 

[FreddyNurk]

Ask MTU.

I can't guess at your configuration over the internet, MTU is the only one who can advise if your particular replacement MDEC needs a SAM to function properly or not.