Alternator not working? [Resolved]

[Cjscos]

The N75 is controlled by the ECU.
As I said before I assume you didn’t have an issue prior to repairing the alternator issue. Have you checked for wiring harness damage?
There is a boost pressure sensor that will be providing input to the ECU, no idea where it is on a single turbo engine (CAAC). I suspect it is on the front of the engine near the alternator - possible damage???

The alternator was separate issue by the looks of it.

 

[DXX]

The alternator was separate issue by the looks of it.

Yes entirely, just highlighting that you didn’t have the existing problem before you did the alternator work so it’s probably something that was disturbed / broken while repairing the alternator issue.

 

[Cjscos]

Just a quick update. The problem has been solved. The low voltage was the broken wire to the negative and corroded connections to the alternator.
The other problem was the egr valve. It had a fault in the electrical part on top of the egr where the multiplugs plugs in although it showed no engine light on the dash. Strange that one.

The two together caused it not to run.

Many thanks for all your help. Much appreciated.