Battery Light7 Alternator in Ford Focus 1.6

Hello friends .
We enters a Focus to the workshop with which the battery light is turned on sometimes .. I observe that someone has already touched it lately. In the diagnosis, load failure is detected and we proceed to replace the alternator., We install a Magneti Marelli and we remain the same or worse. In the diagnosis, alternator failure with the codes: P1632, P1794, P0691, P2504 and P1000 which is Can failure. For Provar we have put another battery.
There are someone in this fault, because after buying that the load parameters are correct we are lost.
thank you.

Hello, how are you ... after changing the alternating, did not reset the ECU to make a new reading of the alternator sensor? or not to be so invasive replaced said sensor? It may be damaged and sending a bad signal to the ECU.

I hope my opinion serves you.

Greetings.

In case I have a problem similar to a Ford Transit Connect 1.8TDCI and after trying several alternators, the problem was in the engine control unit that is what controls the alternator load

Talleresbranal wrote: In case I serve you a problem similar to a Ford Transit Connect 1.8TDCI and after trying several alternators, the problem was in the engine control unit that is what controls the alternator load

And in this case, did you have to replace the control unit? What did you do? thank you.

Indeed. I put another cloned UCE with the damaged data, after checking that the installation was correct. These vehicles carry a temperature sensor in the battery box. I also change it for another car and check the installation just in case and still did not load.
Previously I did the test of mounting his allegedly damaged alternator in another equal vehicle and this worked perfectly.
In the end it was an internal failure of the UCE.