Battery Terminal Connection to Alternator: Fake?

My 120A alternator doesn't have a DF terminal, or am I just being stupid? Is it possible to get the 'FAKEN' signal somehow? Maybe by using a resistor or tapping into something without connecting directly to the main terminal?
What kind of signal comes from the DF terminal?

Hi.

In my bra, the data connector pin is located inside the double plug with the thinner wires (the other wire leads to the charging indicator).

Why do you even want to work in that field / what's your problem?

Oh yes, I almost forgot: The DF terminal provides information about the current load on the alternator.
When the charge reaches 100%, for example, in winter, the engine computer may turn off the glow plug heating, because being colder for longer is still better than a dead battery .

Exactly because of the preheating function. Mine doesn't do it .
'Because according to the EDC (Electronic Diagnostic Control), the signal from the alternator's voltage regulator is missing. That's why it's not working, and it should be functional in winter. I don't want to have to run the auxiliary heater constantly.'

Okay, I'll trace the cable now. Thanks for the kind reply.

Have a nice day.
See you tomorrow.

DeathAngel.

Hello.

Okay, I've examined my power supply unit (PSU). It only has a 'W' connector and a 'D+' connector.
How can I fix this error? Where am I supposed to get the signal from? I don't want to replace the alternator. It's a nice 120A alternator, after all.

Hi.

AFAIK, the terminal for the tachometer is different on "mechanical" diesel engines, so the part you have is probably not compatible with your TDI.

The load is generated by the runner voltage and can therefore be measured across both brush holders.
One of them is either controlled by the mass or battery positive terminal, while the other is controlled by the regulator. You can tap into the load signal there.

The question is whether it has the correct polarity for the motor computer, i.e., whether the unswitched coil is connected to + or -. . .
With incorrect polarity, the system will likely detect the opposite of the actual load level (high instead of low, and vice versa).
Then, perhaps an intermediate inverter stage could help (e.g., a transistor in an emitter configuration)... but that is purely theoretical!