[Baffler]

Originally Posted by mikebo

I see that there's a red/black control wire going from the alternator to the item 4/46A:33 (engine control module). Does anyone know what signals/parameters are monitored by the ECU for this connection. For example temperature?

My assumption is that charging is governed by this red/black wire?

Hi, Mike, I'll need to double check the sequence but my understanding is, when the engine is started from cold, the glow plugs and the coolant heater plugs are continually working away in background...I think in 15 minute cycles. This may help explain no charge when up to temp. I'll get back to you on this.