Fiat Punto 85 IAW 18FD.5Z Pin Out

[janeca]

Hi , need one information, wich pin is power to THE ECU ?

TANKS!

[electrix]

Hi, for that ECU power pin is 35, but... there is also pin 4 which is permanent power only when ignition OFF. When You turn ignition ON (+12V to pin 23 by relay), ECU switches pin 4 to GND, that lets to other section relay control which is connected between +12V and pin 4, and connects +12V to pin 35 for power up the ECU.

[janeca]

many tanks !!!