OK - Here goes - from the Nissan service manual.
AFM pin - purpose - connects to
Pin A - Variable resistor - eccs pin 30
Pin B - Output Voltage - eccs pin 31
Pin C - Ground - ground
Pin D - Ground - ground
Pin E - Battery source - EFI relay
Pin F - Self clean - eccs pin 12
That's it - FYI - the self clean needs a vehicle speed sensor to work if you use the stock ECCS.
This is page EF & EC - 14 from an 86 300zx manual
There is a very good section on the EFI system in the factory manual.
Are you using a factory 300 ecu on an l28? This is a project I'm doing for a friend right now. I need some help on which systems I can get rid of for the L28 - cheers - Doug
