Baz
Ex. Club Member
Basically the part of the ecu that controls the idle up solenoid ( which brings the revs up when the engines under load from lights , fan, demister and heater) was damaged so te diagram there is what i did to bypass its function.
By using 4 relays altogether, the coil in one is energised when it receives a postive switched signal from 1 of the other 3 (which are getting signals that used to go through the ecu for headlights,cooling fan and demister to energize there own coils) and grounds the solenoid on the inlet manifold which brings up the revs
I also fitted one of these which stabilizes the revs because everytime I got into it ,it had a different idle speed. A faulty one gives a bad cold start and variable hot idle speed.
http://cgi.ebay.co.uk/Nissan-Figaro...arts_Vehicles_CarParts_SM&hash=item1c0cffd046