this is a direct quote from the manual....
Adjustment
1. turn the aac valve assembly idle adjustment screw with a screw driver until idle speed is 600rpm
2. make sure the eccs control unit idle control adjustment volume is turned all the way to the left.
3. remove the 2 pin harnees connector from the aac valve to stop the idle feedback control. at this time the aac valve is completely closed and the idle speed should be below 600rpm under normal conditions.
4. turn the aac valve assy idle adjustment screw with a screw driver to adjust idle speed to 600 rpm.
5. connect aac valve connector and make sure the idle speed is maintained at specified value.
6. the engine speed increases when the adjustment screw is turned to the left and decreases when turned to the right.
7. if you wish to increase idle speed for any reason , turn the idle adjustment volume in the eccscontrol unit to adjust the speed. idle adjustment speed increases when the knob is turned clockwise by a maximun of 250 rpm.
Caution
the adjustment volume must be set 40-50 degrees away from the self diagnostic position as if it is turned all the way to the right (self diagnostic postion) the idle speed is lowered (lowest rpm +50 rpm).
and there you have it a direct copy from the r32 engine manual, the only bit i've left out is only relevent to people using the nissan consult diagnostic computer and was only a couple of lines...
