P28 wiring diagram

simonc

Member
Does anyone have the wiring diagram for the OBD1 P28 ecu? We need to know which pin is for the spool valve (vtec).
 

simonc

Member
Thanks.
We're trying to find the spool solenoid, as have just transplanted a B16 into the car. Should there be a voltage from the A4 pin when the car is revved to 6000rpm? So far our curcuit tester didn't pick up any voltage.
Please help!!
 
Top