If this is the case it is the ground to the coil side of the asd relay. The ECM will supply the ground for the asd to come on(ignition on no crank) but go off in a few seconds. It sounds like the ecm is not supplying the ground for the relay to come on. You need to check this with a meter! Put one lead on the positive battery terminal and the other on the blue/yellow wire lead. As soon as you turn the ignition to on you should see battery voltage.