well last night for the first time I got my car running but I'm throwing a few codes. to start off I have a 90 CRX Si with a 1st gen B16 and a PW0.

So far I'm CEL's 7 (TPS), 4 (map vaccum), and 21 (VTEC solinoid). Ok now my TPS isn't hooked up yet since I broke the one that came with my motor and haven't installed the new one, I don't have all the vaccum lines hooked up either so that explains map, now that leaves 21 but here's the thing I check all the wiring with a voltmeter from the solinoid itself to the ecu pin and it gets connectivity.

I tested the solenoid with giving it some power and it clicks like it's supposed so I figured it's good. I used Katmans diagram for the VTEC wiring if anybody was wondering and yes I did connect it to A17

is there anything else that I'm missing here? I'm thinking I might have a bad ECU but I'm not sure yet