Abs code 28 test procedures

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Any help would be appreciated. Code just set today light is constantly on.
I have a teves module if that makes any difference maybe it will be easier for testing purposes. I found a post by rangerj, but i'm pretty sure it was for a '90 only?
Brake system is in fine operating condition otherwise, I have bias plugs so i'd like my abs to work. thank you in advance

 

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I checked what I believe to be the abs relay for corrosion and I tried testing it. There is a pin that is marked ground and the other is marked test inside. When I applied battery voltage to the test pin while grounding the other nothing happened. I expected it to click.
If I have the right relay it has two connectors.

edit: Car is a 92' with 110k. Relay on firewall tested good when powered up.

 

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There is an open between pins 4 & 7 on the 19 pin connector. I tried to test resistance. I guess I have to replace the valve block, ohh joy.

edit:
Went to the junk yard and got a valve body and motor from a slo for $20, no more abs light.