97 s500 went to pull codes, but got no response???

[mespe]

I just got this S500 and it'll start and run for 1-2 seconds, then stalls. I was going to pull the codes on the 38 pin connector, but I get nothing, no blinks on any of the sockets I checked. Another interesting thing is there is no socket 7, there's a 6 but no 7, and the scanner book says there should be a 7,,,