I was trying to set/use the ASL circuit on my 6000 and have yet to notice any difference with it enabled vs. disabled. Does it need to have the same external mike plugged into it as is used for the AutoEQ? I have the VSS circuit wired in and is confirmed working in the connections screen under system info.
Is the ASL on the Avic really even worth fooling with? I have read differing opinions. I drove an Impala once that had it on the factory HU and it worked great.