I'm not sure what you mean by "on/off" of the compressor. But, on a standstill idle w/ ac on, from time to time, you will notice the tachometer go up by 200rpm or less for a second or two then go down. I believe this has something to do with the a/c compressor.

Auto Climate Control first appeared on the Innova during the "first facelift" with the 2009 model (introduced very late 2008). It was made available for G and V variants only.