SOVs
Air [y32]....br & gy/bu
Egr [y27]..bk/r & gy/wt

This is what I would check
1-is AP running??? [ runs for a min after cold start, only between 10-40C]
SOV is wired in parallell w/pump., so if pump comes on , sov should also have power.
Easy check is to look for vac at line coming out of SOV when AP is running..
If vac there , you could have a bad AIR shut-off valve [ which is actuated via line from SOV, or check valve downstream. [ crud sticking prolem]

Remember , for the ECU to bring up an AIR code , it relies on a very low voltage [ .02-.04v] lean reading from the 02 sensor when it does a self test.. sometime there is nothing wrong with AIR system, but rather a not so sensitive 02 sensor...
A little tricky diagnosis here.. )
But don't go there til you have verified pump is running [ if not , there is an electrical prob w/fuse or K17 relay.
Check pump first...............