AIR40 - Check For Vacuum at Pair Valve

^ Key OFF.

^ Remove vacuum line from PAIR valve and connect to vacuum gauge.

^ Key ON, engine RUNNING at normal operating temperatures.

^ Does vacuum gauge indicate 34 kPa (10 in Hg) vacuum or greater?

YES -- Go to AIR41. AIR41 - Check For Pair Solenoid Function

NO -- Verify vacuum line integrity. If OK, go to AIR27. AIR27 - Check Air Solenoid