AIR29 - Check Vacuum Vacuum Supply to Reservoir

^ Key OFF.

^ Remove vacuum line from vacuum reservoir.

^ Key ON, engine RUNNING.

^ Check for vacuum at vacuum line.

NOTE; For dual connection, check the vacuum line port marked MAN or VAC.

^ Is vacuum present?

YES -- Go to AIR30. AIR30 - Check Vacuum From Reservoir

NO -- Service vacuum line for leaks or blockage, cracks. Verify drive concern.