ACIS Vacuum Tank

Disconnect vacuum hoses from vacuum tank. Vacuum tank is located at left side of engine compartment, under battery tray. Apply air pressure to port "B" on vacuum tank. Ensure air flows from port "A". Perform STEP 1. See Fig 1. Apply air pressure to port "A". Ensure air does not flow from port "B". Perform STEP 2. See Fig 1. Go to next step.
Plug port "B" on vacuum tank. Using vacuum pump, apply 7.9 in. Hg (27 kPA) of vacuum to port "A". Perform STEP 3. See Fig 1. Ensure vacuum reading will hold for at least one minute. Replace vacuum tank if defective and recheck system operation. If vacuum tank is okay, reconnect vacuum hoses. Check ACIS vacuum switching valve. See ACIS VACUUM SWITCHING VALVE .

Fig 1: Testing Vacuum Tank