Active Control Engine Mount: Inspection

INSPECT FRONT ENGINE MOUNTING INSULATOR ASSEMBLY
1. Disconnect the vacuum hose from the front engine mounting insulator assembly.
  
  Fig 1: Locating Front Engine Mounting Insulator Assembly With Nuts
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Using a vacuum pump, apply vacuum of 80 kPa (600 mmHg, 25 in.Hg) and wait for 1 minute.
3. Check that there is no change in the needle movement of the vacuum pump gauge.
  OK:
  
  Vacuum pressure holds.
4. Check that there is no fluid leakage caused by a break in the diaphragm.
5. Reconnect the vacuum hose.
  
  Fig 2: Checking Vacuum Hose
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002