ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT FRONT ENGINE MOUNTING INSULATOR
(a) Disconnect the vacuum hose from the front engine mounting insulator assembly.
|   (b) Using a vacuum pump, apply vacuum of 80 kPa (600 mmHg, 23.6 in.Hg) and wait for 1 minute.  |   
  |  
(c) Check that there is no change in the needle movement of the vacuum pump gauge.
OK:
Vacuum pressure holds.
(d) Check that there is no fluid leakage caused by a break in the diaphragm.
(e) Connect the vacuum hose to the front engine mounting insulator assembly.
Components
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Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Power Steering System: Torque Sensor Zero Point Adjustment Incomplete (C1516)
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