Intake System: Inspection

WARNING: This page is about a different car, the 2007 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT INTAKE AIR CONTROL VALVE

Fig 1: Applying Battery Voltage Between Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Inspection procedure when applying voltage between terminals
  1. Disconnect the connector from the intake air control valve.
  2. Apply battery voltage between terminals 1 (-) and 2 (+) of the intake air control valve.
    Check that a clicking sound is heard from the intake air control valve.
    
    If the result is not as specified, replace the intake air surge tank.
INSPECT AIR CLEANER ASSEMBLY

Fig 2: Applying Vacuum To Actuator
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Apply 26.6 kPa (200 mmHg, 7.9 in.Hg) of vacuum to the actuator. Check if the valve rotates open.
2. Apply vacuum for 1 minute. The actuator should continue to keep the valve open.
  If the result is not as specified, replace the air cleaner assembly.