On-Vehicle Inspection [11/2016 - ]: Procedure

WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT INTAKE AIR CONTROL VALVE (for ACIS)

Remove the V-bank cover sub-assembly.
Refer to PROCEDURE - Step 25

Disconnect the vacuum hose sub-assembly from the intake air control valve (for ACIS).

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Connect a hose and vacuum pump to the intake air control valve (for ACIS).

Using the vacuum pump, apply a vacuum to the intake air control valve (for ACIS). Check that the actuator rod operates when vacuum is applied.

*a	Actuator Rod

If the actuator rod does not operate when vacuum is applied, replace the intake air surge tank assembly.

Using the vacuum pump, apply a vacuum to the intake air control valve (for ACIS). Check that there is no change in vacuum after 1 minute.
If the operation is not as specified, replace the intake air surge tank assembly.
Disconnect the hose and vacuum pump from the intake air control valve (for ACIS).
Connect the vacuum hose sub-assembly to the intake air control valve (for ACIS).
Install the V-bank cover sub-assembly.
Refer to PROCEDURE - Step 91