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 SYSTEM

Check that there are no vacuum leaks at the points shown in the illustration.

HINT:

Perform Inspection After Repair after repairing vacuum leaks in the intake system.

Refer to INITIALIZATION [11/2016 - ]

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INSPECT INTAKE AIR CONTROL VALVE (for ACIS)

Connect the Techstream to the DLC3.
Turn the engine switch on (IG).
Turn the Techstream on.

Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for Intake Control.

*a	Actuator Rod

Powertrain > Engine > Active Test

Tester Display
Activate the VSV for Intake Control

When Activate the VSV for Intake Control is set to on, check that the actuator rod operates.
If the actuator rod does not operate, inspect the intake air control valve (for ACIS) and No. 1 vacuum switching valve assembly (for ACIS).
- Inspect intake air control valve (for ACIS)
  Refer to PROCEDURE - Step 1
- Inspect No. 1 vacuum switching valve assembly (for ACIS)
  Refer to PROCEDURE - Step 1
When Activate the VSV for Intake Control is set to off, check that the actuator rod returns to its original position.
If the actuator rod does not return to its original position, inspect the intake air control valve (for ACIS) and No. 1 vacuum switching valve assembly (for ACIS).
- Inspect intake air control valve (for ACIS)
  Refer to PROCEDURE - Step 1
- Inspect No. 1 vacuum switching valve assembly (for ACIS)
  Refer to PROCEDURE - Step 1

PERFORM INITIALIZATION
1. Perform Inspection After Repair after repairing vacuum leaks in the intake system.
  Refer to INITIALIZATION [11/2016 - ]