How do you replace the IAC valve on Toyota Highlander?

For four-cylinder and 3.0L V6 models, the Idle Control Valve is under the throttle body. Disconnect the negative battery terminal cable, remove the throttle body and Idle Control Valve mounting screws to remove the valve. Discard the old gasket. To install, reverse these steps, using a new gasket and ensuring the screws are tightened.

Genuine Toyota Highlander Idle Control Valve

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2 Idle Control Valves found

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Toyota Highlander Valve Assembly, Idle Speed Control
Part Number: 22270-20050
$262.65 MSRP: $376.62
You Save: $113.97 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Valve Assy, Idle Speed Control(For Throttle Body); Idler Speed Control
- Comment: (FOR THLOTTLE BODY)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2001-2004 Toyota Highlander | 6 Cyl 3.0L | 1MZFE; 1MZFE; MCU20L-BWPNKA, MCU25L-BWPNKA
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Toyota Highlander Valve Assembly, Idle Speed Control
Part Number: 22270-28010
$259.58 MSRP: $372.23
You Save: $112.65 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Valve Assy, Idle Speed Control(For Throttle Body); Idler Speed Control
- Comment: (FOR THLOTTLE BODY)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2001-2004 Toyota Highlander | 4 Cyl 2.4L | 2AZFE; 2AZFE; ACU20L-BRPNKA, ACU20L-BWPNKA, ACU25L-BRPNKA, ACU25L-BWPNKA

Toyota Highlander Idle Control Valve

In Toyota Highlander, the Idle Control Valve is a significant component as it regulates the airflow that goes round the throttle plate so as to control the idling speed of the engine. It is integrated with the engine control unit to prevent stall during changes in loads while at idling. The valve of the system generally incorporates an electric actuator, which uses a linear servo motor to manage the air flow, and keep the idle speed stable. Different techniques of Idle Control Valves have been used in Toyota Highlander models over the years and the major concern has been to create strong and efficient devices. These valves are robust especially on the aspect of wear, but may develop problems such as jamming because of dirt or dust in the idling. Cleaning is part of maintenance and it should be given to ensure that the Idle Control Valve is in good shape and doesn't fail due to worn out components.

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Toyota Highlander Idle Control Valve Parts Questions & Experts Answers

Valve Assembly, Idle Speed Control
22270-20050
Q: How do you replace the IAC valve on Toyota Highlander?
A: For four-cylinder and 3.0L V6 models, the Idle Control Valve is under the throttle body. Disconnect the negative battery terminal cable, remove the throttle body and Idle Control Valve mounting screws to remove the valve. Discard the old gasket. To install, reverse these steps, using a new gasket and ensuring the screws are tightened.

Related Toyota Highlander Parts

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2004 Idle Control Valve 2003 Idle Control Valve 2002 Idle Control Valve 2001 Idle Control Valve