Throttle Valve Control Module, Cleaning

Special tools and workshop equipment required

Acetone, commercially available
Brush

NOTE:

If a new Engine Control Module -J623- is installed, then it must be adapted to the throttle valve control module.

Dirt and coking on the end stop can produce incorrect adaptation values.

The throttle valve connections must not be scratched when cleaning.

-- Remove the Throttle Valve Control Module -J338-. Refer to Throttle Valve Control Module -J338-, REMOVING AND INSTALLING .

-- Open the throttle valve by hand and hold it in this position using a plastic or wood wedge -arrow-.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

CAUTION:

- Wear protective eyewear.

- Wear safety gloves.

-- Clean the throttle valve connection thoroughly with acetone and a brush especially in the area of -arrows- near the closed throttle valve.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Wipe the throttle valve connections with a lint-free cloth.

-- Let the acetone dry completely.

-- Install the Throttle Valve Control Module -J338-. Refer to Throttle Valve Control Module -J338-, REMOVING AND INSTALLING .

-- Erase the adaptation values and then adapt the Engine Control Module -J623- to the Throttle Valve Control Module -J338-. To do this, use a Vehicle Diagnostic Tester.