Procedures

Throttle Valve Control Module, Cleaning

• If a new Engine Control Module (ECM) is installed, then it must be adapted to the throttle valve control module. The adaptation may only be performed on a new or cleaned throttle valve control module because dirt/coking on the end position of the throttle can result in incorrect adaptation values.

• The throttle valve must not be damaged when cleaning.

Special tools, testers and auxiliary items required

• Acetone

Procedure

- Pay attention to the rules of cleanliness. Refer to => [ Clean Working Conditions ] Fuel Supply.

- Remove the throttle valve control module. Refer to => [ Throttle Valve Control Module (J338) ] Removal and Replacement.

- Open throttle valve by hand and hold it in the open position with a suitable object (for example, a plastic or wooden wedge) - arrow -.







Acetone is easily flammable.

• Observe accident prevention measures and safety information when working with easily flammable fluids.

• Do not used compressed air when cleaning the throttle valve.

• Always wear protective eyewear and protective clothing to prevent injuries and fuel from coming in contact with your skin.

- Clean the throttle valve, especially in the area of closed throttle valve - arrows -, with standard acetone and a brush.






- Wipe the throttle valve with a lint free cloth.

- Allow the acetone to dry completely and reinstall the cleaned throttle valve control module. Refer to => [ Throttle Valve Control Module (J338) ] Removal and Replacement.

- Adapt the ECM to the throttle valve control module, refer to "Guided Functions" in the vehicle diagnostic tester.