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/coke on the end position of the throttle can result in incorrect adaptation values.

• The throttle valve connections must not be damaged when cleaning.

Special tools, testers and auxiliary items required

• Acetone

Procedure

- Observe the rules for cleanliness. Refer to --> [ Clean Working Conditions ] Clean Working Conditions.

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

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





CAUTION!
Acetone is easily inflammable. Observe accident prevention measures and safety information when working with easily inflammable fluids. Do not used compressed air when cleaning throttle valve. Wear protective goggles and protective clothing to prevent injuries and contact with skin.

- Clean the throttle valve thoroughly, especially around the area - arrows - of the closed throttle, with acetone which conforms to DIN 53247 and a brush.





- Wipe the throttle valve connections 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 ] Removal and Replacement.

- Adapt the ECM to the throttle valve control module.