Throttle butterfly valve control unit J338 - remove and install — VW

🧭 Before you start

Fits: platform codes 6A1, 6A5

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• Ensure proper Throttle valve control unit J338 cleanliness.
• Ensure proper gasket seating.
• Ensure proper guide pin seating (arrows).
• The Throttle valve control unit J338(1) must be accurately seated over the intake manifold (2).

🔧 Engine codes this applies to

📋 Procedure

1. Remove the air filter line (1).
2. Remove the air filter fastening bolt.
3. Move the air filter upwards (2) and slide the filter towards the front of the vehicle, in points (3).
4. Press the air filter with nozzle in the direction of the (arrow), removing it from the support (4).
5. Remove the air filter from the engine compartment.

6. Disconnect the connector (2) in the Throttle valve control unit J338(1).
7. Remove the line (3).
8. Remove the bolts (arrows) and remove the Throttle valve control unit J338.
9. Ensure proper Throttle valve control unit J338 cleanliness.
10. Ensure proper gasket seating.
11. Ensure proper guide pin seating (arrows).
12. The Throttle valve control unit J338(1) must be accurately seated over the intake manifold (2).
13. In case of replacement, adapt the Throttle valve control unit J338 to the Engine control unit J623; "“Assisted function”".

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