Audi A4: Engine Control Module
Overview - Engine Control Module

1 - Bolt
2 - Mount
- For the Engine Control Module -J623-
3 - Engine Control Module -J623-
- Before replacing perform the "01 - mechanical engine, functions"
listed adaptation using the Vehicle Diagnostic Tester.
- Removing and installing. Refer to
→ Chapter "Engine Control Module -J623-, Removing and Installing".
4 - Bolt
5 - Suspension Strut Tower
Engine Control Module -J623-, Removing and Installing
Removing
Note
If the engine control module is replaced, perform the Guided
Functions "01 - Control module, replacing" using the Vehicle
Diagnostic Tester.
- Open the retainers in the direction of
-arrows- and remove the Engine Control Module -J623--2-.
- Disconnect the connectors -1-.

Installing
Install in reverse order of removal and note the following:
- If the Engine Control Module -J623- is replaced, perform the
"01 - mechanical engine, functions" listed adaptation using the
Vehicle Diagnostic Tester.
Special Tools
Special tools and workshop equipment required
- Engine Bung Set -VAS6122-

READ NEXT:
Exhaust Pipes/Mufflers
Overview - Muffler
Overview - Muffler, FWD Vehicle
1 - Retaining Loop
Replace if damaged
Exhaust system, installing without tension. Refer to
→ Chapter "Exh
Vehicles with a High-Voltage System (Hybrid Vehicles)
Working on Vehicles with High-Voltage System (Hybrid Vehicles)
Extremely Dangerous Due to High-Voltage
The high-voltage system is under high-volta
SEE MORE:
Special tools and workshop equipment required
Torque Wrench 1331 5-50Nm -VAG1331-
Torque Wrench 1332 40-200Nm -VAG1332-
Engine and Gearbox Jack -VAS6931-
Gearbox Support -T40173-
Locating Pins -T40327-
Procedure
- Equipped on some models: Remove the left and right diagonal
brace. Refer
Special tools and workshop equipment required
Engine Support Bridge -10-222A-
Engine Sling -2024A-
Engine Support Bridge Adapter -3147-
Ring Wrench 7-Piece Set -3337-
Torque Wrench 1332 Insert - Ring Wrench - 16mm -VAG1332/14-
Shop Crane -VAS6100-
Engine Bung Set -VAS6122-
Coolant Collectio