Removing and installing anti-theft engine control unit J623 — AUDI

🧭 Before you start

Fits: VW Caddy III (2K, 2004–2015); platform code 2C0

🔧 Engine codes this applies to

📐 17 workshop diagrams for BSX

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

1. Switch off ignition.
2. Remove plenum chamber bulkhead General body repairs50Body - front; Plenum chamber bulkhead.
3. Twist shear-head bolts (arrows) out using grip pliers and remove cover from protective housing.
4. Then remove securing nuts for control unit bracket (arrows).
5. Release connectors on engine control unit and pull off connector.

6. Press catches (1) and (2) outwards. Then pull engine control unit off control unit bracket in direction of arrow.
7. Push engine control unit onto control unit bracket until it engages in catches.
8. Connect connector to engine control unit and lock.
9. Tighten the securing bolts (arrows).
10. Install cover of protective housing.
11. Tighten new shear-head bolts (arrows) evenly until heads shear off.
12. Install plenum chamber bulkhead General body repairs50Body - front; Plenum chamber bulkhead.

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