Removing and installing anti-theft-secured engine control unit J623 (Passat 2006 ►) — VW

🧭 Before you start

Fits: VW Passat B6 (3C, 2005–2010)

🔧 Engine codes this applies to

📐 65 workshop diagrams for CAXA

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

📋 Procedure

1. Switch off ignition.
2. Remove wiper arms Electrical system92Windscreen wiper system; Removing and installing wiper arms.
3. Remove plenum chamber cover: General body repairs, exterior64Removing and installing plenum chamber cover
4. Remove bolts (1).
5. Cover the plenum chamber with a clean cloth so that it is not scratched.

6. Raise engine control unit with retaining frame slightly.
7. Release engine control unit in direction of (arrow) and pull out slightly.
8. Bend the upper ends (1) of locking clip outwards.
9. Remove shear-head bolts (2) using grip pliers and remove locking clip.
10. Slide connector locking devices (1) on engine control unit outwards and pull off both connectors.
11. Remove engine control unit.
12. Slide engine control unit (1) in direction of (arrow) in retaining frame until it engages.
13. Tighten the retaining frame.
14. Fit connectors to engine control unit and slide locking devices (1) inwards.
15. Take a new locking clip and tighten new shear-head bolts evenly until heads shear off.

Other VW procedures

• Removing and installing air filter – VW · 3 torque figures
• Removing and installing pulley – Audi A1 · 1 torque figures
• Renewing crankshaft oil seal - belt pulley end – VW Polo 6R · 2 torque figures
• Removing and installing fuel tank (Tiguan) – VW 1.4 · 1 torque figures
• Removing and installing valve timing housing (timing case)
• Removing engine · 41 torque figures
• Removing and installing camshaft – VW Golf Cabriolet · 47 torque figures
• Adjusting valve timing – VW Passat B5 · 83 torque figures
• Removing and installing camshafts – VW Passat B6 · 39 torque figures
• Removing and installing coolant pump · 53 torque figures