How to Remove and Install the Engine Control Unit Opel Corsa D

Important: When returning a replaced control unit to Opel, do not clear the fault memory.

Note. The security code must be reset using TECH 2 when replacing or interchanging the engine control module (before removal)

Remove

1. 1. Open bonnet
2. 2. Read out control unit data with TECH 2 • Connect TECH 2 with diagnostic plug • Establish communication with TECH2 • End communication with Tech 2 • Disconnect TECH 2 from diagnostic plug • Remove ignition key
3. 3. Disconnect battery • Detach ground connection from ground terminal – Undo nut

Note. The battery must not be disconnected until all consumers (e.g. fan) have ceased operation. Minimum wait time is 30 sec.

4. 4. Detach engine control unit wiring harness • Disconnect 2x wiring harness plugs (3), (4) • Detach earth connection – Unscrew bolt (5) • Unclip wiring harness (2x)
5. 5. Detach engine control wiring harness • Detach wiring harness plug (2) from engine control unit • Remove wiring harness plug (1) from tank vent valve

6. 6. Detach wiring harness (1) from engine control unit • Unscrew 2x bolts (2)

7. 7. Remove engine control unit (2) • Unscrew 2x bolts (1)

Install

8. 8. Install engine control unit • Tighten 2x bolt 8 Nm

Note. To avoid damage to the engine control unit, follow the Installation Instructions precisely.

9. 9. Attach wiring harness to engine control unit • Tighten 2x bolt 8 Nm
10. 10. Attach engine control unit wiring harness • Attach earth connection – Tighten bolt • Attach 2x wiring harness plug to tank vent valve • Connect 2x wiring harness plugs • Clip in 2x wiring harnesses
11. 11. Connect battery • Attach ground connection to ground terminal – Tighten nut
12. 12. Upload control unit data with TECH 2 • Insert ignition key • Connect TECH 2 with diagnostic plug • Establish communication with TECH2 • Disconnect TECH 2 from diagnostic plug
13. 13. Program volatile memories
14. 14. Close bonnet