How to Replace the Preheater System Control Unit Opel Combo C

Remove

1. 1. Open bonnet

Important. On vehicles with ESP - the steering angle sensor loses its basic adjustment each time the battery is disconnected. It must be recalibrated.

2. 2. Disconnect battery
3. 3. Loosen coolant compensation tank • Unclip coolant compensation tank
4. 4. Disconnect fuel filter housing wiring harness plug
5. 5. Remove engine control unit • Disconnect 2 engine control unit wiring harness plugs (1) – Release wiring harness plug • Unscrew 2x nuts (arrows) • Unclip wiring harness

6. 6. Detach fuse box in engine compartment • Remove engine compartment fuse box cover • Unclip pre-heater system control unit wiring harness
7. 7. Remove pre-heating system control unit (1) • Detach engine compartment fuse box from inner wheel well • Unclip pre-heating system control unit – Release wiring harness plug (2) in direction of arrow

Note. Push engine compartment fuse box carefully to one side.

Install

8. 8. Install pre-heating system control unit • Connect wiring harness plug. • Clip in pre-heating system control unit
9. 9. Attach fuse box in engine compartment • Clip in pre-heating system control unit wiring harness • Install engine compartment fuse box cover
10. 10. Fit engine control unit • Attach wiring harness • Tighten 2 nuts 15 Nm • Connect 2x engine control unit wiring harness plugs – Lock wiring harness plug
11. 11. Connect fuel filter housing wiring harness plug
12. 12. Fasten coolant compensation tank • Clip in coolant compensation tank
13. 13. Connect battery
14. 14. Program volatile memory
15. 15. Close bonnet