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Engine Control Unit, Remove and Install
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
| 2. |
Read out control unit data with TECH 2
| • |
Connect TECH 2 with diagnostic plug
|
| • |
Establish communication with TECH 2 
|
| • |
End communication with TECH 2
|
| • |
Disconnect TECH 2 from diagnostic plug
|
|
| 3. |
Disconnect battery
Note: The battery must
not be disconnected until all consumers (e.g. fan) have ceased
operation. However, a minimum waiting time of 30 sec. must be
observed
| • |
Detach earth connection from earth terminal
|
|
| 4. |
Detach wiring harness from engine control unit
| • |
Disconnect 2x wiring harness plugs (1)
|
|
| 5. |
Detach earth cable (2) from engine control unit
|
| 6. |
Remove engine control unit
|
|
|
Install
| 7. |
Install engine control unit
|
| 8. |
Attach ground cable to engine control unit
|
| 9. |
Attach wiring harness to engine control unit
| • |
Connect 2x wiring harness plugs
|
|
| 10. |
Connect battery
| • |
Attach ground connection to ground terminal
|
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| 11. |
Upload control unit data with TECH 2
| • |
Connect TECH 2 with diagnostic plug
|
| • |
Establish communication with TECH 2
|
| • |
Disconnect TECH 2 from diagnostic plug
|
|
| 12. |
Program volatile memories
|
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