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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
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| • |
Establish communication with TECH2 
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| • |
End communication with Tech 2
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| • |
Disconnect TECH 2 from diagnostic plug
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| 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
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| 4. |
Remove engine control unit
| • |
Disconnect 2x wiring harness plug, engine control unit (1)
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| 5. |
Detach engine control unit from control unit bracket
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Install
| 6. |
Install engine control unit
| • |
Connect 2x wiring harness plugs
| – |
Ensure the plug contacts are perfect and perfectly seated
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| 7. |
Connect battery
| • |
Attach earth connection to negative terminal
|
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| 8. |
Upload control unit data with TECH 2
Note: When replacing
the engine control unit: Observe ECO Service-Flex
| • |
Connect TECH 2 with diagnostic plug
|
| • |
Establish communication with TECH2
|
| • |
Disconnect TECH 2 from diagnostic plug
|
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| 9. |
Program volatile memories
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