Remove and Replace

NOTES:
- By disconnecting the ECM, the permanent voltage supply is disconnected and therefore the learning values, DTC memory and readiness code are erased.
- If uneven idle occurs after the ECM is installed, let the engine idle for a few minutes so that the learning process can be carried out.

If the ECM is replaced, carry out the following work steps in the specified sequence:
- Switch ignition on.
- Connect VAG 1551 scan tool and operate until control module identification is displayed.

ECM identification and the coding are shown on the display:

8D0906266 2.81 V6/2V MPI OBD2 DO1
Coding 09042 WSC 06388

- Print out ECM identification and compare coding to table of coding variations.
- Press arrow button.

Indicated on display:

Rapid data transfer HELP
Select function XX

- Switch ignition off.
- Remove faulty ECM.
- Install new ECM.
- Re-code ECM with appropriate coding.