Before Replacing Engine Control Module

Before ECM is replaced on any model perform following procedure.

1. Turn ignition off. Connect Scan Tool (VAG 1551/1552) using Adapter cable (VAG 1551/3) to Data Link Connector (DLC).
2. Turn ignition on. Prior to removing original ECM, print out ECM identification. On scan tool, press 0 and 1 buttons to select ADDRESS WORD 01: ENGINE ELECTRONICS. Print out ECM identification by pressing PRINT button. Press right arrow button. On scan tool, press 0 and 6 buttons to select FUNCTION 06: END OUTPUT. Press "Q" button to enter input. Turn ignition off.