Engine Control Module: Service and Repair

Engine Control Module, Replacing

Special tools and equipment
- VAG1551 scan tool with VAG1551/3B cable
- Check the Quick Reference for additional information about the Immobilizer III Service Procedure

Work sequence
- Print out control module identification and thereby previous control module coding as follows:
- Connect VAG1551 scan tool (VAG1552). Switch ignition on and select engine control module with "Address word" 01. (Connecting scan tool and selecting engine control module). Refer to "VAG1551 Scan Tool Tools and Equipment

Control module identification and coding is indicated on display e.g.:


06A906032DL 1,8L RA/5VT G 0001 ->
Coding 07500 WSC 00000


- Print out control module identification by pressing scan tool print button.
- Press -> key.
- Press keys 0 and 6 for "End data transfer" function and confirm input with Q key.

Indicated on display


Rapid data transfer HELP
Select function XX


- Switch ignition off.
- Remove windshield wiper arms and the cover for plenum chamber:
- Release connector from control module and pull off.







- Press securing bracket (clip) (arrow) to left and lift out control module.
- Install new control module and press securing bracket to right.
- Check previous coding and the coding of new control module. Engine Control Module (ECM), Coding
- Match new control module to throttle valve control module. Engine Control Module Adapting to Throttle Valve Control Module
- On vehicles with cruise control system: Check whether this function has been enabled (activated). If "G" is not evident in control module identification, activate cruise control system. Cruise Control System (CCS), Checking


Vehicles with automatic transmissions:
- Learn kick-down point. Kickdown Point - Learning
- Adapt control module for automatic transmission.

Continued for all vehicles
- Perform idling check. Testing and Inspection
- Check DTC memory of new engine control module and erase DTC memory if necessary.