Engine Control Module: Service and Repair

Special tools, workshop equipment, testers, measuring instruments and auxiliary items required







- VAG 1551 Scan tool (or VAG 1552) with VAG 1551/3 adapter cable

NOTE: All functions which could previously be performed with VAG 1551/1552 can also be performed with the VAS 5051.

Removing
- First print out the control module identification and thereby the previous control module coding as follows:
- Connect VAG 1551 Scan tool (or VAG 1552). Then switch ignition on and select Motronic Engine Control Module (ECM) -J220- with the "Address word" 01. ((VAG 1551 and Motronic Engine Control Module (ECM) -J220-, connecting and selecting).

The control module identification and coding are shown on the display, e.g.:


022906032BL MOTRONIC ME7.1.1 G 0006 ->
Coding 00032 WSC 00000


- Print out the control module identification by pressing the Diagnostic Trouble Code (DTC) reader print button.
- Press the -> button.
- Press buttons -0- and -6- for function "End output" and confirm entry with the -Q- button.
- Switch off ignition.
- Remove wiper arms and cowl panel:
- Release connector from control module and pull off.







- Press the retaining tab -arrow- to left and pull the control module out.

Installing
- Place the new control module into the retaining frame.
- Install control module connector and lock.
- Check previous coding and coding of new control module.
- Adapt new control module to electronic Immobilizer:
- Erase learned values and adapt Motronic Engine Control Module (ECM) -J220- again.

Vehicles with cruise control system (CCS)
- Vehicles with a cruise control system, check the system has been activated. If "G" is not evident in the control module identification, activate cruise control system:

Vehicles with an automatic transmission
- On vehicles installed with an automatic transmission the transmission control module must also be adapted:

Continuation for all vehicles
- Check DTC memory, repair malfunctions if necessary and then erase DTC memory
- Perform idle speed check
- Generate readiness code