Computers/Controls - Update ECM For OBD Optimization

01 09 11

June 30, 2009

2020606





Vehicle Information

Condition

Update Programming - Engine Control Module (ECM) for OBD Function Optimization

With the presence of any P-code (with or without MIL-ON) in the ECM fault memory, update Engine Control Module (ECM) Programming for OBD - Function Optimization.





Note

Technical Background

Software improvement to optimize OBD function.

In rare cases, loss of OBD In-use monitor performance rate counters after DTC clearing due to a project specific software error in the data writing routine.

Software improvement.

Update Programming Procedure

Vehicle requirements

Battery MUST have minimum no-load charge of 12.5V (failure to maintain voltage during update process can lead to ECM failure) (use a Volkswagen approved Midtronics/Incharge 940 (INC-940) tester/charger to maintain battery voltage).

VAS 5051: connected to vehicle and to 110V AC Power supply at all times during procedure.

VAS 5052: connected to vehicle with battery voltage requirements met.

Any appliances with high electromagnetic radiation (i.e. mobile phones) switched OFF.

When performing the update programming procedure, ALL DTCs for all systems are erased.

DTCs linked to Guided Fault Finding function tests will be lost. Therefore, always address stored DTCs for Customer concerns unrelated to the update programming procedure first.





Note

Tip:
The SVM Process must be completed in its entirety so the database receives the update confirmation response. A warranty claim may not be reimbursed if there is no confirmation response to support the claim.

For further update instructions and troubleshooting, refer to SVM Technical Bulletin Instance 2014603, in ElsaWeb.





^ Update the Engine Control Module using the SVM action code as listed in the table.

Tip:
The procedure can be found in GFF under Functions/ Component Selection, Software Version Management, Adjust Software.





Note

Current Tuned ECM or TCM requirements: If you encounter a vehicle with a "Tuned" ECM or TCM, your dealership must do the following before performing any procedure that updates ECM or TCM programming:

^ Notify the owner that their ECM or TCM was found to have been tuned

^ Notify the owner any damage caused by the tuning of the ECM or TCM (including any adverse emissions consequences) will not be covered by Volkswagen Group of America warranties.





^ Obtain the owner's written consent (see attached Control Module Tuning form) for any requested repair under warranty or outside warranty that requires flashing, which will automatically overwrite the "Tuned" program.

If the vehicle has a tuned ECM or TCM, ensure the Control Module Tuning Form has been filled out.








Warranty

Tip:
This update programming procedure should be claimed as a "stand alone" warranty repair.

Any diagnosis/repair performed should be claimed following normal warranty guide lines.





Required Parts and Tools

No Special Parts required.

Additional Information
All part and service references provided in this Technical Bulletin are subject to change and/or removal.

Always check with your Parts Dept. and Repair Manuals for the latest information.