Diesel Engine - MIL ON/Glow Plug Codes Set In ECM

01 08 33

Nov. 25, 2008

2017520 Supersedes T.B. Group 01 Number 08-28 dated Oct. 22, 2008 to provide GFF allowance and change Touareg labor operation number in warranty table.





Vehicle Information

Condition

MIL ON, Glow Plug Faults Stored in ECM, Bosch Glow Plug System Only

MIL ON with glow plug faults present in ECM.

Technical Background

Conversion to a re-designed glow plug is necessary due to a change in supplier.

Production Solution

No production solution necessary, engine out of production.

Service





One or more of the fault codes may be stored in the ECM Fault Memory shown.

^ Diagnose cause of glow plug faults following normal diagnostic procedure

^ Install replacement glow plugs Part No. N10591607 as a complete set.

^ Update ECM software.

PROCEDURE:

Engine Control Module Update - Programming (Flashing) using Software

Version Management (SVM)

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 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.

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 an 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.








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





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











Warranty





Required Parts and Tools

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.