Engine Controls - Engine Rough Idle Condition
01 07 32Mar. 29, 2007
2010349 Supersedes Technical Bulletin Group 01 number 05-09 dated June 9, 2005 due to inclusion into ElsaWeb.
Vehicle Information
Condition
Customer States Rough "Idle"
Technical Background
Updated ECM software that addresses:
^ Rough Idle
Engine Control Modules Affected:
Production Solution
Not Applicable.
Service
Tip:
This Bulletin is used when a Rough Idle is the only complaint.
^ If ECM programming has previously been updated to Software (SVV) version 0050 (see Technical Bulletin - Customer States Vehicle Hesitates, instance 2010339):
This Bulletin DOES NOT apply (SW version 0050 contains the same rough Idle programming modifications that this Bulletin addresses).
Updating to SW version 0050 also changes the Throttle Valve mapping and may influence the Customer's perception of how the vehicle responds to throttle application.
When customer states a Rough Idle is accompanied by a Hesitation:
^ Perform ECM programming update version 0050 (unless previously performed) When Rough Idle is the only customer concern, proceed as follows:
PROCEDURE:
Engine Control Module Update - Programming (Flashing)
If you encounter a vehicle with a "TUNED" ECM, prior to performing the Update - Programming" (flashing) procedure:
Your Dealership should place the vehicle owner on notice in writing, that their ECM was found to have been tuned, and that any damage caused by the tuning of the ECM (including any adverse emissions consequences) will not be covered by Volkswagen of America, Inc. warranties.
For any repair requested by the owner under warranty or outside warranty that requires update programming, which will automatically wipe out the Tuning" program, your Dealership should advise the owner of the above and get Owner's written consent (see Control Module Tuning form) to the update programming procedure.
TOOL REQUIREMENTS:
1. VAS 5051 or VAS 5052 using Base CD V.10.01 and Brand CD V.10.70.00 or higher.
2. Update - Programming" (flashing) CD W42T0URSWU0040.
Tip:
Additional copies of the "Update - Programming" CD (Literature Number W42TOURSWU0040) may be ordered from the Volkswagen Technical Literature Ordering Center or by calling.
VEHICLE REQUIREMENTS:
Tip:
For software programming to execute properly, vehicle battery must be maintained by an approved VW battery charger/maintainer (INC-940).
Note:
Failure to comply with these guidelines may result in hardware and/or software programming failure!
1. Battery MUST have minimum no-load charge of 12.5V.
2. VAS 5051 or VAS 5052 must always be connected to the approved power supply at the approved voltages
3. VAS 5051: Connected to vehicle and to 110V AC Power supply at all times during procedure.
4. VAS 5052: Connected to vehicle with battery voltage requirements met.
5. Under no circumstances should the power supply be interrupted or the diagnostic connector unplugged during the update programming procedure.
6. Any appliances with high electromagnetic radiation (i.e. mobile phones) must be switch OFF.
Tip:
Before update programming, delete the fault memory in the ECM. Update programming is not possible when an EEPROM fault is active.
Reprogram ECM with CD - Part number W42TOURSWU0040.
Insert the programming CD into the VAS 5051 / 5052 an access the ECM.
Tip:
If the update programming button does not appear, the latest version has already been installed to the level below.
^ Programming starts by pressing the "Update Programming" button and following the on screen prompts.
Note:
Once update programming begins, on NO occasion should the Cancel button be selected.
^ Press the Update Programming" button.
^ Once update programming is complete, turn OFF ignition for 30 seconds.
^ After a minimum of 30 seconds, turn ON ignition.
Tip:
It is recommended to use 1001 - Compiling Services prompted to clear faults stored in various control modules.
Warranty
* Code per warranty vendor code policy.
Required Parts and Tools
No Special Tools required.
Tip:
Part number(s) are for reference only. Always see ETKA for the latest part(s) information.