Engine Controls - Cold Start Rough Idle

01 13 09

March 11, 2013

2027780/2 *Supersedes Technical Bulletin V011113 dated October 21, 2011 due to additional model year applicability.*





Vehicle Information

Condition

Update Programming to Eliminate Cold Start - Rough Idle Concern

Note:
DO NOT diagnose or replace components due to cold start rough idle concerns before performing the update function as explained in this bulletin.

Technical Background

Customers may complain of a rough running condition that occurs during cold start.

DO NOT replace any parts for this condition.

This condition as described does not affect vehicle performance or operation.

Production Solution

Improved software

Service

Update-Programming Procedure:

Tip:
To Update-Programming using SVM, review and follow instructions in Technical Bulletin Instance 2014603 "Software Version Management".

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.

Note:
Prior to launching VAS-PC application and starting control module update process, confirm tester screen saver and power settings in accordance with Special Tools and Equipment - Service Information Circular # VSE-08-18.
Failure to do so may result in the tester entering power save mode during data transfer, and subsequent control module failure.

When using a VAS 6150/5051B or VAS 5052A tester in conjunction with a VAS 5054A wireless transmitter head for a flash procedure, please connect a USB cable between the transmitter head and the tester. Failure to do so
may lead to errors during the flash procedure.





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

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

WARNING:
Radiator Fan(s) may cycle ON high speed during the Update Process! There is a risk that personal injury may result if contact is made with spinning fan blades.

Keep hands and all objects away from Radiator Fan(s) during Update Process!

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 or action is carried out that is not explicitly stated in the Technical Bulletin.





Ensure ECM/TCM Tuning Form has been completed and signed by customer as required in SVM Technical Bulletin Instance 2014603








Warranty





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.