Engine Controls - MIL ON/DTC P050/Cold Start Rough Idle

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February 4, 2011

2022616 Supersedes T.B. VOl 1003 dated Feb. 10, 2010 to add model year 2009 vehicles.





Vehicle Information

Condition





Update Programming, MIL ON, P050D Cold Start - Rough Idle

Technical Background

Update programming of the Powertrain Control Module (PCM) with improved software to correct the DTC P050D.





Tip:

Production Solution

Improved PCM software has been introduced in production as of December 9, 2009.

Service

Update programming of the Powertrain Control Module (PCM) with new software.

DIAGNOSIS

Using a StarMOBILE(TM) with ElsaWeb and the appropriate Diagnostic Procedures, verify all engine systems are functioning as designed. If DTC's are present, record them on the repair order and repair as necessary before proceeding with this bulletin. If the customer describes the Symptom/Condition, or it can be reproduced, perform the Repair Procedure.

REPAIR PROCEDURE

Note
If this flash process is interrupted / aborted, the flash should be restarted.

1. Reprogram the Powertrain Control Module using the StarMOBILE with the latest software.

2. After PCM reprogramming, the following must be performed:

^ Clear any DTC's that may have been set in other modules due to reprogramming.

^ Clear the Variable Line Pressure (VLP) Counters, found in the Misc. Function menu for the PCM / ECU.

^ Perform the Quick Learn function, found in the Misc. Function menu for the PCM / ECU.








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.