Engine Controls - MIL ON/DTC P050D/Cold Start Rough Idle
NUMBER: 18-001-10 REV. BGROUP: Vehicle Performance
DATE: December 01, 2010
THIS BULLETIN SUPERSEDES SERVICE BULLETIN 18-001-10 REV. A, DATED APRIL 28, 2010, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE THE ADDITION OF 2008 AND 2009 RT MODELS.
HELP USING THE wiTECH DIAGNOSTIC APPLICATION FOR FLASHING AN ECU IS AVAILABLE BY SELECTING "HELP" THEN "HELP CONTENTS" AT THE TOP OF THE wiTECH DIAGNOSTIC APPLICATION WINDOW.
THE wiTECH SOFTWARE LEVEL MUST BE AT RELEASE 11.01 OR HIGHER TO PERFORM THIS PROCEDURE.
SUBJECT:
Flash: MIL Illumination For PO5OD - Cold Start Rough Idle
OVERVIEW:
This bulletin involves flash reprogramming the Powertrain Control Module (PCM) with new software.
MODELS:
**2008** - 2010 (RT) Town & Country/Grand Voyager
2010 (JC) Journey
2010 (JS) Sebring/Avenger/Sebring Convertible
2009 (WH) Grand Cherokee (International Markets)
2009 (XK) Commander
2009 (XH) Commander (International Markets)
2009 (WK) Grand Cherokee
NOTE:
This bulletin applies to:
a. 2010 RT vehicles built with a 4.0L engine (sales code EGQ) and a 62TE transmission (sales code DG2) before December 09, 2009 (MDH1209XX).
b. 2008 and 2009 RT vehicles built with a 62TE transmission (sales code DG2).
c. 2009 WK, WH, XK and XH vehicles equipped with a 4.7L engine (Sales code EVE) and a 545RFE automatic transmission (Sales code DGQ).
d. 2010 JS or JC vehicles 3.5L or 2.7L engine (Sales Codes EGF or EER) built before December 17, 2009 (MDH 1217XX).
SYMPTOM/CONDITION:
Some customers may complain of a MIL illumination. Upon further investigation the Technician may find that PO50D - Cold Start Rough Idle has been set.
DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in TechCONNECT, verify all engine systems are functioning as designed. If DTC's other then the one listed above are present record them on the repair order and repair as necessary before proceeding further with this bulletin.
If the vehicle operator describes or experiences the Symptom/Condition, perform the Repair Procedure.
PARTS REQUIRED:
REPAIR PROCEDURE:
NOTE:
If this flash process is interrupted/aborted, the flash should be restarted.
1. Reprogram the PCM with the latest software. Follow the detailed service procedures available in DealerCONNECT/TechCONNECT, Refer To Group 8 - Electrical > Electronic Control Modules - Service Information > Module - Powertrain Control > Standard Procedures> PCM/ECM Programming - Gas.
After PCM reprogramming, the following must be performed:
a. Clear any DTC's that may have been set in other modules due to reprogramming. The wiTECH application will automatically present all DTCs after the flash and allow the tech to clear them.
b. On 62 TE models, clear the Vanable Line Pressure (VLP) Counters, found in the Misc Function menu for the PCM ECU.
c. On 62 TE models, perform the Quick Learn function, found in the Misc Function menu for the PCM ECU.
2. Type the necessary information on the "Authorized Modification Label" and attach it near the VECI label.**
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
FAILURE CODE:
Disclaimer:
This bulletin is supplied as technical information only and is not an authorization for repair.