Engine Controls - MIL ON/DTC P0452 Set In Memory
NUMBER: 18-003-09 REV. CGROUP: Vehicle Performance
DATE: June 11, 2009
THIS BULLETIN SUPERSEDES SERVICE BULLETIN 18-003-09 REV. B, DATED MAY 29, 2009, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDES AN ADDITIONAL VEHICLE.
THE wiTECH DIAGNOSTIC APPLICATION IS THE PREFERRED METHOD FOR FLASHING ECUs.
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 9.05 OR HIGHER TO PERFORM THIS PROCEDURE.
StarMOBILE DESKTOP CLIENT or StarSCAN MAY ALSO BE USED TO PERFORM THIS PROCEDURE.
SUBJECT:
Flash: Driveability Improvements Or MIL Illumination Diagnostic Trouble Code P0452 - Evap Pressure Switch Stuck Closed
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.
MODELS:
**2008 (CS) Pacifica**
2009 (JC) Journey
2007 - 2009 (JS) Sebring/Avenger/Sebring Convertible
2008 - 2009 (RT) Town & Country/Voyager/Caravan (Includes
International Markets)
NOTE:
This bulletin applies to:
- **2008 CS vehicles equipped with a 4.0L Engine (Sales Code EGO)**.
- 2007, 2008 JS vehicles equipped with a 2.4L Engine and Automatic Transmission (Sales Code EDG or ED3 with DFF) built before June 19, 2008
- 2007, 2008 and 2009 JS vehicles equipped with a 2.7L and 3.5L engine (sales code EER or EGF) built Before October 15, 2008 (MDH 1015XX)
- 2008 RT vehicles equipped with a 3.3L or 3.8L or 4.0L engine (sales code EGV, EGL or EGQ)
- 2009 RT vehicles equipped with a 3.3L or 3.8L or 4.0L engine (sales code EGV, EGL or EGQ built before May 11, 2009 (MDH 0511XX).
- 2009 JC vehicles equipped with a 2.4L engine (sales code ED3 or EDG) built before August 20, 2008 (MDH 0820XX)
- 2009 JC vehicles equipped with a 3.5L engine (sales code EGF) built before September 6, 2008 (MDH 0906XX)
SYMPTOM/CONDITION:
Some customers may complain that the engine stumbles, runs rough, has idle fluctuations and/or surges at idle or there is a MIL illumination. Further investigation by the technician may find DTC:
- P0452 - Evap Pressure Switch Stuck Closed
DIAGNOSIS:
Using a Scan Tool (wiTECH or StarSCAN(R)) 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.
PARTS REQUIRED:
REPAIR PROCEDURE - USING THE INTERNET TO RETRIEVE THE FLASH FILE:
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. Clear the Variable Line Pressure (VLP) Counters, found in the Misc Function menu for the PCM ECU. VLP Clear Counters must be completed on all models.
c. 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.