Patriot 4WD L4-2.4L VIN W (2007)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine Controls - MIL ON/DTC P0171 Stored In Memory
NUMBER: 18-016-08 REV. A
GROUP: Vehicle Performance
DATE: September 11, 2008
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 18-016-08, DATED APRIL 23, 2008, WHICH SHOULD BE REMOVED
FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE THE ADDITION OF 2007 MODEL
YEAR.
THE StarSCAN(R) FLASH FILES FOR THIS BULLETIN MUST BE RETRIEVED FROM THE INTERNET.
StarSCAN(R) SOFTWARE LEVEL MUST BE AT RELEASE 9.02 OR HIGHER.
StarMOBILE DESKTOP CLIENT -OR- StarMOBILE STANDALONE MODE MAY ALSO BE USED TO PERFORM THE FLASH.
SUBJECT:
Flash: MIL Illumination with DTC P0171
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM).
NOTE:
Vehicles equipped with a CVT transmission must have the transmission control module (TCM) checked for the latest software level whenever the
PCM software is updated. If newer TCM software is available, it must be installed. Failure to maintain software coordination may result in MIL
illumination or driveability concerns.
MODELS:
**2007** - 2008
(MK49)
Compass
**2007** - 2008
(MK74)
Patriot
**2007** - 2008
(PM)
Caliber
NOTE:
This Bulletin applies to **2007 and** 2008 models equipped with a 2.4L engine & automatic CVT transmission (Sales Code ED3 with DAV or
DAW) built prior to April 2, 2008 (MDH 0402XX).
SYMPTOM/CONDITION:
Some customers may experience intermittent MIL Illumination. This may be noticed after driving at high speeds, up grades or towing trailers (heavy
engine load). No other symptoms will be noted or experienced. Further investigation by the technician may find DTC P0171 - Fuel System 1/1 Lean.
DIAGNOSIS:
Using a Scan Tool (StarSCAN(R)) with the appropriate Diagnostic Procedures available in TechCONNECT, verify all engine systems are functioning as
designed. If DTC's other than those listed above are present record them on the repair order and repair as necessary before proceeding further with this
bulletin.
If the above symptom/condition is experienced and cause for the DIG cannot be determined, perform the Repair Procedure.
PARTS REQUIRED:
