Commander 4WD V8-4.7L Flex Fuel (2009)
Engine Control Module: Customer Interest
Engine Controls - MIL ON/DTC P2610 Set
NUMBER: 18-025-09
GROUP: Vehicle Performance
DATE: September 2, 2009
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 10.01 OR HIGHER TO PERFORM THIS PROCEDURE.
StarMOBILE DESKTOP CLIENT or StarSCAN MAY ALSO BE USED TO PERFORM THIS PROCEDURE.
SUBJECT:
Flash: Mil Illumination P2610 - PCM Internal Engine Off Timer Performance
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.
MODELS:
2009
(WK)
Grand Cherokee
2009
(WH)
Grand Cherokee (International Markets)
2009
(XK)
Commander
2009
(XH)
Commander (International Markets)
NOTE:
This bulletin applies to 2009 vehicles equipped with a 4.7L engine (Sales code EVE).
SYMPTOM/CONDITION:
Some customers may complain of a MIL Illumination. Upon further investigation the Technician may also find that P2610 - PCM Internal Engine Off
Timer Performance is set.
This is caused by the engine block heater (by design) keeping the engine block warm and the logic in the PCM was expecting a quicker cool down then
was actually achieved. The updated software compensates for the use of the engine block heater.
DIAGNOSIS:
Using a Scan Tool (wiTECH(TM) 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.
If the vehicle operator describes or experiences the Symptom/Condition, perform the Repair Procedure. If the engine block heater was not in use when
the code was set then it will be necessary to preform the diagnostics available DealerCONNECT/TechCONNECT, Refer To Group 28 - DTC Based
Diagnostics > Module - Powertrain Controller > Diagnostic and Testing > P2610 - PCM Internal Engine Off Timer Performance has been set.
PARTS REQUIRED:
REPAIR PROCEDURE:
NOTE:
