Dakota 2WD V6-239 3.9L Magnum (1996)
PROM - Programmable Read Only Memory: Customer Interest
PCM - Erroneous MIL Illumination/Driveability Concerns
NO: 18-03-96 Rev. B
GROUP: Vehicle Performance
DATE: Apr. 19, 1996
SUBJECT:
Erroneous MIL Illumination and/or Driveability Concerns
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 18-03-96 REV. A DATED FEB. 16, 1996 WHICH SHOULD BE REMOVED
FROM YOUR FILES. ADDITIONAL POWERTRAIN CONTROL MODULES (PCM) ARE SUPPORTED WITH MOPAR DIAGNOSTIC SYSTEM
(MDS) RELEASE 19 AND TIL 1105. ADDITIONALLY, IF A PREVIOUS PCM UPDATE FAILED TO CORRECT A CONDITION FOR
ERRONEOUS DIAGNOSTIC TROUBLE CODES (DTC) 76 AND 77, PERFORM A REFLASH. ENHANCEMENTS TO THE PCM SOFTWARE
WERE MADE FROM TIL 1100 TO 1105.
MODELS:
1996 (AB) Ram Van/wagon
1996 (AN) Dakota
1996 (BR) Ram Truck
1996 (XJ) Cherokee
1996 (ZJ) Grand Cherokee
1997 (TJ) Wrangler
SYMPTOM/CONDITION:
The following is a list of PCM updates for erroneous MIL (Check Engine Lamp) illumination and/or driveability concerns. Please perform updates to the
PCM for any vehicle listed above that you encounter.
NOTE:
IT IS NOT NECESSARY TO ALSO UPDATE THE PCM FOR CONDITIONS LISTED IN TSB 08-07-96 DATED MARCH 8, 1996 OR 24-03-96
DATED FEB. 23, 1996. PCM UPDATES PERFORMED WITH RELEASE 19 AND TIL 1105 WILL UPDATE THE SOFTWARE TO THE
MOST RECENT LEVEL AND INCLUDE ALL PREVIOUS REVISIONS.
NOTE:
IF YOU ENCOUNTER A DTC 76, YOU MUST VERIFY FUEL SYSTEM PRESSURE. USE THE APPROPRIATE SERVICE MANUAL FOR
INFORMATION ON FUEL PRESSURE TESTER INSTALLATION. THE FUEL PRESSURE MUST BE 49 PSI +/- 2 PSI. IF THE FUEL
PRESSURE IS OUT OF SPECIFICATION, REPAIR OR REPLACE ANY FUEL SYSTEM MALFUNCTIONING COMPONENTS AND
PERFORM THE PCM UPDATE.