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/PT 79-0007.pdf
JEA8042 PT 79 0007 Battery Not Charging After Replacement of Chrysler PCM 1996 1998 Cherokee XJ Grand Cherokee ZJ Grand Cherokee European Market ZG Dakota AN Ram Truck BR BE Ram Van AB Wrangler TJ and 1998 Durango DN No charging condition after replacing PCM It has been found under certain KEY ON or momentary KEY OFF conditions when the black connector is unplugged the PCM may attempt to write information to the EEPROM processor within the PCM Sometimes this inadvertent write will set the target charging voltage to 0 Zero volts The result will prevent the charging system from charging the battery If this occurs the only correction is PCM replacement This problem may occur when a unit is being installed for testing purposes and then unplugged before the key is turned off Reference TSB 18 21 98 Whenever any connector on the PCM is disconnected the ignition switch must be in the off position for a minimum of 5 seconds before connector removal This ProTech bulletin is supplied as technical information only and is not an authorization for repair Be sure to refer to the vehicle service manual and any applicable service bulletins for additional information Problem Cause Solution Note Application J Tech A J Tech B 54 73 mm 61 99 mm
