Grand Caravan AWD V6-3.8L VIN L (2001)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine Controls - Battery Lamp ON/False DTC P1594
NUMBER: 18-023-03
GROUP: Vehicle Performance
DATE: June 20, 2003
THIS BULLETIN IS BEING PROVIDED IN ADVANCE. THE MDS2 MUST BE OPERATING WITH CIS CD2136 OR HIGHER, AVAILABLE
JULY 7, 2003.
SUBJECT:
Flash: Battery Light Illumination, Erroneous Diagnostic Trouble Code (DTC) P1594
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.
MODELS:
2001 - 2003
(RS)
Town & Country/Caravan/Voyager
NOTE:
THIS BULLETIN APPLIES TO U.S. AND CANADIAN MARKET VEHICLES EQUIPPED WITH 3.3L OR 3.8L ENGINE (SALES CODES
EGA, EGM, OR EGH).
SYMPTOM/CONDITION:
Vehicle operator may experience Battery light illumination.
Technician may find DTC P1594 - Charging System Voltage Too High.
DIAGNOSIS:
Using a Scan Tool (DRBIII(R)) with the appropriate Diagnostic Procedures, verify all engine systems are functioning as designed. If DTCs are present,
other than those listed above, record them on the repair order and repair as necessary before proceeding further with this bulletin.
If the vehicle operator describes the Symptom/Condition and the technician finds DTC P1594, perform the Repair Procedure.
PARTS REQUIRED
EQUIPMENT REQUIRED
REPAIR PROCEDURE:
NOTE:
WHENEVER A PCM/TCM IS REPLACED OR REPROGRAMMED, THE SOFTWARE IN THE CONTROLLER AND DRBIII(R) MUST BE
VERIFIED AS HAVING THE LATEST REVISION LEVEL. IF A CONTROLLER SOFTWARE UPDATE FLASH IS AVAILABLE,
COMPLETE THE FLASH AND LABELING REQUIREMENT AS DIRECTED IN THE APPROPRIATE SERVICE BULLETIN IDENTIFIED
ON THE TechCONNECT/MDS2.
