RAM 2500 Van V8-5.2L Prop VIN 2 (2000)
Technical Service Bulletin # 21-20-99
Date: 991129
A/T - 46RE Shift Quality/Durability Improvement
NUMBER: 21-20-99
GROUP: Transmission
EFFECTIVE DATE: Nov. 29, 1999
SUBJECT:
46RE Transmission Shift Quality Improvement for a Drive - Rev - Drive Shift Maneuver
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the JTEC Powertrain Control Module (PCM) with new software (calibration change
OOCal13 and O0Cal13A).
MODELS:
2000 (AB) Ram Van
2000 (AN) Dakota
2000 (BR/BE) Ram Truck
2000 (DN) Durango
NOTE:
THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH A 46RE AUTOMATIC TRANSMISSION BUILT BEFORE NOVEMBER
12, 1999 (MDH 1112XX).
SYMPTOM/CONDITION:
A change has been made to the PCM software to improve the durability of the transmission internal friction components when certain
Drive-Reverse-Drive shift maneuvers are attempted. This type of shift maneuver is often associated with, but not limited to, snow plowing activities.
The new PCM software improves upon the current engine torque management when the above shift maneuvers are attempted.
DIAGNOSIS:
Using the Mopar Diagnostic System (MDS2) and or the Diagnostic Scan Tool (DRB III) with the appropriate Diagnostic Procedures Manual, verify all
engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as
necessary before proceeding further with this bulletin. If no DTC's are present, and the above symptoms have been experienced, perform the Repair
Procedure.
NOTE:
WHENEVER A POWERTRAIN CONTROL MODULE (PCM) IS REPLACED DUE TO FAILURE, THE SOFTWARE OF THE
REPLACEMENT CONTROLLER MUST BE VERIFIED FOR THE LATEST REVISION LEVEL. USE THE FLASH PROCEDURE TO
UPDATE REPLACED CONTROLLERS AS NECESSARY.
PARTS REQUIRED:
1
04669020
Label, Authorized Software Update
1
04275086
Label, Authorized Modification
EQUIPMENT REQUIRED:
1
CH6OOO
Scan Tool (DRB III)
1
CH7035
General Purpose Interface Bus Cable (GPIB)
1
CH7OOO/7001
J1962 Cable
1
MDS2
NOTE:
THE MDS2 AND DRB III ARE REQUIRED TO PERFORM PART OF THIS REPAIR. WHEN USING THE MDS2 AND THE DRB III, THE
SYSTEM MUST BE OPERATING AT CIS CD 2046 OR HIGHER.
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No:
08-19-43-97
0.5 Hrs.
FAILURE CODE: FM - Flash Module
