A/T - Torque Conveerter Break In/Fluid Update: Overview
NUMBER: 21-18-99GROUP: Transmission
DATE: Nov. 5, 1999
SUBJECT:
Torque Converter Break In Information/ATF +4 Update
MODELS:
2000 (NS) Town & Country/Caravan/Voyager
2000 (GS) Chrysler Voyager (International Market)
NOTE:
THIS INFORMATION APPLIES TO MODELS EQUIPPED WITH A 41TE TRANSAXLE FILLED WITH ATF +4 TRANSMISSION FLUID.
DISCUSSION:
A running change was made in the 2000 model year to incorporate ATF +4. Assembly plant implementation is as follows:
MODELS BUILD DATE
GS AFTER NOVEMBER 8, 1999 (MDH1108XX)
NS AFTER OCTOBER 10, 1999 (MDH1O1OXX) WINDSOR ASSY PLANT
AFTER OCTOBER 18, 1999 (MDH1O18XX) ST LOUIS ASSY PLANT
11TH POSITION OF VIN - R = WINDSOR/B = ST LOUIS
In addition to this new fluid, Torque Converter Break In was implemented (on NS/GS models only) to eliminate early mileage shudder concerns. The break in feature burnishes the clutch material by operating the torque converter in partial Electronically Modulated Clutch Control (EMCC) for the first several hours of vehicle operation. After break in completion, the torque converter EMCC feature will operate normally.
Under normal circumstances, there is no need for further action once the break in process is completed. However, if a Transmission Control Module (TCM) is replaced with less than 1500 torque converter break in miles, or the torque converter is replaced at any time, the break in feature must be re-initialized using the DRB III.
The DRB III is used to view the break in status, and enable, or disable the feature. To access the DRB III screen, select DRB III standalone diagnostics, transmission diagnostics, miscellaneous, and TCC Break In.
NOTE:
IF A TCM IS REPLACED WITH LESS THAN 1500 TORQUE CONVERTER BREAK IN MILES, OR THE TORQUE CONVERTER IS REPLACED AT ANY TIME, THE BREAK IN FEATURE MUST BE RE-INITIALIZED.
2000 model year vehicles built prior to the above implementation dates were filled with ATF +3. ATF +4 can be used in these models by using the following procedures to update the vehicle for ATF +4 use. The benefits of using ATF +4 are described in Technical Service Bulletin 21-16-99 but most notably is the change in scheduled maintenance as follows:
RECOMMENDED SERVICE INTERVALS
Normal Maintenance (Schedule A) - None (Fill For Life)
Severe Maintenance (Schedule B) - Fluid/Filter 77,000 km (48,000 miles)
NOTE:
ATF +4 CAN BE USED AS A REPLACEMENT FLUID IN ALL 2000 MODEL GS/NS VEHICLES. THE FOLLOWING PROCEDURES ARE REQUIRED IF MAJOR TRANSAXLE SERVICE IS PERFORMED AND THE TRANSAXLE IS FILLED WITH ATF +4.
ATF +3 to ATF +4 UPDATE PROCEDURE
PARTS REQUIRED:
1 04669020 Label, Authorized Software Update
1 04275086 Label, Authorized Modification
1 04659086AB Dipstick, For Use With ATF +4
AR 05013457AA ATF +4 Type 9602 (Quarts)
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 PROCEDURE. THE MDS2 SYSTEM MUST BE OPERATING AT CIS CD2045 OR HIGHER.
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No: 08-19-45-91 TCM - Reprogram 0.5 Hrs.
21-75-17-50 Dipstick - Replace (Related) 0.1 Hrs.
FAILURE CODE: FM - Flash Module P8 - New Part