D50/Power Ram 50 V6-181 3.0L SOHC (1991)
Control Module: Customer Interest
A/T - 41TE Harsh 2nd - 1st Gear Downshift
NO.: 21-16-93 Rev. A
GROUP: Transmission
DATE: Oct 8, 1993
SUBJECT:
Harsh 2-1 Downshift 41TE Transaxle
NOTE:
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 21-16-93 WHICH SHOULD BE REMOVED FROM YOUR FILES. THE
LABOR OPERATION NO. IS REVISED. CHANGES ARE HIGHLIGHTED BY **ASTERISKS**.
MODELS:
1989 - 1992
(AA) Acclaim/Spirit/LeBaron Sedan
(AC) Dynasty/New Yorker/New Yorker Salon
(AG) Daytona
(AJ) LeBaron Coupe/LeBaron Convertible
(AS) Caravan/Grand Caravan/Caravan CV
Voyager/Grand Voyager/Town and Country
1990 - 1992
(AY) Imperial/New Yorker Fifth Avenue
1992
(AP) Shadow/Sundance
SYMPTOM/CONDITION:
Some 41TE transaxies may exhibit a harsh 2-1 downshift. This condition may occur when coasting to a stop or after applying pressure to the accelerator
pedal at low vehicle speeds. Changes have been made to the Transmission Control Module (TCM) for the 1993 model year that significantly reduce 2-1
downshift harshness.
These new service controllers should only be used to repair vehicles with specific customer dissatisfaction with harsh 2-1 downshifts.
DIAGNOSIS:
1.
Confirm the 41TE transaxle fluid level is correct using the procedure in the appropriate Service Manual.
2.
Use the DRB II to read Diagnostic Trouble Codes (DTC) that may exist and Clutch Volume Indexes (CVI's) to determine if transaxle repair is
appropriate.
3.
Road test the vehicle to confirm 2-1 downshift harshness.
PARTS REQUIRED:
REPAIR PROCEDURE:
This bulletin involves replacing the Transmission Control Module (TCM).
1.
Use the procedure in the appropriate vehicle service manual to replace the TCM.
2.
When returning the vehicle to the customer, advise him/her that for the full benefit of the new TCM to be realized, approximately one week of
driving will need to be completed.
POLICY:
Reimbursable within the provisions of the warranty.