THIS BULLETIN SUPERSEDES SERVICE BULLETIN 21-007-15, DATED JANUARY 30, 2015 WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE MARKED WITH **ASTERISKS** AND IS BEING REVISED TO INCLUDE NEW MODELS, UPDATED NOTE IN DISCUSSION HEADER AND UPDATED LABOR OP.
9 Speed Transmission Shift Enhancements - Adaptation Learn Procedure
This bulletin involves performing a subjectivity shift quality rating and performing the transmission adaptation learn procedure if required.
|2015 - 2016||(BU)||Jeep Renegade**|
|2014 - 2015||(KL)||Jeep Cherokee|
NOTE: This bulletin applies to vehicles equipped with the 948TE 9-Speed Automatic Transmission - (Sales Code DFJ) or (Sales Code DFH) and equipped with the following engines:
- **2016 FB equipped with all engines.
- 2015 UF equipped with all engines.
- 2015 - 2016 BU equipped with all engines.**
- 2014 KL equipped with a 3.2L engine (Sales Code EHB), 2.4L engine (Sales Code ED6), or 2.0L diesel engine (Sales Code EBT).
- 2015 KL equipped with a 2.0L diesel engine (Sales Code EBT) only.
The 948TE automatic transmission uses a shift algorithm, that includes learned information so that the shift quality remains, even as the transmission wears. This learned information is recorded in memory cells, referred to as “Adaptation Memory Cells”.
The adaptation memory cells are set to zero (0) on every new transmission (new in vehicle and/or replaced for service) and when the transmission control module is replaced for service. In addition, the adaptation memory cells are set to zero (0) anytime the transmission control module is flashed and when the transmission control module adaptation memory cells are cleared using the wiTECH diagnostic scan tool (Quick Learn/Valve Body Solenoid Learn).
Until the adaptation has been learned/relearned, the transmission shift quality may not meet the customer’s expectations.