S-Type (X200) V6-3.0L (2000)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
A/T - Harsh/Slow Shifts/Reprogram PCM
S307-07
S-TYPE
DATE
07/02
MODEL
2000-02 MY
S-TYPE 3.0L
VIN
L00001-M44997
Harsh/Slow Shifts - 3.0L V6 Vehicles - Reprogram PCM
Issue:
Customers of some 2000-01 MY S-TYPE vehicles may complain about harsh shifts or shifts that take too long to complete.
To improve harsh gear change, and the general performance of the automatic transmission, the Powertrain Control Module (PCM) should be
re-programmed using the latest release (JTP759/14 or later) of the Worldwide Diagnostic System (WDS) disc.
Note:
The PCM is described as an ECM when using WDS.
When entering the ECM re-configuration section the user will be prompted to determine the engine serial number of the vehicle.
If the first six digits of the engine number are outside the specified serial number range (103981*** to 127908***) the user will be allowed through to
re-calibrate the vehicle PCM with a standard set of calibrations.
If the engine serial number falls within the given range the system will automatically divert to a more aggressive set of calibrations.
Action:
In case of a customer complaint of the above condition on a 2000-01 MY S-TYPE vehicle within the above VIN range, follow the workshop procedure
outlined below.
PCM REPROGRAMMING PROCEDURE