3 L4-2.3L (2004)
PROM - Programmable Read Only Memory: Customer Interest
Engine Controls - A/T 1-2 Shift Shock
TSB: 05-010/05
2004-2005 MAZDA3
1 - 2 SHIFT SHOCK
APPLICABLE MODEL(S)/VINS
2004-2005 Mazda3 (Automatic transmission only)
DESCRIPTION
Some vehicles may exhibit intermittent shift shock during 1-2 upshift. The symptom is due to improper PCM calibration. A revised PCM calibration is
now available to correct this issue.
Customers having this concern should have their vehicle repaired using the following repair procedure.
REPAIR PROCEDURE
1.
Reboot the WDS PTU to clear memory before reprogramming.
2.
Using WDS B39.11 or later software, reprogram the PCM to the latest calibration (refer to "Calibration Information" table) by following the
"Module Reprogramming" procedure.
NOTE:
^
Always update the WDS PTU first, then install the needed calibration file that WDS shows during PCM reprogramming. Go to "WDS
Calibration" on ESI and download the "update" file. If the PTU is not updated to the latest WDS calibration level, the calibration file will not
install into the PTU.
^
It is not necessary to remove any fuses or relays during PCM reprogramming when the WDS screen prompts you to do so. You may accidentally
stop power to one of the PCM terminals and cause the PCM to be blanked, or you may receive error messages during the WDS reprogramming
procedure.
^
WDS shows the calibration part numbers after programming the PCM.
^
Please be aware that PCM calibration part numbers and file names listed in any Service Bulletin may change due to future releases of WDS
software, and additional revisions made to those calibrations for service related concerns.
^
When reprogramming a PCM, WDS will always display the "latest" calibration P/N available for that vehicle. If any calibration has been
revised/updated to contain new information for a new service concern/issue, it will also contain all previously released calibrations.
^
When performing this procedure, if the WDS PTU is not docked and connected to 115V-120V, we recommend that a battery charger be installed
on the vehicle battery and turned ON to a maximum charge of no more than 20 AMPS to keep the vehicle battery up to capacity. If you exceed
20 AMPS, it will damage the WDS PTU. Also the external battery power supply cable should be connected to the vehicle battery and the PTU.
3.
After performing the PCM reprogramming procedure, verify the repair by starting the engine and making sure there are no MIL illumination or
abnormal warning lights present.
NOTE:
^
If any DTCs should remain after performing DTC erase, diagnose the DTCs according to the appropriate Troubleshooting section of the
Workshop Manual.
^
After PCM reprogramming, it is no longer necessary to road test the vehicle to "relearn" KAM (Keep Alive Memory).
