July 17, 2013 Service bulletin

Some vehicles may exhibit the engine RPM temporarily going up above 3,000 when the accelerator pedal is...

Mazda technical service bulletin 01-020-13-2816 for 2012-2013 Mazda MAZDA3.

Bulletin number: 01-020-13-2816
Component: Power train: automatic transmission: control module (TCM/PCM/tecm)
Summary: Some vehicles may exhibit the engine RPM temporarily going up above 3,000 when the accelerator pedal is slightly pushed while shifting around 30 km/h (19 MPH). The engine RPM returns to idle if the driver takes their foot off the accelerator pedal. This concern is caused by improper calibration of the PCM for torque trim control. Torque trim control is used on this m/t to adjust the engine RPM to a suitable speed for the gear after shifting. The function only works when the driver steps on the accelerator pedal while shifting to help achieve smooth shifts. To correct the problem, the PCM software has been modified.

Owners of these vehicles have filed 58 complaints in the transmission category.

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