Mazda MAZDA3 2012–2013 — technical service bulletin
Bulletin 01-020-13-2816 · NHTSA communication 10097401 · issued Jul 17, 2013
Technical service bulletin
communication type
Power Train
component
2012–2013
model years
2
vehicle entries
Official 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 softw
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.