News Technical Service Bulletins

Mazda Shift Shock

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This bulletin applies to 2016 Mazda CX-9 vehicles produced before October 17, 2016. Some customers may complain about a slight shift shock while accelerating from a stop, and no A/T-related DTCs are present. To avoid improper learning, the control logic of the TCM has been changed.

Reload the IDS to clear memory before reprogramming. Using IDS 103.3 or later software, reprogram the TCM to the latest calibration. TCM reprogramming takes about 10 minutes longer than PCM reprogramming. Always update the IDS tool first, then follow on-screen instructions to download the needed calibration file for TCM programming. It is not necessary to remove any fuses or relays during TCM reprogramming when the IDS screen prompts you to do so. 

After reprogramming the TCM, verify the repair by starting the engine and making sure there is no MIL illumination or abnormal warning lights on.

Initial learning procedure: Increase the ATF temperature by leaving the engine at idling or city driving. Verify that ATF temperature is between 151-230 degrees. Do not raise ATF temperature by stalling the engine.

With the vehicle standing still, depress the brake pedal and keep the gear selector lever in the Neutral position for three seconds. Then, shift the selector from neutral to drive maintain this condition for three seconds. Repeat this procedure five times. Then, repeat it again with the gear selector in the reverse position.


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