Repairing Infiniti Poor Acceleration

Oct. 23, 2023
This bulletin applies to all Infiniti vehicles equipped with electronic throttle control.

This bulletin applies to all Infiniti vehicles equipped with electronic throttle control. If the customer describes a lack of power or poor acceleration, perform the following checks before attempting any repair:

- Check for stored DTCs

- Check if the driver is resting their left foot on the brake pedal while accelerating. Advise the customer to avoid doing that.

- Use CONSULT-III plus in Engine Data Monitor to check operation of the brake lamp circuit signal. Monitor the brake switch during the incident...it should be “OFF.”

Causes of brake switch ON:

- Brake switch incorrectly adjusted (adjusted on when it should be off)

- Damaged brake lamp wiring/circuit (damage causes signal to ECU to show ON when it should be OFF.

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