This bulletin applies to all Infiniti vehicles equipped with electronic throttle control. If a customer describes a lack of power or poor acceleration, check for stored DTCs.
Ask if the driver is resting their left foot on the brake pedal while accelerating. If they admit to doing this, advise them to avoid this practice.
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 the brake switch in the ON position include the brake switch being incorrectly adjusted or damaged brake lamp wiring/circuit damage causing a signal to the ECU to show ON when it should be OFF.
