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.
