TSBs

Repairing Infiniti Poor Acceleration

Oct. 23, 2023

This bulletin applies to all Infiniti vehicles equipped with electronic throttle control.

If the customer describes a lack of power or poor acceleration, perform following checks before attempting any repair.

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.

About the Author

Information courtesy of Mitchell 1

Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.