Circuit Description

The accelerator pedal sensor is a 2 variable resistor sensor that monitors throttle opening and accelerator pedal sensor malfunction. The accelerator pedal sensor determines vehicle accelerator pedal position. ECM controls throttle motor and electromagnetic clutch based on the signal from accelerator pedal sensor. If DTC P1121 is set, ECM shuts down power to throttle control motor and electromagnetic clutch.

DTC P1121 is set when ECM consistently detects difference between VPA and VPA2 circuits out of tolerance. Possible causes are:

• Faulty accelerator pedal sensor.