P2128 2009 TOYOTA CAMRY - Throttle Pedal Position Sensor/Switch 'E' Circuit Input High
Tech notes2007-2010 Toyota Camry apply for the recall for a bad Accelerator Pedal Position (APP) Sensor. You can call Toyota and check to see if your vehicle applies for the recall.
P2128 2009 Toyota Camry DescriptionThe Accelerator Pedal Position (APP) sensor is mounted on the accelerator pedal to detect the angle of the accelerator pedal. This sensor is electronically controlled and uses Hall-effect elements.
In the accelerator pedal position sensor, the voltage applied to terminals VPA and VPA2 of the Engine Control Module (ECM) changes between 0 V and 5 V in proportion to the angle of the accelerator pedal. The VPA is a signal to indicate the actual accelerator pedal angle and is used for the engine control. VPA2 is used to detect malfunctions of the sensor itself.
The ECM monitors the accelerator pedal angle from VPA and VPA2 signal outputs, and controls the throttle motor based on these signals.
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