- Engine Light ON
(or Service Engine Soon Warning Light)
- No throttle response
- Harness or connector (The TP sensor circuit is open or shorted.)
- Electric Throttle Control Actuator (or Throttle Body Motor)
- Accelerator Pedal Position Sensor (APP)
Electric Throttle Control Actuator consists of throttle control motor,
throttle position (TP)sensor, etc. The throttle position sensor responds
to the throttle valve movement.
The throttle position sensor
has the two sensors. These sensors are a kind of potentiometers which
transform the throttle valve position into output voltage, and emit the
voltage signal to the ECM
. In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM
. The ECM
judges the current opening angle of the throttle valve from these signals and the ECM
controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.
When is the code detected?
An unexpected voltage from the TP sensor is sent to ECM