E 450 V8-5.4L (2009)
Throttle Position Sensor: Description and Operation
Throttle Position (TP) Sensor
Electronic Engine Controls
Electronic Engine Controls
Throttle Position (TP) Sensor
The TP sensor:
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sends the PCM a signal indicating the throttle plate angle.
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is the main input to the PCM from the driver.
For removal and installation, refer to Throttle Position (TP) Sensor - 5.4L See: Service and Repair or Throttle Position (TP) Sensor - 6.8L See: Service
and Repair.
Engine Control Components
Engine Control Components
Throttle Position (TP) Sensor
The TP sensor is a rotary potentiometer sensor that provides a signal to the PCM that is linearly proportional to the throttle plate/shaft position. The
sensor housing has a 3-blade electrical connector that may be gold plated. The gold plating increases the corrosion resistance on the terminals and
increases the connector durability. The TP sensor is mounted on the throttle body. As the TP sensor is rotated by the throttle shaft, four operating
conditions are determined by the PCM from the TP. These are:
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closed throttle (includes idle or deceleration)
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part throttle (includes cruise or moderate acceleration)
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wide open throttle (includes maximum acceleration or de-choke on crank)
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throttle angle rate
Typical TP Sensor
Typical TP Sensor