Ranger 2WD V6-182 3.0L (1995)
Throttle Position Sensor: Description and Operation
Throttle Position (TP) Sensor
PURPOSE
The Throttle Position (TP) sensor monitors throttle angle. The Powertrain Control Module (PCM) determines five operating modes from the
throttle angle signal:
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Closed throttle (idle or deceleration)
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Part throttle (cruise or moderate acceleration)
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Wide open throttle (maximum acceleration, A/C cutout, clear flood on crank)
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Throttle angle rate (for accelerator pump type function)
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Transmission shift schedule
The PCM uses the sensor input and reacts to control spark advance, Exhaust Gas Recirculation (EGR) flow, air/fuel ratio and A/C clutch cutout.
OPERATION
The TP sensor responds to the accelerator pedal movement. The TP sensor is a potentiometer that transforms the throttle plate opening angle into
output voltage, and sends the voltage signal to the PCM.
CONSTRUCTION
The TP sensor is rotary potentiometer that has a pivot arm that moves along a curved resistor. The sensor housing has a three blade gold plated
electrical connector. The gold plating increases corrosion resistance on terminals and increases connector durability.