DTC P0121 Throttle Position (TP) Sensor Performance

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    Circuit Description

    The Throttle Position (TP) sensor circuit provides a voltage signal that changes relative to throttle blade angle. The signal voltage will vary from less than 1 volt at closed throttle to about 4 volts at Wide Open Throttle (WOT). The...

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    Service Manual Table of Contents

    Document Tags

    Document Title: DTC P0121 Throttle Position (TP) Sensor Performance

    circuit

    throttle

    position

    sensor

    voltage

    signal

    angle

    volt

    closed

    wide

    open

    control

    predicted

    value

    engine

    condition

    reading

    action

    diagnostic

    test

    records

    data

    scan

    tool

    check

    following

    damaged

    system

    diagnosis

    poor

    connection

    harness

    wiring

    observe

    vehicle

    powertrain

    replacement

    specified

    reference

    short

    ground

    repair

    necessary

    procedures

    electrical

    problem

    found

    replace

    open throttle

    system check

    wiring harness

    reading scan

    reading specified

    specified value

    volt reference

    signal circuit

    repair procedures

    diagnosis problem

    throttle value

    sensor reading

    wide open throttle

    using scan tool

    sensor value engine

    value engine load

    powertrain control module

    control module replacement

    module replacement programming

    powertrain board diagnostic

    reading scan tool

    reading specified value

    connect test light

    test light volt

    light volt reference

    necessary repair procedures

    repair procedures electrical

    diagnosis problem found

    open throttle value

    observe sensor reading

    sensor reading scan

    scan tool sensor

    tool sensor reading

    sensor reading specified

    check following items

    following items signal

    items signal circuit

    sensor ground circuit

    problem found repair

    found repair wiring

    repair wiring harness

    signal circuit volt

    circuit volt reference

    volt reference circuit