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Home >> Infiniti >> 2000 >> Q45 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Engine Controls - Theory & Operation) >> Computerized Engine Controls >> Input Devices >> Throttle Position (TP) Sensor & Idle Switch
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Throttle Position (TP) Sensor & Idle Switch

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2000 Nissan Xterra, 2000 Nissan Sentra, 2000 Nissan Quest, 2000 Nissan Pathfinder, and 2000 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

TP sensor is attached to throttle body housing and is actuated by movement of accelerator pedal. TP sensor has a potentiometer which varies output voltage in response to changes in throttle position. This information is relayed to ECM in form of an input voltage signal on 3-terminal TP sensor harness. TP sensor also has ability to inform ECM of rate of changes taking place in throttle plate movement. Wide open and closed throttle position switch, built into TP sensor, is not used for engine control.

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