Neon L4-2.0L VIN C (1998)
Throttle Position Sensor: Testing and Inspection
Component Testing
To perform a complete test of the this sensor and its circuitry use a DRB or equivalent scan tool and follow the appropriate procedures. To test the
throttle position sensor only, refer to the following:
The Throttle Position Sensor (TPS) can be tested with a digital voltmeter (DVM). The center terminal of the sensor is the output terminal. One of
the other terminals is a 5 volt supply and the remaining terminal is ground.
Connect the DVM between the center and sensor ground terminal. Refer to Diagrams/Electrical for correct pinout.
With the ignition switch in the ON position, check the output voltage at the center terminal wire of the connector. Check the output voltage at idle
and at Wide-Open-Throttle (WOT).
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At idle, TPS output voltage should be approximately O.38 volts- to 1.2 volts.
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At wide open throttle, TPS output voltage should be approximately 3.1 volts to 4.4 volts.
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The output voltage should gradually increase as the throttle plate moves slowly from idle to WOT.
NOTE: Check for spread terminals at the sensor and PCM connections before replacing the TPS.
