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Home >> Jeep >> 2001 >> Cherokee Classic, 4WD, Part Time >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Engine Sensors & Switches >> Checking Throttle Position Sensor Operation
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Checking Throttle Position Sensor Operation

NOTE: For circuit identification and wiring diagram, see WIRING DIAGRAMS article. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-2  under VERIFICATION TESTS to ensure system is functioning properly.
  1. Turn ignition on. Ensure throttle is fully closed and against throttle stop. Using scan tool, read TP sensor voltage with throttle fully closed. If voltage is 1.5 volts or less, go to next step. If voltage is more than 1.5 volts, replace TP sensor.
  2. Using scan tool, monitor TP sensor voltage while slowly moving throttle from closed position to fully open position. If voltage changes smoothly from about 0.8 volt to more than 3.5 volts, TP sensor is functioning properly. Test is complete. If voltage does not change smoothly from about 0.8 volt to more than 3.5 volts, replace TP sensor.
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