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Test NTC-5A - Checking Throttle Position Sensor Calibration

  1. Turn ignition on. Using scan tool, read Throttle Position (TP) sensor voltage. Ensure throttle is fully closed and against throttle stop. If voltage is more than 0.92 volt with throttle closed, replace TP sensor and perform TEST VER-2A. If voltage is not as specified, go to next step.
  2. Observe scan tool while slowly opening throttle to wide open position. If voltage change is not smooth, replace TP sensor and perform TEST VER-2A. If voltage change is smooth, go to next step.
  3. With throttle at closed position, wiggle wiring harness and connector going to TP sensor on throttle body while monitoring voltage. If voltage changes while wiggling wiring harness, repair wiring harness and connector as necessary and perform TEST VER-2A. If voltage does not change while wiggling wiring harness, go to next step.
  4. Start engine. Wiggle wiring harness and connector going to TP sensor on throttle body while monitoring engine speed (RPM). If RPM changes while wiggling wiring harness, repair wiring harness and connector as necessary and perform TEST VER-2A. If RPM does not change while wiggling wiring harness, go to next step.
  5. Inspect all related wiring and connections. Repair wiring and connectors as necessary and perform TEST VER-2A. If wiring and connectors are okay, TP sensor is operating properly. Test is complete.
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