NTC-7A: Checking TP Sensor Calibration
- Start engine and allow it to idle. Using scan tool, monitor engine speed (RPM) while wiggling Throttle Position (TP) sensor connector and wiring harness. TP sensor is located on throttle body. If RPM changes while wiggling connector and wiring harness, repair connector and wiring harness where wiggling caused RPM to change. Perform TEST VER-2A. If RPM does not change while wiggling connector and wiring harness, go to next step.
- Turn engine off. Turn ignition on, with engine off. Using scan tool, monitor TP sensor voltage while wiggling TP sensor connector and wiring harness. If TP sensor voltage changes while wiggling connector and wiring harness, repair connector and wiring harness where wiggling caused TP sensor voltage to change. Perform TEST VER-2A. If TP sensor voltage does not change while wiggling connector and wiring harness, go to next step.
- Turn ignition off. Visually inspect related connectors and wiring harness. Repair connectors and wiring harness as necessary. Perform TEST VER-2A. If connectors and wiring harness are okay, go to next step.
- Turn ignition on with engine off. Using scan tool, monitor TPS voltage while slowly moving throttle from closed position to fully open position. If TPS voltage changes smoothly, go to next step. If TPS voltage does not change smoothly, replace TPS. Perform TEST VER-2A.
- Ensure ignition is on, with engine off. Close throttle. Ensure throttle is fully closed and against throttle stop. Using scan tool, read TPS voltage with throttle fully closed. If TPS voltage is .92 volt or more, replace TPS. Perform TEST VER-2A. If TPS voltage is less than specified, go to next step.
- Ensure ignition is on, with engine off. Close throttle. Ensure throttle is fully closed and against throttle stop. Using scan tool, read TPS voltage with throttle fully closed. If TPS voltage is .92 volt or more, replace TPS. Perform TEST VER-2A. If TPS voltage is less than specified test is complete.