What is the normal throttle position?
As the throttle position is critical to engine control, the normal operating output range of the TPS is within some margin of the earth and reference 5 V supply voltages. For example, from around 0.5 V to around 4.5 V.
What is the signal voltage from throttle position sensor at wide open throttle position?
At wide open throttle, signal voltage is approximately 3.5 – 4.7 volts. Inside the TPS is a resistor and a wiper arm.
What is the voltage when the throttle is open?
As the throttle moves from its idle position, at around 0.5 s, the output progressively increases with increasing throttle opening. With the throttle at its fully open position, the output is around 3.7 V.
How does the throttle position sensor work on a car?
Throttle Position Sensor. It’s attached to the throttle plate shaft and changes output voltage as the plate opens and closes. The output voltage will be low or around 0.45 volts when the throttle is closed and will be high or 4.5 volts at (WOT) Wide Open Throttle. The fuel injection and ignition timing are adjusted by the PCM as…
How to check throttle position in idle mode?
If the voltage is normal with closed throttle valve, sharply open the throttle valve, switch must click, and the voltage should rise up to 5.0V. Check whether the idle mode switch terminal is not connected to ground. Disconnect the switch connector and check for presence of 5.0V voltage in the idle mode contact.
When does the throttle valve resistance equal 0?
When the throttle valve opening angle becomes greater than 72 degrees, the resistance will be equal to 0 Ω. If the switch does not work in the described way, and the turning on and turning off cannot be regulated by bending the levers driving the throttle valve, most likely the throttle switch is defective. Check the throttle valve state.
What is the voltage of the throttle sensor?
It’s attached to the throttle plate shaft and changes output voltage as the plate opens and closes. The output voltage will be low or around 0.45 volts when the throttle is closed and will be high or 4.5 volts at (WOT) Wide Open Throttle.
What is the output when the throttle is open?
As the throttle moves from its idle position, at around 0.5 s, the output progressively increases with increasing throttle opening. With the throttle at its fully open position, the output is around 3.7 V. The output is maintained whilst the throttle remains in the fully open position.
Where is the throttle position sensor TPS located?
Go to the drop-down menu bar at the lower left corner of the Waveform Library window and select Throttle position sensor TPS. A throttle position sensor signals the position of the throttle valve to the Engine Control Module (ECM). Throttle potentiometers are generally carbon track type units mounted directly onto the throttle butterfly spindle.
What’s the voltage range of a TP sensor?
In the case of the TP sensor, the resistance changes in response to the movement of the throttle shaft. Typically, most single TP sensors have an output voltage range between 0.5 volts (throttle closed) and 4.5 volts (throttle wide open).