What is the typical throttle position sensor TPS voltage at idle?
The sensor may also become loose causing the readings to be inaccurate. The powertrain control module (PCM) supplies a 5 Volt reference signal to the (TPS) and usually a ground. A general measurement is: at idle = . 5 Volts; full throttle = 4.5 Volts.
What should the TPS read at idle?
At idle is should be zero or a couple of degrees. Press down on the gas pedal very S-L-O-W-L-Y until the throttle is all the way open. You should see the percentage of throttle opening gradually increase to 100 percent at wide open throttle.
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 are the signs of a bad TPS sensor?
An unexplainable bucking and jerking in the vehicle.
What kind of problem does a Toyota 4Runner have?
I have a 1994 Toyota 4Runner 3VZ-E (V6) SR5 with 192K. Recently, it started having problems idling (cold or warm). Symptoms are loping idle from ~200rpm – 1000rpm. Problem comes and goes and does not seem related to the engine temperature.
How does the throttle position sensor work on a Toyota?
The TPS is mounted on the throttle body and converts the throttle valve angle into an electrical signal. As the throttle opens, the signal voltage increases. The ECM uses throttle valve position information to know: • engine mode: idle, part throttle, wide open throttle.
What should the voltage be at idle on a Toyota?
At idle, the resistance between the VC (or VCC terminal and VTA terminal is high, therefore, the available voltage is approximately 0.6 – 0.9 volts. As the contact arm moves closer the VC terminal (the 5 volt power voltage), resistance decreases and the voltage signal increases.
Where is the TPS located on a Toyota?
The TPS is mounted on the throttle body and converts the throttle valve angle into an electrical signal. As the throttle opens, the signal voltage increases.