Is the throttle position sensor the same as the app sensor?
Throttle Position Sensor (TPS) The electrical circuitry to both the APP and TPS sensors is the same. Just like the APP sensor, the TPS sensor unit is mounted on the throttle body and converts the throttle body butterfly valve angle position into a voltage signal, which is transferred to the PCM unit.
What should the voltage of the throttle sensor be?
Use a scan tool to monitor Throttle Position Sensor (TPS) 1 and TPS 2 voltage while fully depressing and releasing the accelerator pedal. TPS voltages should move opposite of each other in smooth increments within a normal voltage range (0.35-5 volts).
What happens when the throttle switch is closed?
When the throttle switch is closed, ohmmeter must read circuit break (infinite resistance). Slowly open the throttle valve. When the switch opens it should click and the resistance should remain equal to infinity. When the throttle valve opening angle becomes greater than 72 degrees, the resistance will be equal to 0 Ω.
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.
Throttle Position Sensor (TPS) The electrical circuitry to both the APP and TPS sensors is the same. Just like the APP sensor, the TPS sensor unit is mounted on the throttle body and converts the throttle body butterfly valve angle position into a voltage signal, which is transferred to the PCM unit.
When the throttle switch is closed, ohmmeter must read circuit break (infinite resistance). Slowly open the throttle valve. When the switch opens it should click and the resistance should remain equal to infinity. When the throttle valve opening angle becomes greater than 72 degrees, the resistance will be equal to 0 Ω.
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.
What should the voltage be on the throttle valve?
In most systems the voltage reading should be less than 0.7V. Open and close the throttle valve several times, by checking the smoothness of the rising voltage. Connect an ohmmeter between the potentiometer wiper and the reference voltage terminal or between the potentiometer wiper and the ground.