A vehicle is being tested using a scan tool. Technician A says that the throttle position (TP) sensor should read between 0 and 1 volt. Technician B says that a factory or factory level scan tool is needed to check for proper voltage and current of the shift solenoids. Which technician is correct?

There are many throttle position sensors voltage check. Computer reference voltage to TP sensor is about 5V. Voltage drop should be less than 0.5 v while TP sensor output to computer is about 0.65v.

When a vehicle is being tested using a scan tool, the only the throttle position (TP) sensor that should read between 0 and 1 volt is the base voltage reading. The reading according to specifications is around 0.05v.

When checking for proper voltage for the opening and closing of the throttle, the voltage rises from 1 volt to a maximum of 5 volts.

Ammeter or multimeter can be used to check for proper voltage and current of the shift solenoids.

We can therefore conclude that both technicians A and B are incorrect. This is, non of them is correct.