CH.75 - TP Sensors

After a TP sensor has been tested using the MIN / MAX function on a DMM , a reading of zero volts is displayed . What does this reading indicate ? a . The TP sensor is open at one point during the test . b . The TP sensor is shorted . c . The TP sensor signal is shorted to 5 - volt reference . d . Both b and c are possible .

a . The TP sensor is open at one point during the test .

Typical TP sensor voltage at idle is about a . 2.50 to 2.80 volts b . 0.5 volt or 10 % of WOT TP sensor voltage c . 1.5 to 2.8 volts d . 13.5 to 15.0 volts

b . 0.5 volt or 10 % of WOT TP sensor voltage

Which wire on a TP sensor should be back - probed to check the voltage signal to the PCM ? a . 5 - volt reference ( Vref ) b . Signal c . Ground d . Meter should be connected between the 5 - volt reference and the ground

b . Signal

Most TP sensors have how many wires ? a . 1 c . 3 b . 2 d . 4

c . 3

A TP sensor is what type of sensor ? a . Rheostat c . Potentiometer b . Voltage generating d . Piezoelectric

c . Potentiometer

After a TP sensor has been tested using the MIN / MAX function on a DMM , a reading of 5 volts is displayed . What does this reading indicate ? a . The TP sensor is open at one point during the test . b . The TP sensor is shorted . c . The TP sensor signal is shorted to 5 - volt reference . d . Both b and c are possible

c . The TP sensor signal is shorted to 5 - volt reference .

A P0122 DTC is retrieved using a scan tool . This DTC means a . the TP sensor voltage is low b . the TP sensor could be shorted - to - ground c . the TP sensor signal circuit could be shorted - to - ground d . All of the above

d . All of the above

Which sensor does the TP sensor back up if the PCM determines that a failure has occurred ? a . Oxygen sensor b . MAF sensor c . MAP tsensor d . Either b or c

d . Either b or c

A technician attaches one lead of a digital voltmeter to the ground terminal of the TP sensor and the other meter lead to the negative terminal of the battery . The ignition is switched to on , engine off and the meter displays 37.3 mV . Technician A says that this is the signal voltage and is a little low . Technician B says that the TP sensor ground circuit has excessive resistance . Which technician is correct ? a . Technician A only b . Technician B only c . Both Technicians A and B d . Neither Technician A nor B

d . Neither Technician A nor B

What type of sensor is used to measure the position of the throttle ? a . Negative temperature coefficient ( NTC ) thermistor b . Positive temperature coefficient ( PTC ) thermistor c . Engine speed ( RPM ) d . Potentiometer

d . Potentiometer