chapter 73

Typical TP sensor voltage at idle is about ______.

0.5 volt or 10% of WOT TP sensor voltage

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

0.5 volt or 10% of WOT TP sensor voltage

Most TP sensors have how many wires?

3

tp sensor voltage at wide open throttle is

4.5

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

All of the above are correct

Which is not a function of a TP sensor? Clear flood mode operation Torque converter clutch operation Air-conditioning compressor clutch operation Determining rich and lean air-fuel mixtures

Determining rich and lean air-fuel mixtures

Which sensor does the TP sensor backup if the PCM determines that a failure has occurred?

MAF sensor MAP sensor

Which sensor does the TP sensor backup if the PCM determines that a failure has occurred?

MAP or MAF sensor

the TP sensor is used as a back up to the

MAP/MAF

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?

Neither A or B

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?

Neither Technician A nor B

A TP sensor is what type of sensor?

Potentiometer

A TP sensor is what type of sensor? Piezoelectric Rheostat Potentiometer Voltage generating

Potentiometer

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

Signal

Which wire on a TP sensor should be back-probed to check the voltage signal to the PCM?

Signal

Which sensor is generally considered to be the electronic accelerator pump of a fuel injected engine? TP sensor Engine MAP sensor O2S ECT sensor

TP sensor

Which sensor is generally considered to be the electronic accelerator pump of a fuel-injected engine?

TP sensor

what is also used as an input sensor for the air conditioning compressor operation

TP sensor

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?

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

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? The TP sensor is open at one point during the test. The TP sensor is shorted. The TP sensor signal is shorted to 5-volt reference. Both B and C are possible.

The TP sensor is opened at one point during the test

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?

The TP sensor signal is shorted to 5-volt reference

A P0122 DTC is retrieved using a scan tool. This DTC means ______ .

The TP sensor voltage is low The TP sensor could be shorted-to-ground The TP sensor signal circuit could be shorted-to-ground

A TP sensor can be tested using

a digital multimeter, a digital storage oscilloscope (DSO), or a scan tool.

if the PCM detects that the throttle is at or close to wide open, the _____________ is disengaged

air conditioning compressor

The TP sensor is used by the PCM for

clear flood mode, torque converter engagement and release, and automotive transmission shift points, as well as for rationality testing for the MAP and MAF sensor.

the throttle position sensor used on fuel injected vehicles acts as an

electronic accelerator pump

There are two types of TP sensors used in electronic throttle control (ETC) systems

potentiometers and Hall-effect

what is applied when the vehicle is lightly accelerating and during cruise conditions to help improve fuel economy

torque converter clutch