Exam 9: Computer Inputssensor Diagnostic Routines

What converts some measurement of vehicle operation into an electrical signal?

Piezoelectric devices are used to measure ____ by the generation of voltage.

____ means allowing the vehicle to sit without the engine running long enough that the coolant temperature equalizes with ambient temperature.

A potentiometer sensor can be used to measure linear or ____ movement.

A photo cell describes any component that is capable of measuring or determining ____.

____ refers to the sensor signal being as constantly proportional to the measured value as possible.

Explain the operation of the magnetically coupled linear sensor.

The capacitance discharge sensor changes its capacitance by the difference in voltage between the electrodes.

The best way to test the performance of Hall-effect inputs is to use a(n) ____.

Describe how a capacitance discharge sensor that produces a digital frequency output can be diagnosed.

A ____ is a series-parallel arrangement of resistors between an input terminal and ground.

The piezoelectric accelerometer generates an analog voltage proportional to vehicle speed.

Why are dual-range temperature sensor circuits used?

A Park/Neutral switch is being tested. When the transmission is placed in the park position, the voltage at the switch is 12 volts. When the transmission is shifted into reverse, the voltage drops to 0.0 volts. Technician A says the Park/Neutral switch needs to be replaced. Technician B says the ground circuit for Park/Neutral switch is open. Who is correct?

What type of switches operate on the principle that if a current is allowed to flow through thin conducting material exposed to a magnetic field, a voltage is produced?

What type of input device uses the principle of magnetic induction to produce an AC voltage signal?

The resistive multiplex switch is used to provide multiple inputs from a single switch using one sense circuit.

Describe the operation of the phototransistor.

Pressure switches will usually use a(n) ____ that works against a calibrated spring or other form of tension.

Explain the difference in photovoltaic and photoconductive modes as they relate to photodiodes.