Exam 21: Instrumentation and Information Displays

The ____________________ is the simplest type of magnetic gauge.

Describe how a fuel level sending unit operates.

An oil pressure sending unit may be called a piezoresistive sensor.

Park distance control systems are being discussed. Technician A says that as the distance between the vehicle and an object becomes closer, the intervals between the warning tones become longer. Technician B says that some systems have both visual and audible warnings. Who is correct?

Electronic odometer display readings are stored in the computer's RAM.

When the fluid level in a washer reservoir is low, the fluid level switch opens and the low washer level indicator lamp illuminates.

What is the difference between a warning light and an indicator light?

All the following are used as digital electronic displays EXCEPT:

The two types of electrical analog gauges are magnetic and ____________________.

The internal combustion engine in a hybrid does not normally run when the vehicle is at a standstill. What alerts the driver that the vehicle is capable of being driven?

Most tachometers operate from a cable driven by the engine's distributor or camshaft.

In an NTC-type thermistor, when the temperature is high, the resistance is ______.

The oil pressure light stays on whenever the engine is running. The oil pressure has been checked and it meets specifications. Technician A says a short to ground in the circuit between the indicator light and the pressure switch could be the cause. Technician B says an open in the pressure switch could be the cause. Who is correct?

Technician A says the low fuel warning indicator light is turned on when the fuel level drops below one-eighth of the tank capacity. Technician B says the fuel gauge sending unit is normally combined with the electric fuel pump. Who is correct?

What is the function of an IVR [instrument voltage regulator]?

Identify various causes of intermittent electrical/electronic problems.

An engine coolant temperature sending unit may be called a piezoresistive sensor.

Which of the following is NOT a component of an analog gauge system?