Exam 5: Computers and Input Sensors

The coolant temperature sensor is a negative temperature coefficient sensor; therefore:

What is EEPROM memory, and how does it differ from older PROM memory?

What is the CAN protocol, and how is it standardized?

Technician A says that a digital voltage signal is continuously variable within a certain voltage range. Technician B says an amplification circuit in the input conditioning chip will amplify a low voltage signal. Who is correct?

The OBD II test strategies compare sensor inputs to one another during a rationality test to see if the inputs make sense with the expected outcome .

What is each one (1) or zero (0) in a data stream is referred to as?

What sensor has the wide range air/fuel ratio sensor (AFS) taken the place of?

What is a speed density program and how does it work?

What type of tools may be used to monitor the operation of a conventional oxygen sensor?

The air/fuel ratio sensor (AFS) circuit can be measured directly with a digital multimeter with accuracy.

A baseline is performed by driving a vehicle or placing it on a dynamometer and driving a repeatable drive cycle that includes all of the following except:

Technician A says that the conventional oxygen sensor produces a fluctuating high/low voltage signal. Technician B says an air/fuel ratio sensor produces a more constant output signal voltage. Who is correct?

Mass air flow sensor voltage corresponds to:

Why would an air/fuel ratio sensor be used instead of a conventional oxygen sensor?

What is a controller area network (CAN)?

Most of today's computers utilize a technology that allows for electronically erasable programmable read-only memory (EEPROM).