Engine Performance 2 Pre-Test

About how much signal voltage is generated by a throttle position sensor at closed throttle?

• 1 volt

• 10 volts

• 50 volts

• 100 volts

Who is correct? Tech A says that analog signals are continuously variable signals. Tech B says that digital signals are direct on/off signals with no in-between transition.

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Who is correct? Tech A says that in modern vehicles, an oxygen sensor is only positioned in the exhaust pipe after the catalytic converter. Tech B says that the oxygen sensor provides the electronic body control module (EBCM) with an electrical signal that relates to the amount of oxygen in the exhaust gas.

• Tech A

• Tech B

• Both Techs A and B

• Neither Tech A nor B

Which of the following is the best tool to measure the voltage output from a throttle position sensor?

• Scan tool

• DVOM

• DMM

• Digital storage oscilloscope (DSO)

Which part of a powertrain control module retains diagnostic trouble codes (DTC's), freeze-frame data, and learned data?

• Memory and storage section

• Sensor input/output signal processing section

• Data processing section

• Output drivers section

Which node of the PCM translates information from, or to, the other networks so that it can be shared between networks?

• Gateway node

• Program node

• Memory node

• Data node

Who is correct? Tech A states that the PCM also communicates with other electronic control modules on the vehicle. Tech B states that the PCM is a gateway node that is connected to each of the other networks.

• Tech A

• Tech B

• Both A and B

• Neither A nor B

The data processor function of a PCM receives the data from the input signal processing section and compares it to _______ in the memory.

• Control module charts

• Adaptive learning

• Data maps

• Self-diagnostics

The _______ is hardware related and makes up the physical portion of the PCM.

• Output drivers section

• Memory and storage section

• Data processing section

• Signal processing section

In an engine management system, work is done by the actuators, which consist of all of the following EXCEPT:

• relays.

• solenoids.

• modules.

• capacitors.