UNDERSTANDINGENGINE COMPUTER CONTROLS 6

Name Date Score _

INSTRUCTIONS

OBJECTIVE 1

OBJECTIVE 2

Write the letter of the answer on each blank provided.

Describe the functions of the basic components of acomputer system.

1. True or False: Sensors provide information to thecomputer.

A. trueB. false

2. True or False: Actuators perform tasks in response toan output signal.

A. trueB. false

3. True or False: The microprocessor uses binary code toanalyze data.

A. trueB. false

Match the names of common sensors ~the functionsmonitored by the sensors.

4. Which of the following sensors measures the amount ofoutside air flowing into the intake manifold?

A. air change sensor (ACS)B. camshaft position sensorC. coolant temperature sensor (CTS)D. crankshaft position sensorE. mass airflow (MAF)sensor

May be photocopied for student use.

TEACHER MATERIALS - Engine Performance SpecialistWRITTEN TEST - CIMC - 6 - 43

" ;," I

5. Which of the followingsensors measures thetemperature of the air entering the engine forcombustion?

A. air charge sensor (ACS)B. exhaust gas recirculation (EGR)sensorC. knock sensorD. mass airflow (MAF)sensorE. throttle position sensor (TPS)

6. Which of the followingsensors reports engine speedand the position of the number one piston?

A. air change sensor (ACS)B. barometric pressure (BAP)sensorC. crankshaft position sensorD. throttle position sensor (TPS)E. vehicle speed sensor (VSS)

7. Which of the followingsensors monitors the oxygencontent of the exhaust gases?

A. air charge sensor (ACS)B. barometric pressure (BAP)sensorC. exhaust gas recirculation (EGR)sensorD. -mass airflow (MAF)sensorE. oxygen (02) sensor

8. Which of the followingsensors measures pressureinside the intake manifold?

A. crankshaft position sensorB. distributor reference sensorC. manifold absolute pressure (MAP)sensorD. oxygen (02) sensorE. vehicle speed sensor (VSS)

9. Which of the followingsensors reports how fast thevehicle is moving?

A. crankshaft position sensorB. exhaust gas recirculation (EGR)sensorC. mass airflow (MAF)sensorD. throttle position sensor (TPS)E. vehicle speed sensor (VSS)

May be photocopied for student use.

TEACHER MATERIALS - Engine Performance SpecialistWRITTEN TEST, CIMC ' 6 - 44

OBJECTIVE 3

10. Which of the followingsensors reports vibrations in theengine?

A. barometric pressure (BAP) sensorB. distributor reference sensorC. knock sensorD. manifold absolute pressure (MAP)sensorE. vehicle speed sensor (VSS)

11. Which of the following sensors reports engine speed(rpm)?

A. distributor reference sensorB. exhaust gas recirculation (EGR)sensorC. mass airflow (MAF)sensorD. throttle position sensor (TPS)E. vehicle speed sensor (VSS)

Match the names of common sensors to illustrations of thesensors. Choose the letter of the correct answer that identifiesthe given illustration.

12.

Copyright © General Motors Corp. Used with permission.

A. barometric pressure (BAP)sensorB. crankshaft position sensorC. exhaust gas recirculation (EGR)sensorD. manifold absolute pressure (MAP) sensorE. mass airflow (MAF)sensor

May be photocopied for student use.

TEACHER MATERIALS - Engine Performance SpecialistWRITTEN TEST - CIMC - 6 - 45

·.

13.

Used with permission of Ford Motor Co.

A. air charge sensor (ACS)B. camshaft position sensorC. crankshaft position sensorD. knock sensorE. oxygen (02) sensor

14.

Copyright © General Motors Corp. Used with permission.

A. coolant temperature sensor (CTS)B. knock sensorC. mass airflow (MAF)sensorD. oxygen (02) sensorE. throttle position sensor (TPS)

15.

Used with permission of Ford Motor Co.

A. coolant temperature sensor (CTS)B. knock sensorC. mass airflow (MAF)sensorD. oxygen (02) sensorE. throttle position sensor (TPS)

May be photocopied for student use.

TEACHER MATERIALS· Engine Performance SpecialistWRITTEN TEST· CIMC . 6 . 46

16.

Used with permission of Ford Motor Co.

A. crankshaft position sensorB. exhaust gas recirculation (EGR)sensorC. manifold absolute pressure (MAP)sensorD. throttle position sensor (TPS)E. vehicle speed sensor (VSS)

17.

Copyright © General Motors Corp. Used with permission.

A. camshaft position sensorB. crankshaft position sensorC. coolant temperature sensor (CTS)D. oxygen (02) sensorE. throttle position sensor (TPS)

May be photocopied for student use.

TEACHER MATERIALS - Engine Performance SpecialistWRITTEN TEST - CIMC - 6 - 47

-_OJ

18.

Used with permission of Ford Motor Coo

A. barometric pressure (BAP)sensorB. coolant temperature sensor (CTS)C. mass airflow (MAF)sensorD. oxygen (02) sensorE. throttle position sensor (TPS)

19.

A. barometric pressure (BAP)sensorB. camshaft position sensorC. exhaust gas recirculation (EGR)sensorD. manifold absolute pressure (MAP)sensorE. mass airflow (MAF)sensor

May be photocopied for student use.

TEACHER MATERIALS - Engine Performance SpecialistWRITTEN TEST - CIMC - 6 - 48

OBJECTIVE 4

20.

Used with permission of Ford Motor Co.

A. camshaft position sensorB. exhaust gas recirculation (EGR)sensorC. manifold absolute pressure (MAP)sensorD. throttle position sensor (TPS)E. vehicle speed sensor (VSS)

Match the names of common control devices to the enginefunctions they control.

21. Which of the following common control devices allows acontrolled amount of exhaust gas to return to theintake manifold, thereby reducing combustiontemperature and emissions?

A. carbon canister purge valveB. exhaust gas recirculation valveC. fuel injectorD. idle air control (lAC)valve

22. Which of the following common control devices adjustsspark timing?

A. electronic spark control (ESC)moduleB. exhaust gas recirculation valveC. fuel injectorD. idle air control (lAC)valve

May be photocopied for student use.

TEACHER MATERIALS - Engine Petiormance SpecialistWRITTEN TEST - CIMC - 6 - 49

OBJECTIVE 5

23. Which of the following common control devices adjustsairflow to increase engine idle speed?

A. engine cooling fanB. exhaust gas recirculation valveC. fuel injectorD. idle air control (IAC)valve

24. Which of the following common control devices releasesfuel vapors to the intake manifold when a richer air-fuel mixture is required?

A. carbon canister purge valveB. electronic spark control (ESe) moduleC. exhaust gas recirculation valveD. fuel injector

Match the names of common control devices to illustrationsof the devices. Choose the letter of the correct answer thatidentifies the given figure.

25.

A. engine cooling fanB. exhaust gas recirculation valveC. fuel injectorD. idle air control (lAC)valve

May be photocopied for student use.

TEACHER MATERIALS - Engine Periormance SpecialistWRITTEN TEST - CIMC - 6 - 50

26.

A. carbon canister purge valveB. electronic spark control (ESC)moduleC. exhaust gas recirculation valveD. fuel injector

27.

A. carbon canister purge valveB. exhaust gas recirculation valveC. fuel injectorD. idle air control (lAC)valve

May be photocopied for student use.

TEACHER MATERIALS - Engine Performance SpecialistWRITIEN TEST - CIMC - 6 - 51

OBJECTIVE 6

·f

.j..

;.....•··--1

28.

A. carbon canister purge valveB. exhaust gas recirculation valveC. idle air control (lAC)valveD. fuel injector

List information that can be monitored by an enginecomputer analyzer.

29. Which of the following is NOT information that can bemonitored by an engine computer analyzer?

A. electrical informationB. engine speedC. engine temperatureD. exhaust pressureE. fuel pressure

30. Which of the following is NOT information that can bemonitored by an engine computer analyzer?

A. engine vacuum available to engine vacuum-operateddevices

B. ignition system operationsC. makeup of engine exhaustD. makeup of fuelE. operating condition of the engine systems

May be photocopied for student use.

TEACHER MATERIALS - Engine Performance SpecialistWRIDEN TEST - CIMC - 6 - 52

OBJECTIVE 7

OBJECTIVE 8

Name the types of engine computer analyzers shown inillustrations.

Used with permission of DaimlerChrysler Corp.

31. True or False: The figure shown above is a referred toas an engine computer analyzer.

A. trueB. false

Compare and contrast the features of engine computeranalyzers and scan tools.

32. True or False: Engine computer analyzers usually havea single hookup.

A. trueB. false

33. True or False: Engine computer analyzers test a varietyof data and not only the engine computer.

A. trueB. false

34. True or False: Only scan tools are able to draw con-clusions from the data monitored (they have diagnosticcharts and test procedures stored in their memory).

A. trueB. false

May be photocopied for student use.

TEACHER MATERIALS - Engine Performance SpecialistWRITIEN TEST - CIMC - 6 - 53

OBJECTIVE 9

35. True or False: Both engine computer analyzers andscan tools can be updated with new software.

A. trueB. false

36. True or False: Only the engine computer analyzer ishandheld.

A. trueB. false

37. True or False: Scan tools are AC-powered.

A. trueB. false

38. True or False: Scan tools may cost considerably morethan engine computer analyzers.

A. trueB. false

39. True or False: Scan tools usually require a separateprinter to provide a paper printout.

A. trueB. false

40. True or False: Engine computer analyzers can only beused when test -driving the vehicle.

A. trueB. false

41. True or False: Both engine computer analyzers andscan tools contain a full screen of information.

A. trueB. false

Evaluated on Job Sheet 1.

May be photocopied for student use.

TEACHER MATERIALS - Engine Performance SpecialistWRITTEN TEST - CIMC - 6 - 54