Computerized Engine Controls



1.	ECT and IAT sensors should be checked when the engine is at normal operating temperature.
	A.	True.
	B.	False.

2.	When testing ECT and IAT sensors, how should they read on the scan tool?
	A.	Both sensors should read about the same.
	B.	The ECT sensor should read higher than the IAT sensor.
	C.	The ECT sensor should read lower than the IAT sensor.
	D.	None of the above.

3.	What is the greatest risk of standing near a detonating engine?
	A.	Fire.
	B.	Smoke.
	C.	Noise.
	D.	Parts breaking loose.

4.	Which of the following is used to prevent voltage spikes within relays controlled by modules?
	A.	A diode.
	B.	A resistor.
	C.	Both a and b.
	D.	Neither a nor b.

5.	If ignition timing doesn’t respond to changes in engine load, the powertrain control module (PCM) may be in:
	A.	ECM mode.
	B.	DTC mode.
	C.	MIL mode.
	D.	LOS mode.

6.	What safety equipment should be worn when servicing the PCM?
	A.	Grounding strap.
	B.	Bump hat.
	C.	Leather apron.
	D.	Ear plugs.

7.	Which of the following may cause a “NO DATA:” message on a scanner?
	A.	Wrong VIN information.
	B.	Incorrect software.
	C.	Bad DLC connection.
	D.	All of the above.

8.	Generic scanners can be used on all vehicle makes and models without individualized configuration.
	A.	True.
	B.	False.

9.	What kind of code will be stored in the PCM by running the engine with a sensor disconnected?
	A.	Soft code.
	B.	Hard code.
	C.	Neutral code.
	D.	All codes.

10.	What is the danger of working with oxygen sensors?
	A.	Asphyxiation.
	B.	Electrical shock.
	C.	Burns.
	D.	None of the above.

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