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Exam 3: History of on Board Diagnostics Obd

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Question 1

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Technician A says that the DLC may be located under the hood on an OBD II vehicle. Technician B says that the DLC may be located anywhere that the manufacturer chooses on an OBD II vehicle. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

E) A) and B)
F) A) and C)

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Question 2

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OBD II provides a universal OBD 16-pin DLC for all vehicles manufactured for the U.S. market since 1996.

A) True
B) False

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Question 3

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ODB II DLC has dedicated pin assignments and location based on SAE standard J1962.

On an OBD II scan tool, what is Mode 6, and what does it display?

What is Mode 2 is referred to as?

What were major shortfalls of the first-generation OBD systems regarding terminology and trouble code identification?

Technician A says not all manufacturers provide freeze frame data.Technician B says one of the mandated features of OBD II is the inclusion of freeze frame data. Who is correct?

A generic OBD II diagnostic scan tool cannot access DTCs on all OBD II vehicles.

The SAE set forth what method to identify DTCs in an OBD II system?

What conditions must be present for an OBD II system to illuminate the malfunction indicator light for a component problem?

OBD II provides a universal OBD 16-pin DLC for all manufacturers' vehicles since 1990.

When a DTC is set, the PCM also stores the operating parameters of the emission control system at the time of the event in a data program called:

What is an OBD II warm-up cycle, and how is it defined?

OBD II regulations require vehicle manufacturers to use the same terms for the same type of components on all manufacturers' vehicles.

What does Mode 7 allow a scan tool to request?

OBD II was mandated by the Federal Environmental Protection Agency to be installed on all passenger vehicles beginning with what model year?

What conditions are required in order for the MIL be turned off on an OBD II vehicle?

What is the Federal Test Procedure (FTP) and what is it intended to simulate?

Technician A says that all P1XXX DTCs are for manufacturers' specific diagnostic trouble codes. Technician B says that all P0XXX DTCs are for generic diagnostic trouble codes. Who is correct?

The Clean Air Act of 1990 required that vehicles sold in the United States be equipped with what feature?