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A 15 OBD II Flashcards | StudBud
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A 15 OBD II
A 15 OBD II
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Questions
25
Answers
1
The second number in an OBD-II DTC indicates the
Specific fault designation.
System that is affected.
Generic or SAE code.
Nonuniform code.
2
Some manufacturers may refer to freeze-frame data as PIDs.
False
True
3
Which of the following is not a group of code designators?
Network codes
Powertrain codes
Body codes
Battery codes
4
Which of the following is not true of OBD-II systems?
They monitor fuel trim adjustment.
They use active tests to set codes.
Their data link connectors vary by manufacturer.
They check inputs from the Mass Air Flow (MAF) sensor.
5
Period when the engine temperature rises at least 40 degrees and rises to at least 160 degrees.
DLC
Drive Cycle
Warm-up period
Diagnostic Monitoring
6
To automatically clear the DTC there must be 40 engine warm-up cycles without the fault reoccurring.
True
False
7
The Society of Automotive Engineers has
Allowed manufacturers to use their own data link connectors.
Agreed to monitor emission related systems and components.
Recommended a return to OBD-I systems.
Standardized terms, acronyms, and abbreviations.
8
Specific driving conditions that must be present before a diagnostic monitor can be run.
Warm-up period
DLC
Passive Test
Enabling Criteria
9
In OBD-II DTCs, if the first number following the letter code is 0, it indicates a manufacturer-specific code.
False
True
10
An active test forces a component to function in a specific way.
True
False
11
Checks the performance of a vehicle system or component during normal operation.
Passive Test
Break Out Box (BOB)
Diagnostic Executive
Enabling Criteria
12
The last two numbers in an OBD-II DTC refers to the
Manufacturer-specific code.
Generic or SAE code.
The system that is affected.
Specific fault designation.
13
Common DTC codes are uniform throughout the automotive industry.
Enabling Criteria
Freeze-Frame Data
Generic DTCs
Diagnostic Monitoring
14
A set of driving conditions that “run” an on-board diagnostic or monitor.
Drive Cycle
DLC
Warm-up period
Diagnostic Monitoring
15
Engine performance DTCs are found within the network codes designated as “U”.
False
True
16
Serial data values that are stored the instant an emission-related DTC is set.
Passive Test
Drive Cycle
Freeze-Frame Data
Enabling Criteria
17
Device used before scan tools to diagnose computer-controlled systems.
Break Out Box (BOB)
Diagnostic Monitoring
Freeze-Frame Data
Diagnostic Executive
18
The data link connector (DLC) for OBD-II is a standardized 16-pin connector.
False
True
19
OBD-II DTCs are accessed by connecting a scanner to the DLC.
True
False
20
A procedure used by the PCM to test relevant on-board systems.
Freeze-Frame Data
Generic DTCs
Enabling Criteria
Diagnostic Monitoring
21
Typically, failure records may store up to five DTCs in the diagnostic memory.
False
True
22
OBD-II systems test all emission-related problems on light-duty gas powered vehicles manufactured after 1995.
False
True
23
A key-on, run, key-off cycle in which all of the enabling criteria for a given diagnostic monitor are met.
DLC
Passive Test
Trip Cycle
Enabling Criteria
24
The standardized connector used to plug in a scan tool on an OBD II system.
Enabling Criteria
Freeze-Frame Data
Passive Test
DLC
25
The diagnostic strategy used for OBD-II is often the same as that used for OBD-I.
True
False
