WorksheetsOBDII
Total questions: 22
Worksheet time: 11mins
The MIL is turned off under any of the following conditions, EXCEPT _______.
-Codes are cleared with a scan tool
-Power to the PCM is disconnected
-Vehicle is driven on 3 consecutive trips with a warm-up cycle, without detecting a fault
-PCM diagnostic link is grounded
Codes are cleared with a scan tool
Power to the PCM is disconnected
Vehicle is driven on 3 consecutive trips with a warm-up cycle, without detecting a fault
PCM diagnostic link is grounded
A U type DTC indicates a problem with ________.
-Powertrain
-Body and accessories
-Communication related systems
-Suspension system
Powertrain
Body and accessories
Communication related systems
Suspension system
A freeze frame is generated on an OBD-II vehicle ________.
-When a type C or D diagnostic trouble code is set
-When a type A or B diagnostic trouble code is set
-Every other trip
-When the PCM detects a problem with the O2S
When a type C or D diagnostic trouble code is set
When a type A or B diagnostic trouble code is set
Every other trip
When the PCM detects a problem with the O2S
A pending code is set when a fault is detected on ________.
-A one-trip fault item
-The first fault of a two-trip failure
-The catalytic converter efficiency test
-A thermostat problem (too long to closed-loop status)
A one-trip fault item
The first fault of a two-trip failure
The catalytic converter efficiency test
A thermostat problem (too long to closed-loop status)
A type C DTC will light the MIL.
-True
-False
True
False
An element of the OBD II diagnostic management system which stores engine data during a DTC set is called ________.
-Misfire
-Vehicle in vehicle out
-Freeze frame
-Memory account
Misfire
Vehicle in vehicle out
Freeze frame
Memory account
An ignition misfire or fuel mixture problem is an example of what type of DTC?
-Type A
-Type B
-Type C
-Type D
Type A
Type B
Type C
Type D
By looking at the way diagnostic trouble codes are formatted, which DTC could indicate that the gas cap is loose or defective?
-P0221
-P1301
-P0442
-P1603
P0221
P1301
P0442
P1603
DTC P0302 is a ________.
-Generic DTC
-Vehicle manufacturer-specific DTC
-Idle speed-related DTC
-Transmission/transaxle-related DTC
Generic DTC
Vehicle manufacturer-specific DTC
Idle speed-related DTC
Transmission/Transaxle related-DTC
Global (generic) OBD II contains some data in what format?
-Plain English
-Hexadecimal
-Roman numerals
-All of the above
Plain English
Hexadecimal
Roman numerals
All of the above
In an OBD II system, when all enabling criteria for a given diagnostic is met, it's considered which of these terms?
-A freeze frame
-A trip
-A warmed-up engine
-A tuned engine
A freeze frame
A trip
A warmed-up engine
A tuned engine
OBD II has been on all passenger vehicles in the United States since ________.
-1986
-1991
-1996
-2000
1986
1991
1996
2000
On-board diagnostic (OBD) systems I and II are being discussed. Technician A says that only OBD II systems require misfire detection. Technician B says that OBD I was capable of detecting exhaust emission control system failures. Who is right?
Tech A
Tech B
Both Tech’s A and B
Neither Tech
Setting a type B DTC will also trigger a freeze frame.
-True
-False
True
False
Technician A says that OBD-II includes generic as well as vehicle manufacturer's specific DTCs and data displays. Technician B says that OBD-II have common DTCs. Who is right?
Tech A
Tech B
Both Tech’s A and B
Neither Tech
Technician A says that warm up cycles are used to erase DTCs and freeze frame data. Technician B says that OBD II requires the diagnostic system to monitor all emission-related components and systems. Who is right?
Tech A
Tech B
Both Tech’s A and B
Neither Tech
Technician A says that when the MIL is on, the technician should retrieve the DTC and follow the manufacturer's recommended procedure to find the root cause of the problem. Technician B says that all OBD II monitors must have the enable criteria achieved before a test is performed. Who is right?
Tech A
Tech B
Both Tech’s A and B
Neither Tech
The comprehensive component monitor checks computer controlled devices for ________.
-Opens
-Rationality
-Functionality
-All of the above
Opens
Rationality
Functionality
All of the above
The computer will automatically clear a DTC if there are no additional detected faults after ________.
-Forty consecutive warm-up cycles
-Forty-five warm-up cycles
-One consecutive trip
-Five key-on/key-off cycles
Forty consecutive warm-up cycles
Forty-five warm-up cycles
One consecutive trip
Five key on/ key off cycles
Which of these is a continuous monitor?
-Fuel system monitor
-EGR monitor
-Oxygen sensor monitor
-Catalyst monitor
Fuel system monitor
EGR monitor
Oxygen sensor monitor
Catalyst monitor
Which of these is checked during an OBD II PCM initiated functionality test?
-ECT
-O2 sensor
-Transmission shift solenoids
-Brake switch
ECT
O2 sensor
Transmission shift solenoids
Brake switch
Which organization developed guidelines for OBD II?
-EPA
-CARB
-DOT and EPA
-EPA and CARB
EPA
CARB
DOT and EPA
EPA and CARB
