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OBDII

Total questions: 22

Worksheet time: 11mins

Name
Class
Date
1.

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

a)

Codes are cleared with a scan tool

b)

Power to the PCM is disconnected

c)

Vehicle is driven on 3 consecutive trips with a warm-up cycle, without detecting a fault

d)

PCM diagnostic link is grounded

2.

A U type DTC indicates a problem with ________.

-Powertrain

-Body and accessories

-Communication related systems

-Suspension system

a)

Powertrain

b)

Body and accessories

c)

Communication related systems

d)

Suspension system

3.

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

a)

When a type C or D diagnostic trouble code is set

b)

When a type A or B diagnostic trouble code is set

c)

Every other trip

d)

When the PCM detects a problem with the O2S

4.

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)

A one-trip fault item

b)

The first fault of a two-trip failure

c)

The catalytic converter efficiency test

d)

A thermostat problem (too long to closed-loop status)

5.

A type C DTC will light the MIL.

-True

-False

a)

True

b)

False

6.

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

a)

Misfire

b)

Vehicle in vehicle out

c)

Freeze frame

d)

Memory account

7.

An ignition misfire or fuel mixture problem is an example of what type of DTC?

-Type A

-Type B

-Type C

-Type D

a)

Type A

b)

Type B

c)

Type C

d)

Type D

8.

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

a)

P0221

b)

P1301

c)

P0442

d)

P1603

9.

DTC P0302 is a ________.

-Generic DTC

-Vehicle manufacturer-specific DTC

-Idle speed-related DTC

-Transmission/transaxle-related DTC

a)

Generic DTC

b)

Vehicle manufacturer-specific DTC

c)

Idle speed-related DTC

d)

Transmission/Transaxle related-DTC

10.

Global (generic) OBD II contains some data in what format?

-Plain English

-Hexadecimal

-Roman numerals

-All of the above

a)

Plain English

b)

Hexadecimal

c)

Roman numerals

d)

All of the above

11.

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)

A freeze frame

b)

A trip

c)

A warmed-up engine

d)

A tuned engine

12.

OBD II has been on all passenger vehicles in the United States since ________.

-1986

-1991

-1996

-2000

a)

1986

b)

1991

c)

1996

d)

2000

13.

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?

a)

Tech A

b)

Tech B

c)

Both Tech’s A and B

d)

Neither Tech

14.

Setting a type B DTC will also trigger a freeze frame.

-True

-False

a)

True

b)

False

15.

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?

a)

Tech A

b)

Tech B

c)

Both Tech’s A and B

d)

Neither Tech

16.

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?

a)

Tech A

b)

Tech B

c)

Both Tech’s A and B

d)

Neither Tech

17.

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?

a)

Tech A

b)

Tech B

c)

Both Tech’s A and B

d)

Neither Tech

18.

The comprehensive component monitor checks computer controlled devices for ________.

-Opens

-Rationality

-Functionality

-All of the above

a)

Opens

b)

Rationality

c)

Functionality

d)

All of the above

19.

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

a)

Forty consecutive warm-up cycles

b)

Forty-five warm-up cycles

c)

One consecutive trip

d)

Five key on/ key off cycles

20.

Which of these is a continuous monitor?

-Fuel system monitor

-EGR monitor

-Oxygen sensor monitor

-Catalyst monitor

a)

Fuel system monitor

b)

EGR monitor

c)

Oxygen sensor monitor

d)

Catalyst monitor

21.

Which of these is checked during an OBD II PCM initiated functionality test?

-ECT

-O2 sensor

-Transmission shift solenoids

-Brake switch

a)

ECT

b)

O2 sensor

c)

Transmission shift solenoids

d)

Brake switch

22.

Which organization developed guidelines for OBD II?

-EPA

-CARB

-DOT and EPA

-EPA and CARB

a)

EPA

b)

CARB

c)

DOT and EPA

d)

EPA and CARB