Question 1

What should you look for when checking connectors for damage?

Accepted Answer

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Question 2

Explain the different types of wheel speed sensor signals.

Accepted Answer

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Question 3

List the features of the DBC-7 system.

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Question 4

If the computer recognizes a condition that is not correct, it records a:

Accepted Answer

When the computer recognizes a condition that is not correct, it records a diagnostic trouble code (DTC) which helps identify the problem and eventually fix it. Soft codes are temporary and disappear once the issue is resolved, history codes indicate that there was a problem in the past but it has been fixed, and continuous memory codes are stored in the computer's memory even after the vehicle has been turned off. However, only diagnostic trouble codes are specifically recorded when the computer detects a fault or issue.

Question 5

Technician A says t he DBC-7 uses dynamic rear proportioning (DRP)to control rear brake pressure during normal braking . Technician B says t he DBC-7 has two possible traction control systems: enhanced traction system  (ETS)and TCS . Who is correct?

Accepted Answer

Technician A is correct that the DBC-7 uses dynamic rear proportioning (DRP) to control rear brake pressure during normal braking. 
Technician B is correct that the DBC-7 has two possible traction control systems: enhanced traction system (ETS) and TCS. Therefore, both statements are correct.

Question 6

Wheel speed sensor failures on newer vehicles are being discussed. Technician A says a code is usually set when a sensor has an erratic signal. Technician B says a code is usually set when a sensor is open. Who is correct?

Accepted Answer

Both Technician A and Technician B are correct. A code can be set when a wheel speed sensor has an erratic signal, indicating an issue with the sensor's performance, and also when a sensor is open, indicating a complete failure or disconnection of the sensor.

Question 7

Which of the following is a leading trigger to turn on ABS warning lamps?

Accepted Answer

Dirty or damaged wheel speed sensors can cause incorrect readings and trigger the ABS warning lamp to turn on. Dirty or contaminated fluid, a defective controller, or a defective hydraulic module may cause other issues with the ABS system, but are less likely to be the primary trigger for the warning lamp.

Question 8

Define history codes.

Accepted Answer

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Question 9

Explain the difference between an integrated and a nonintegrated ABS system.

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Question 10

List five features of the Continental Teves Mk60/Mk70 system.

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Question 11

What does the acronym CAB stand for?

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Question 12

Depressurizing accumulators is being discussed. Technician A says some systems are bled without depressurizing. Technician B says some systems must be depressurized before checking the fluid level. Who is correct?

Accepted Answer

Both technicians are correct. Some hydraulic systems can be bled without first depressurizing the system, while some systems must be depressurized before checking fluid levels to avoid injury or damage to the components.

Question 13

Define reluctor.

Accepted Answer

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Question 14

Delphi DBC-7 systems are used almost exclusively on ____ vehicles.

Accepted Answer

Delphi DBC-7 systems are primarily used by General Motors vehicles.

Question 15

Diagnosing an integral ABS system is being discussed . Technician A says some integral ABS systems have a high pressure accumulator. Technician B says some integral ABS systems use high pressure power steering fluid for brake assist . Who is correct?

Accepted Answer

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Question 16

ABS system bleeding is being discussed. Technician A says a scan tool must be used to bleed some ABS. Technician B says the base brakes and the ABS must be bled together. Who is correct?

Accepted Answer

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Question 17

Technician A says bleeding an ABS is fundamentally the same as bleeding a non-ABS hydraulic system. Technician B says some variety exists in extra steps that may be required for different systems. Who is correct?

Accepted Answer

Technician A is correct that bleeding an ABS system is fundamentally the same as bleeding a non-ABS hydraulic system. However, Technician B is also correct that some additional steps may be required for different ABS systems. Therefore, both technicians are correct.

Question 18

Outline the basic steps the technician should take to troubleshoot intermittent problems.

Accepted Answer

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Question 19

Describe the operation of a magneto-resistive wheel speed sensor.

Accepted Answer

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Question 20

What is a symptom byte?

Accepted Answer

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Quiz 10: Electrical Braking Systems