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Exam 10: Electrical Braking Systems

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Question 31

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What is a symptom byte?

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A symptom byte is an addition ...

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Question 32

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What does the acronym CAB stand for?

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Controller...

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Question 33

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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?

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?

The ____________________ replaces the standard hydraulic proportioning valve found on many older vehicles .

RWAL/RABS systems are being discussed. Technician A says the system uses four-wheel speed sensors. Technician B says the system essentially controls wheel skid on the rear wheels. Who is correct?

___________ is the number of times a cycle occurs within one second.

Diagnosing a DBC-7 system is being discussed. Technician A says that the system must be depressurized before retrieving DTCs. Technician B says that thoroughly inspecting the vehicle and speed sensor harness is one of the first steps in proper diagnosis. Who is correct?

All Delphi DBC-7 systems are four-channel systems.

Some ABS accumulators have 2,600 psi of hydraulic pressure in the system whenever the ignition switch is on.

____________________are normally used to change electrical energy into mechanical action .

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

Define history codes.

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

Technician A says the first step in road testing for an ABS problem is to check the red brake warning light. Technician B says if the red lamp is lit, the brakes may not be operating properly. Who is correct?

Technician A says active brakes can warn the driver of an impending crash. Technician B says active brakes do not actually apply the brakes if necessary to avoid a crash. Who is correct?

All DTCs will cause the ABS warning lamp to illuminate.

Class __________ wiring is used within the DBC-7 system for shared communications between networked controllers .

Most ABS will only allow partial operation of the service brakes if the ABS has a fault.

Technician A says the antilock controller or microprocessor is the computer for the ABS. Technician B says m ost automotive computers, including the EBCM, are programmed with an adaptive memory capability or learning mode . Who is correct?