Chapter 11 Diagnosis and Repair of Electronic Circuits

Chapter 11 Diagnosis and Repair of Electronic Circuits 5th Edition by Sean Bennett

Answers to Review Questions for Diesel Mechanic Trade Schools

When the ammeter function of a digital multimeter is used to measure current in a circuit, which of the following should be true?
All current measured passes through the DMM
 
Which of the following ESTs can be used to access diagnostic codes?
(flash codes, PC, ProLink9000)
All of the above
 
When using a DMM to measure voltage, what would happen is you placed the negative terminal on the more positive section of a circuit?
Display reading would be preceded by a MINUS symbol
 
What color DMM test lead is normally inserted into the input socket identified as “COM”?
Black
 
When measuring circuit resistance with a DMM, what will the ohmmeter display when you place the test leads across an open portion of the circuit?
 
OL
 
What is indicated when a DMM shows continuity in both directions when testing a diode?
Diode is shorted
 
Tech A says that when using DMM probes should be inserted through the rubber insulator of weatherproof connectors. Tech B says that the correct method of connecting a DMM into an active electronic circuit is to use a breakout box or Tee. who is correct?
Tech B
 
Tech A says that a truck chassis data bus can be assessed using a 6-pin data connector. Tech B says that a truck chassis data bus can be assessed using a 9-pin data connector. Who is correct?
Both
 
Which of the following could be referred to as the “brain” of the processing cycle in a computer system?
Central processing unit (CPU)CPU
 
On a standard desktop PC, which of the following would be know as an input device?
Mouse
 
On a standard desktop PC, which of the following would be known as an output device?
Monitor
 
in a troubleshooting diagnostic tree, what is at the root of the tree?
The problem
 
What is the reason fore wearing a ground strap when working with a stationary and mobile computer systems?
Minimize circuit damage from electrostatic discharge
 
What must be used to disassemble most weatherproof connector terminals from the connector block?
Tang release tool 
 
Correct means of electronically coupling a ProLink9000 with a truck chassis ECM?
ATA connector
 
DMM test lead resistance should never exceed
1.0 Ohm
 
The output signal of a pulse generator rotational speed sensor is measured in
Volts-DC