Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Chapter 22, Problem 8ASRQ
To determine
Whether Technician A or Technician B is correct.
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Name
Section 5-2: Line Diagrams-Signals,
Decisions, and Actions
In the following application, a temperature switch controls a heating contactor and a flow switch is used to
ensure there is enough air flow. If there is not enough air flow, an alarm is sounded. Complete the required
information.
1. List all the signal devices in the circuit.
2. List all the action devices in the circuit.
3. List the decision part of the circuit that automatically sounds the alarm if there is a problem.
4. When the heating element is on during normal operation, is the flow switch open or closed?
CIRCULATING
2
L1
FAN
TEMPERATURE
SWITCH
TR
HEATING
ELEMENTS
FLOW
SWITCH
-HOT AIR
PADDLE
AIR FILTER
NORMALLY CLOSED
FLOW SWITCH
65
ALARM
(SOUNDS IF NO FLOW FOR
15 SECONDS OR MORE)
Date
HEATING
CONTACTOR
TR
ON-DELAY
TIMER
SUPPLY AIR
COLD AIR
(3) TIME SET= 15 SEC
© 2014 American Technical Publishers, Inc.
All rights reserved
hile discussing NTC thermistors; Technician A says that some systems use this type of thermistor as a protection device. Technician B says that when there is high current in a circuit, the resistance of the thermistor increases and causes a decrease in current flow. Who is correct?
Chapter 22 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 22 - Explain the three types of memory used in the...Ch. 22 - Signals resemble a square pattern.Ch. 22 - Signals can have varying voltage levels.Ch. 22 - Means that data concerning the effects of the...Ch. 22 - The type of memory' that contains specific...Ch. 22 - A is the simplest type of semiconductor.Ch. 22 - Prob. 7RQCh. 22 - Prob. 8RQCh. 22 - How should vou test a diode with a multimeter?Ch. 22 - What is the major difference between ROM and RAM...
Ch. 22 - Which of the following is not a type of...Ch. 22 - True or False? In a high-speed CAN system, a...Ch. 22 - Which of the following is not made of...Ch. 22 - Which of the following is a basic function of a...Ch. 22 - What is the name of the module that allows the...Ch. 22 - Prob. 1ASRQCh. 22 - While checking an A/C compressor clutch coil...Ch. 22 - Technician A says that some types of voltage...Ch. 22 - Technician A says that multiplexing is a way to...Ch. 22 - Technician A says that when a diode is placed in a...Ch. 22 - Prob. 6ASRQCh. 22 - While discussing multiplex system protocols:...Ch. 22 - Prob. 8ASRQCh. 22 - While diagnosing an electronic control system:...Ch. 22 - Technician A says that based on current...
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