Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Textbook Question
Chapter 24, Problem 9ASRQ
While discussing PCM monitor tests: Technician A says that the monitor tests are prioritized. Technician B says that the monitor tests are run when the scan tool activates them. Who is correct?
- Technician A
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Chapter 24 Solutions
Automotive Technology
Ch. 24 - Describe the difference between an open- and a...Ch. 24 - Explain the use and importance of system strategy...Ch. 24 - Describe an OBD II warm-up cycle.Ch. 24 - Explain the trip and drive cycle in an OBD II...Ch. 24 - Describe how engine misfire is detected in an OBD...Ch. 24 - Describe the purpose of having both upstream and...Ch. 24 - Briefly describe the monitors in an OBD II system.Ch. 24 - Type B engine misfires are excessive if the...Ch. 24 - The monitor system checks the action of the can...Ch. 24 - The monitor system has a(n) and test to check the...
Ch. 24 - The fuel monitor checks fuel trim and fuel trim.Ch. 24 - Which sensor is used for misfire monitoring on OBD...Ch. 24 - Which of the following statements is not true?...Ch. 24 - A computer is capable of doing all of the...Ch. 24 - Which of the following memory circuits is used to...Ch. 24 - Technician A says that the oxygen sensor provides...Ch. 24 - While discussing OBD II systems: Technician A says...Ch. 24 - While discussing the catalyst efficiency monitor:...Ch. 24 - While discussing monitoring systems: Technician A...Ch. 24 - While discussing the comprehensive monitoring...Ch. 24 - Prob. 6ASRQCh. 24 - While discussing diagnostic procedures: Technician...Ch. 24 - Technician A says that the enable criteria are the...Ch. 24 - While discussing PCM monitor tests: Technician A...Ch. 24 - While discussing the misfire monitor: Technician A...
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- While discussing diagnostic procedures: Technician A says that after the visual inspection has been performed, the DTCs should be cleared from the memory of the PCM. Technician B says that serial data can be helpful when there are no DTCs but there is a fault in the system. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardWhile discussing the comprehensive monitoring system: Technician A says that it tests various input circuits. Technician B says that it tests various output circuits. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardTrue or False? A bad ground can cause an increase in the reference voltage to a sensor.arrow_forward
- 9. Technician A says that navigational systems rely on global positioning satellites. Technician B says that navigational systems rely on information programmed in its memory and information stored on a CD or DVD. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardTrue or False? The MIN/MAX function on some DMMs can be used to check for electrical noise.arrow_forwardTechnician A says that EMI can affect sensor signals. Technician B says that EMI can cause intermittent driveability problems. Who is correct? Select one: a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forward
- Which of the following is not a type of information stored in ROM? Strategy Look-up tables Sensor input None of the abovearrow_forwardWhat does "calibrating an instrument" mean?arrow_forwardTrue or False? In a high-speed CAN system, a serial data bus is used to allow communication between the various control modules in a vehicle.arrow_forward
- Technician A uses a testlight to test circuit protection devices. Technician B uses a voltmeter to test circuit protection devices. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardWhich of the following will be used by a contact type sensor ? a. Ultrasonic Sound Wave b. Dial Gauge c. Magnetic field d. Laser Beamarrow_forwardA customer comes in with an indirect TPMS, complaining that despite all the tires running low on pressure, the TPMS light never came on. Technician A says it’s likely due to a faulty module. Technician B says it may just be normal operation of an indirect TPMS. Who is correct? Technician A Technician B Both Technician A and B Neither Technician A or Barrow_forward
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