Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Chapter 25, Problem 1MC
Which of the following statements about zirconium oxygen sensors is not true?
- The normal operating range for an O2S is between 0 and 1 volt.
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Which of the following is not a voltage-generating type sensor?
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A vehicle with a direct TPMS is brought into a shop with all sensors failing to read any pressure at all. Technician A says it’s likely that all 4 sensors died at once. Technician B says it may be due to a damaged or faulty TPMS antenna. Who is correct?
Technician A
Technician B
Both Technician A and B
Neither Technician A or B
Chapter 25 Solutions
Automotive Technology
Ch. 25 - OBD II systems use several modes of operation....Ch. 25 - List the four ways that individual components can...Ch. 25 - Prob. 3SACh. 25 - When an engine is running lean, the voltage signal...Ch. 25 - List six steps involved in performing a visual...Ch. 25 - Many control systems have operating modes that can...Ch. 25 - True or False? A bad ground can cause an increase...Ch. 25 - True or False? An A/F ratio sensor can be tested...Ch. 25 - Which of the following statements about zirconium...Ch. 25 - A system may fail the catalyst monitor test for...
Ch. 25 - A defective LAT sensor or circuit may cause the...Ch. 25 - Which of the following is the least likely cause...Ch. 25 - Technician A says that an oxygen sensor can be a...Ch. 25 - Prob. 2ASRQCh. 25 - While discussing ECT sensor diagnosis: Technician...Ch. 25 - While discussing Hall-effect vehicle speed sensor...Ch. 25 - While discussing TP sensor diagnosis: Technician A...Ch. 25 - While diagnosing the cause of a hard starting...Ch. 25 - While discussing testing OBD II system components:...Ch. 25 - When testing a frequency varying MAF: Technician A...Ch. 25 - Technician A says that a faulty MAF sensor can...Ch. 25 - While discussing the MIL on OBD 11 systems:...
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- When an engine is running lean, the voltage signal from the oxygen sensor will be (low or high).arrow_forwardWhen testing an engine temperature sensor: Technician A uses an ohmmeter to test the thermistor. Technician B says that the thermistor reacts to pressure and applies air pressure to the backside of the sensor. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardWhen testing a frequency varying MAF: Technician A says that the frequency should increase with an increase in engine speed. Technician B says that when observed on a lab scope, the signal from the sensor should be a square wave. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forward
- Technician A says that some types of voltage sensors provide input to the computer by modifying or controlling a constant, predetermined voltage signal. Technician B says that a coolant temperature sensor is a voltage-generating sensor. Who is correct?arrow_forwardWhile discussing TP sensor diagnosis: Technician A says that a four-wire TP sensor contains an idle switch. Technician B says that in some applications, the TP sensor mounting bolts may be loosened and the TP sensor housing rotated to adjust the voltage signal with the throttle in the idle position. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardA typical normal oxygen sensor signal will toggle between and volts.arrow_forward
- While discussing Hall-effect vehicle speed sensor tests: Technician A says to use an ohmmeter to test the resistance of the coil. Technician B says that the voltage generated by the sensor can be measured by connecting a voltmeter across the sensors terminals. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardWhile discussing airflow sensors: Technician A says that with mass airflow and volume airflow sensor systems, if any air bypasses the sensors, the engine will run lean. Technician B says that vacuum leaks in a speed density system will decrease injector pulse width. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forwardA TPMS sensor is being replaced. Technician A says that if you replace it with a manufacturer specific TPMS, you need to program the sensor before install. Technician B says that all manufacture specific TPMS sensors use a 315 MHz radio frequency. Who is correct? Technician A Technician B Both Technician A and B Neither Technician A or Barrow_forward
- Please solve all four partarrow_forwardExplain the working of NDIR and chemical sensors of exhaust gas analyzersarrow_forwardECU collects and processes signals from O various engine sensors. controls the fuel level in the fuel tank. O O controls the engine lubrication. O controls the engine oil level. O controls the coolant in the engine.arrow_forward
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