Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Textbook Question
Chapter 25, Problem 2TF
True or False? An A/F ratio sensor can be tested in the same way as an oxygen sensor.
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Which of the following is not a voltage-generating type sensor?
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Because modern engines heat up rapidly heated oxygen sensor (ho2s) are not required.
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Q 151. the activity of an O2 sensor is best monitered with a ______ .
a. scan tool
b. logic probe
c. noid light
d. lab scope
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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- Which of the following is the most likely cause of a lean condition during acceleration and cruising speeds? a. A defective oxygen sensor b. A defective PCM c. A defective ECT sensor d. A defective MAF sensorarrow_forwardWhich of the following is a likely cause of a lean condition during acceleration and cruising speeds? a. A defective oxygen sensor b. A defective PCM c. A defective ECT sensor d. A defective MAF sensorarrow_forwardWhen an engine is running lean, the voltage signal from the oxygen sensor will be (low or high).arrow_forward
- When 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_forwardWhat is the correct procedure for checking an oxygen sensor with a DMM?arrow_forwardTrue or False? The signals from an air-fuel ratio sensor are identical to those from a conventional oxygen sensor.arrow_forward
- A CKP sensor can be checked with all of the following except a(n). a. logic probe b. voltmeter c. ammeter d. lab scopearrow_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_forwardWhich of the following given sensor is self generating type transducer? a) Strain gauge b) Thermocouple c) Thermistor d) RTDarrow_forward
- True or False? A bad ground can cause an increase in the reference voltage to a sensor.arrow_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_forwardA defective LAT sensor or circuit may cause the fol lowing problems, except. hard engine starting rich or lean air-fuel ratio improper converter clutch lockup reduced fuel economyarrow_forward
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