Bundle: Automotive Technology: A Systems Approach, 6th + Online ASE Technician Test Preparation -Automotive Bi-Lingual Series (A6 - Electricity & ... Preparation -Automotive Bi-Lingual Series (A1
6th Edition
ISBN: 9781337217767
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 31, Problem 15RQ
True or False? The signals from an air-fuel ratio sensor are identical to those from a conventional oxygen sensor.
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4- Measure the voltage of the sensor lines.
5- In the event of a malfunction in the incoming air temperature sensor, what is its
effect on the operation of the electronic fuel system?
On an engine management syste with feedback control from an oxygen sensor why may a missing engine thermostat prevent closed loop operation
Because modern engines heat up rapidly heated oxygen sensor (ho2s) are not required.
True
False
Chapter 31 Solutions
Bundle: Automotive Technology: A Systems Approach, 6th + Online ASE Technician Test Preparation -Automotive Bi-Lingual Series (A6 - Electricity & ... Preparation -Automotive Bi-Lingual Series (A1
Ch. 31 - List four service precautions for working on the...Ch. 31 - What is indicated by a LTFT reading of 24 percent?Ch. 31 - What is the correct procedure for checking an...Ch. 31 - What is the difference between STFT and LTFT?Ch. 31 - The PCM checks for a closed throttle plate each...Ch. 31 - Which of the following is a likely cause of a lean...Ch. 31 - What problem may result from dirt buildup on an...Ch. 31 - Which of the following would not cause a...Ch. 31 - What is the correct way to test an injector with...Ch. 31 - What is the difference between the pulse width and...
Ch. 31 - How can you use a dual trace scope to make sure...Ch. 31 - What are three possible problems that can allow...Ch. 31 - What is the purpose of having two accelerator...Ch. 31 - What is indicated by a negative LTFT value?Ch. 31 - True or False? The signals from an air-fuel ratio...Ch. 31 - While discussing the causes of...Ch. 31 - While discussing IAC valve diagnosis: Technician A...Ch. 31 - While discussing IAC motor removal, service, and...Ch. 31 - While discussing injector testing: Technician A...Ch. 31 - While discussing airflow sensors: Technician A...Ch. 31 - While discussing scan tool diagnosis of fuel...Ch. 31 - While discussing a high idle speed problem:...Ch. 31 - While discussing the causes of a rich air-fuel...Ch. 31 - While diagnosing an idle speed problem: Technician...Ch. 31 - While looking at fuel trim values: Technician A...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- When an engine is running lean, the voltage signal from the oxygen sensor will be (low or high).arrow_forwardWhich 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_forwardTechnician A says that the oxygen sensor provides the major input during the open-loop mode. Technician B says that the coolant temperature sensor input is not used during open-loop mode operation. Who is correct?arrow_forward
- Technician A says that the oxygen sensor provides the major input during the open-loop mode.technician B says that the coolant temperature sensor input is not used during open loop mode operation. Who is correct?arrow_forwardTechnician A says that many oil pressure sensors are typically variable resistors that change resistance based on pressure changes. Technician B says that a sensor substitution box can be used in place of the sensor while observing the reaction of the oil pressure gauge on the dash. Who is correct? Select one: a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forwardWhat is the correct procedure for checking an oxygen sensor with a DMM?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_forwardWhich of the following is the least likely cause of a no-start condition? Faulty CKP sensor Faulty KS Fuel or ignition system faults Faulty PCM wiringarrow_forwardA typical normal oxygen sensor signal will toggle between and volts.arrow_forward
- Which 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_forwardWhile discussing EGR systems with a differentialpressure feedback electronic (DPFE) sensor: TechnicianA says that the DPFE sensor sends a signal to thePCM in relation to intake manifold pressure. TechnicianB says that the PCM corrects the EGR flow if theactual flow does not match the requested flow. Who iscorrect?a. Technician A onlyb. Technician B onlyc. Both A and Bd. Neither A nor Barrow_forwardExplain the basic concept of Temperature and Pressure Sensor.arrow_forward
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