Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 25, Problem 14RQ
A defective LAT sensor or circuit may cause the fol lowing problems, except.
- hard engine starting
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On an engine management syste with feedback control from an oxygen sensor why may a missing engine thermostat prevent closed loop operation
A digital speedometer constantly reads 0 mph : TechnicianA says that the problem may be the vehiclespeed sensor. Technician B says that the problem maybe the throttle position sensor. Who is correct?a. Technician Ab. Technician Bc. Both A and Bd. Neither A nor B
Because modern engines heat up rapidly heated oxygen sensor (ho2s) are not required.
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Chapter 25 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 25 - OBD II systems use several modes of operation....Ch. 25 - List the four ways that individual components 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 - A typical normal oxygen sensor signal will toggle...Ch. 25 - Prob. 6RQCh. 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 - Which of the following statements about zirconium...
Ch. 25 - Describe the typical procedure for adjusting a TP...Ch. 25 - Why does the rotor for a CKP have one or more...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 least likely cause of a no-start condition? Faulty CKP sensor Faulty KS Fuel or ignition system faults Faulty PCM wiringarrow_forwardTrue or False? On some engines, if the gap between the crankshaft sensor and its trigger wheel is outside specifications, the sensor should be replaced.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_forward
- Which sensor is used for misfire monitoring on OBD II systems? Oxygen sensor Camshaft position sensor Crankshaft position sensor DPFE sensorarrow_forwardTechnician A says that a faulty MAF sensor can cause the engine to run lean. Technician B says that a faulty MAP sensor can cause the engine to not start. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardTrue or False? The ABS lamp turns on whenever the system is actively regulating drive torque and braking force.arrow_forward
- A transmission has delayed upshifts under all operating conditions: Technician A says that low mainline pressure can cause this. Technician B says that a faulty TFT sensor can cause this. Who is correct? a. Technician A only b. Technician B only c. Both A and B d. Neither A nor Barrow_forwardTrue or False? An A/F ratio sensor can be tested in the same way as an oxygen sensor.arrow_forwardA digital speedometer constantly reads 0 mph: Technician A says that the problem may be the vehicle speed sensor. Technician B says that the problem may be the throttle position sensor. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forward
- What is the name for the gas-filled pressure chamber that is part of the antilock braking system's pump and motor assembly? Control module Accumulator Sensor Reservoirarrow_forwardWhich of the following could cause the 4WD indicators not to operate correctly? a. A faulty control module (PCM) b. Inoperative locking hubs C. Worn transfer case clutch d. Damaged transfer case shift leverarrow_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_forward
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