# Chapter Quiz

This activity contains 10 questions.

The voltage output of a zirconia oxygen sensor when the exhaust stream is lean (excess oxygen) is ________.

 Relatively high (close to 1 volt) About in the middle of the voltage range Relatively low (close to 0 volt) Relatively high (close to 1 volt) or about in the middle of the voltage range, depending on atmospheric pressure

A high O2S voltage could be due to ______________________.

 A rich exhaust A lean exhaust A defective spark plug wire A rich exhaust and a defective spark plug wire

A low O2S voltage could be due to ______________________.

 A rich exhaust A lean exhaust A defective spark plug wire A lean exhaust and a defective spark plug wire

An oxygen sensor is being tested with a digital multimeter (DMM), using the MIN/MAX function. The readings are: minimum = 78 mV; maximum = 932 mV; average = 442 mV. Technician A says that the engine is operating correctly. Technician B says that the oxygen sensor is skewed too rich. Which technician is correct?

 Technician A only Technician B only Both Technicians A and B Neither Technician A nor B

An oxygen sensor is being tested using a digital storage oscilloscope (DSO). A good oxygen sensor should display how many transitions (switches) per second?

 1 to 5 5 to 10 10 to 15 15 to 20

A wide-band oxygen sensor was first used on a Honda in what model year?

 1992 1996 2000 2006

A wide-band oxygen sensor is capable of detecting the air-fuel mixture in the exhaust from ______ (rich) to ______ (lean).

 12:1 to 15:1 13:1 to 16.7:1 10:1 to 23:1 8:1 to 18:1

A wide-band oxygen sensor needs to be heated to what operating temperature?

 600ºF (315ºC) 800ºF (427ºC) 1,400ºF (760ºC) 2,000ºF (1,093ºC)

A wide-band oxygen sensor heater could draw how much current (amperes)?

 0.8 to 2.0 A 2 to 4 A 6 to 8 A 8 to 10 A

A P0133 DTC is being discussed. Technician A says that a defective heater circuit could be the cause. Technician B says that a contaminated sensor could be the cause. Which technician is correct?

 Technician A only Technician B only Both Technicians A and B Neither Technician A nor B