1. The sensor that must be warmed and functioning before the engine management computer will go to closed loop is the _____. a. O2S b. ECT sensor c. Engine MAP sensor d. BARO sensor 2. The voltage output of a zirconia oxygen sensor when the exhaust stream is lean (excess oxygen) is _____. a. Relatively high (close to 1 volt) b. About in the middle of the voltage range c. Relatively low (close to 0 volt) d. Either a or b,
View complete question » 1. The sensor that must be warmed and functioning before the engine management computer will go to closed loop is the _____. a. O2S b. ECT sensor c. Engine MAP sensor d. BARO sensor 2. The voltage output of a zirconia oxygen sensor when the exhaust stream is lean (excess oxygen) is _____. a. Relatively high (close to 1 volt) b. About in the middle of the voltage range c. Relatively low (close to 0 volt) d. Either a or b, depending on atmospheric pressure 3. An oxygen sensor is being tested using a digital storage oscilloscope (DSO). A good oxygen sensor should display how many switches per second? a. 1 to 5 b. 5 to 10 c. 10 to 15 d. 15 to 20
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