430 Section 4 Computer Control Technology Copyright Goodheart-Willcox Co., Inc. 5. Technician A says a passive automotive sensor is capable of generating its own voltage. Technician B says a passive automotive sensor is not capable of generating its own voltage. Who is right? (A) A only. (B) B only. (C) Both A and B. (D) Neither A nor B. 6. Technician A says that a variable resistance sensor can be tested with an ohmmeter. Technician B says that a variable resistance sensor can be tested with a voltmeter. Who is right? (A) A only. (B) B only. (C) Both A and B. (D) Neither A nor B. 7. Technician A says a reference voltage of about 12 volts is normally required for an automotive variable resistance type sensor to operate prop- erly. Technician B says a reference voltage of about 5 volts is normally required for an automo- tive variable resistance type sensor to operate properly. Who is right? (A) A only. (B) B only. (C) Both A and B. (D) Neither A nor B. 8. A trouble code shows a problem with an active sensor. Technician A says the voltage produced by an active sensor is very low, often under 1 volt. This makes sensor output and wiring har- ness continuity very critical. Technician B says that active sensor signals are just as strong as passive sensor signals. Who is right? (A) A only. (B) B only. (C) Both A and B. (D) Neither A nor B. 9. An automobile’s oxygen sensor output needs to be checked. Technician A uses a digital volt- meter to check this sensor’s output. Technician B uses an analog ohmmeter to check this sensor’s output. Who is right? (A) A only. (B) B only. (C) Both A and B. (D) Neither A nor B. 10. An oxygen sensor tested faulty and must be replaced. Technician A says to use a sealant that is safe for oxygen sensors on the threads. Technician B says to use a sensor socket to prevent sensor damage. Who is right? (A) A only. (B) B only. (C) Both A and B. (D) Neither A nor B.