Chapter 12 Electronic Control Systems 307 Copyright by Goodheart-Willcox Co., Inc. 1. All of the following statements about electronic trans- missions are true except: (A) sensors for throttle position and vehicle speed are used in place of the governor and throttle valve. (B) electronic solenoids operate the shift valves. (C) no hydraulic parts are used. (D) holding members are identical to those used in non-electronic versions. 2. Whether a transmission pressure switch is on or off tells the ECM _____. (A) the input shaft speed (B) the output shaft speed (C) what gear is engaged (D) whether any slippage is present 3. Technician A says that the viscosity of the fluid affects transmission operation. Technician B says that all transmission temperature sensors are on-off types. Who is right? (A) A only. (B) B only. (C) Both A and B. (D) Neither A nor B. 4. Which of the following pairs of sensors uses the same type of measuring device? (A) MAP and BARO. (B) Speed and throttle position. (C) MAF and MAP. (D) BARO and O 2. 5. Speed sensors can be installed in all of the following locations on the vehicle except: (A) transmission/transaxle input shaft . (B) engine crankshaft or camshaft . (C) ignition distributor. (D) throttle shaft . 6. Technician A says that the ECM can read alternator charging voltage without using a sensor. Technician B says that the ECM may monitor air conditioner opera- tion. Who is right? (A) A only. (B) B only. (C) Both A and B. (D) Neither A nor B. 7. All of the following statements about governor pressure are true except: (A) the ECM controls the operation of the governor solenoid. (B) a pressure sensor monitors governor solenoid pressure. (C) the solenoid and pressure sensor are installed on the valve body. (D) the shaft -mounted governor is used to control solenoid pressure. 8. All of the following statements about shift solenoids are true except: (A) some solenoids are directly connected to check balls that act as shift valves. (B) some solenoids indirectly move the shift valves. (C) when the solenoid opens a pressure passage, pressure rises. (D) when the shift valve is moved by the solenoid, it performs the same job that it does in a hydraulically operated transmission. 9. Technician A says that shift solenoids are often pulsed (duty cycle) types. Technician B says that pressure regu- lator solenoids must be pulsed types. Who is right? (A) A only. (B) B only. (C) Both A and B. (D) Neither A nor B. 10. Continually Variable Transmissions (CVTs) are being discussed. Technician A says that movement of the drive pulley will always force the driven pulley to move. Technician B says that the driven pulley has a larger diameter apply piston than the drive pulley. Who is right? (A) A only. (B) B only. (C) Both A and B. (D) Neither A nor B. ASE-Type Questions—Chapter 12