Automatic Transmission Troubleshooting and Diagnosis, Exams of Advanced Education

Download Automatic Transmission Troubleshooting and Diagnosis and more Exams Advanced Education in PDF only on Docsity! ASE Automatic Transmissions Study Set questions and answers After a long drive red fluid is seen on the transmission case and under the chassis of a vehicle. Technician A says this can be caused by fluid aeration. Technician B says this could be caused by engine overheating. Who is correct? A. Technician A B. Technician B C. Both A and B D. Neither A or B - C. Both A and B The MIL is illuminated and the transmission only operates in third and reverse gears. Which of the following is the MOST likely cause of this condition? A. Adaptive learning. B. High line pressure. C. Low line pressure. D. Limp-in mode. - D. Limp-in mode. Which of the following affects a transmission's shift points in relation to vehicle speed? A. The throttle valve. B. The governor. C. Both of these. D. Neither of these. - B. The governor While testing the TCM of an electronic automatic transmission the technician should use at least a: A. 1 Megohm tester. B. 5 Megohm tester. C. 10 Megohm tester. D. 20 Megohm tester. - C. 10 Megohm tester. An automatic transaxle slips only while turning corners. Which of the following has caused this condition? A. Worn Band B. Torque Converter Clutch C. Low Fluid Level D. Planetary Gearset - C. Low Fluid Level Refer to the chart above. Which gear ratio best represents overdrive? A. 4.027:1 B. 0.852:1 C. 3.064:1 D. None of these. - Answer B is correct. This ratio (0.852:1) represents overdrive A final drive assembly has been replaced. Technician A says to use an inch pound torque wrench to check for proper pinion preload. Technician B says to use a dial indicator to check the ring gear's backlash. Who is correct? A. Technician A An automatic transmission has delayed initial engagement when shifted into drive and reverse. Technician A says a clogged transmission oil filter will result in this condition. Technician B says oil pump starvation causes delayed shift engagement. Who is correct? A. Technician A B. Technician B C. Both A and B D. Neither A or B - C. Both A and B Technician A says a TR sensor (Transmission Range Sensor) can be tested using an ohmmeter. Technician B says an improperly adjusted neutral safety switch can prevent a vehicle from starting. Who is correct? A. Technician A B. Technician B C. Both A and B D. Neither A or B - C. Both A and B Two technicians are removing a transmission's valve body. Technician A says the separator plate blocks off some passages while allowing fluid to flow in others. Technician B says the seat for a ball- type check valve may be located in the separator plate. Who is correct? A. Technician A B. Technician B C. Both A and B D. Neither A or B - C. Both A and B A vehicle lacks power when accelerating from a stop. Technician A says this could be caused by chipped teeth on the pinion gears. Technician B says the torque converter's one-way stator clutch may be slipping. Who is correct? A. Technician A B. Technician B C. Both A and B D. Neither A or B - B. Technician B Which member of the planetary gear set has internal teeth? A. The sun gear. B. The ring gear. C. The pinion gear. D. The spur gear. - B. The ring gear. Two technicians are discussing a vehicle's torque converter. Technician A says if the torque converter's hub has any imperfections it should be replaced. Technician B says the depth of the torque converter into the case should be measured before removal. Who is correct? A. Technician A B. Technician B C. Both A and B D. Neither A or B - B. Technician B Technician A says the MAP sensor is for the engine and has no affect on transmission shift control. Technician B says the MAF sensor provides information about engine load to the TCM (transmission control module) and is important for TCM shift control. Who is correct? A. Technician A B. Technician B C. Both A and B D. Neither A or B - Technician A says the MAP sensor is for the engine and has no affect on transmission shift control. Technician B says the MAF sensor provides information about engine load to the TCM (transmission control module) and is important for TCM shift control. Who is correct? A. Technician A B. Technician B C. Both A and B D. Neither A or B - B. Technician B A vibration occurs while driving a vehicle with an automatic transmission at normal speeds. This vibration does not occur during a stall test. Which of the following is causing this vibration. A. The torque converter. B. The driveshaft. C. Worn crankshaft main bearings. D. The EPC solenoid. - B. The driveshaft. There is a whining noise coming from the front of the transmission that increases with engine speed. This noise is present in all gears including park and neutral. The MOST likely cause of this is the: A. Planetary gear set. There is a whining sound coming from the inside of a three speed transmission that is heard in first and second gear but goes away when the transmission shifts into third gear. This whining sound is MOST likely caused by: A. A worn output shaft bearing. B. A worn extension housing bushing. C. A worn multi-disc clutch. D. A faulty planetary gearset. - D. A faulty planetary gearset. A vehicle with a three speed synchronous automatic transmission has engine flare while shifting from first to second gear in drive. Technician A says this is caused by early application of the intermediate band. Technician B says this is caused by a faulty overrunning clutch. Who is correct? A. Technician A B. Technician B C. Both A and B D. Neither A or B - D. Neither A or B After a recent transmission service a vehicle with an automatic transmission creeps forward when placed in neutral. Technician A says this is normal. Technician B says a worn or misadjusted manual valve will cause this problem. Who is correct? A. Technician A B. Technician B C. Both A and B D. Neither A or B - B. Technician B After draining the transmission fluid, pieces of black material are found in bottom of the transmission's oil pan. Which of these is causing this debris? A. Worn gear teeth. B. A worn bushing. C. A worn clutch. D. This is a normal condition. - C. A worn clutch. A vehicle's automatic transmission is not down shifting correctly. A disconnected vacuum hose is noticed hanging by transmission case. This vacuum hose should be connected to which of the following? A. The Modulator. B. The Throttle Position Sensor. C. The Governor. D. The Vehicle Speed Sensor. - A. The Modulator. Technician A says an internal transmission cooler is cooled by the engine's cooling system. Technician B says if the transmission fluid appears pink and milky, the transmission has been overheated and oxidation has occurred. Who is correct? A. Technician A B. Technician B C. Both A and B D. Neither A or B - A. Technician A Most modern transmissions use computerized electronics to control shift quality and timing. Technician A says EPC (electronic pressure control) regulates line pressure according to engine speed and torque. Technician B says the EPC solenoid is a variable force solenoid. Who is correct? A. Technician A B. Technician B C. Both A and B D. Neither A or B - C. Both A and B Technician A says a transmission fluid temperature sensor is a thermistor. Technician B says a scan tool and an ohmmeter can be used to diagnose a TFT sensor. Who is correct? A. Technician A B. Technician B C. Both A and B D. Neither A or B - C. Both A and B Technician A says the electronic transmission control module uses information from other control modules. The ECT engine coolant temperature sensor's input is used for TCC torque converter clutch control. Technician B says in today's electronic transmission, the governor has been replaced by the TPS or throttle position sensor . Who is correct? A. Technician A B. Technician B C. Both A and B D. Neither A or B - A. Technician A