Exam 11: Electronically Controlled Transmission

Technician A says the Powertrain Control Module (PCM) can reduce transmission wear by torque reduction during gear shifting. Technician B says the PCM monitors gear ratios as a method of fault detection. Which technician is correct?

A more sophisticated type of fault detection is when the (PCM) monitors the input shaft speed sensor and compares it to the VSS to determine ________.

Which of the following is typically the output of a reed switch?

Cold transmission fluid is very thick and the PCM will increase line pressure to compensate.

Technician A says that the input shaft speed sensor is compared to the crankshaft position sensor to determine slippage between the turbine and the impeller. Technician B says that the CKP sensor is used to monitor engagement of the torque converter clutch. Who is correct?

In an electronically controlled automatic transmission, which of the following sensors changes resistance based upon the regulated hydraulic pressure output from the front pump?

Technician A says that as soon as the brake pedal is depressed, the TCC is released to prevent drag and engine stalling. Technician B says that when the brake pedal is depressed, the PCM engages the TCC. Who is correct?

Which of the following Vehicle Speed Sensors (VSS) typically requires a supply of electricity to operate?

Tech A says that transmissions with an input shaft speed sensor and a vehicle speed sensor (VSS) can use this information to determine shift solenoid failure. Tech B says the input shaft speed sensor is also called a turbine speed sensor. Who is correct?

Which of the following is True of throttle pressure?

All the following statements are true except:

Automatic transmission line pressure that is sent to the governor is allowed to be exhausted back to the transmission pan when the vehicle is not moving and the governor is not creating any pressure.

Which of these items is the brain of the electronically controlled automatic transmission?

Manufacturers have found that by using torque management to reduce the amount of torque during shifting, they can _________.

Technician A says on electronically controlled transmissions, the Torque Converter Clutch (TCC) solenoid is monitored by the Powertrain Control Module (PCM) and diagnostic trouble codes can be set when the TCC is not operating correctly. Technician B says on older hydraulically controlled transmissions, the PCM will set codes if the TCC solenoid is physically stuck closed. Who is correct?

Which of the following is used on electronically controlled automatic transmissions in place of the vacuum modulator valve?

Identification of an environment means identifying unusual ambient conditions in which the vehicle is operating.