ASE Automatic Transmission/Transaxle 2

Question 1

A vehicle shifts harshly into all gears and has no torque converter clutch (TCC) apply. Which sensor failure is the MOST likely cause?

Accepted Answer

Throttle position sensor (TPS)

Answer

A faulty TPS gives the controller incorrect load data, producing harsh shifts and preventing proper TCC apply.

Question 2

Aerated, foamy automatic transmission fluid on the dipstick most commonly indicates which condition?

Accepted Answer

Overfilled fluid level

Answer

An overfilled level lets the rotating components whip air into the fluid, creating foam.

Question 3

Which component allows the front wheels of a transaxle-equipped vehicle to rotate at different speeds while turning?

Accepted Answer

Differential

Answer

The differential, integrated into the transaxle, lets the drive wheels turn at different speeds during cornering.

Question 4

A torque converter that is locked up (TCC stuck applied) will cause which symptom?

Accepted Answer

Engine stall when coming to a stop

Answer

A stuck-applied TCC mechanically links the engine to the transmission, stalling the engine as the vehicle stops.

Question 5

In a Simpson planetary gear set, what provides the reduction needed for first gear?

Accepted Answer

Holding the rear carrier while the sun gear drives

Answer

In low gear the input drives the sun gear and the rear carrier is held, producing maximum gear reduction.

ASE Practice Test