Technician a Says a Kickdown Moves a Valve Inside a Transmission

Multiple Choice

Technician A says a kickdown moves a valve inside a transmission when the accelerator is pressed all the way down. Techniican B says the kickdown valve opens a passage, allowing full line pressure to pass the kickdown valve to increase throttle pressure. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B