Technician A says electronically controlled transmissions use Electronic Pressure Control (EPC) solenoids to control line pressure. Technician B says when testing EPC solenoids with a digital storage oscilloscope (DSO), the voltage pattern would be a square wave. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because EPC solenoids are used to control line pressure in electronically controlled transmissions. Technician B is also correct because when testing EPC solenoids with a DSO, the voltage pattern typically appears as a square wave.

Technician a Says Electronically Controlled Transmissions Use Electronic Pressure Control