Two technicians are discussing EPC solenoids. Technician A says the EPC solenoid is a PWW (pulse width modulated) solenoid and receives a duty cycle signal from the TCM. Technician B says the EPC solenoid is an on/off solenoid that is turned on when the TCM sees the 3-4 upshift. Who is correct?
A) A only
B) B only
C) both A and B
D) neither A nor B

Question

Quizplus · Accepted Answer

The EPC (Electronic Pressure Control) solenoid is a pulse width modulated (PWM) solenoid that receives a duty cycle signal from the Transmission Control Module (TCM) to control hydraulic pressure in the transmission. Technician B's description of an on/off solenoid is incorrect for an EPC solenoid.

Two Technicians Are Discussing EPC Solenoids