Pressure Regulating Solenoid: Testing and Inspection

DESCRIPTION
The electronic pressure control (EPC) solenoid regulates transmission EPC pressure. EPC valve pressure is used to control line pressure and the 2-3 backout valve function.

SYMPTOMS
^ Failed ON- Minimum EPC pressure (minimum capacity), limit engine torque (alternate firing).
^ Failed OFF- Maximum EPC pressure, harsh engagements, harsh shifts.

DTC's
P1746*, P1747*

* Output circuit check, generated only by electrical conditions.