Patent ID: 8151815

Claim:
A solenoid valve control apparatus comprising: a solenoid valve having: (a) a first solenoid valve that outputs a first solenoid pressure; (b) a second solenoid valve that outputs a second solenoid pressure, each of the first and second solenoid valves having a solenoid coil that drives a plunger inside the solenoid valve in accordance with an application current, the plunger controlling communication between a solenoid pressure port and a drain port, a pressure regulation valve that works with the first and second solenoid pressures from the solenoid valve being working signal pressures of a spool; and a foreign matter removal control means that removes a foreign matter that adheres to a valve open/close portion of the solenoid valve, by applying a rectangular-wave current which performs a reciprocating movement of the plunger to the solenoid coil, upon execution of a foreign matter removal control, and the foreign matter removal control means being configured so that when applying the rectangular-wave current, which removes the foreign matter, to the solenoid coil of one solenoid valve of the first and second solenoid valves, a current application to the solenoid coil of the other solenoid valve, by which the solenoid pressure becomes a maximum pressure range, is maintained.