Electric current detection apparatus

An electric current detection apparatus, the electric current detection apparatus being configured to detect an electric current flowing in a solenoid configured to be electrified by a PWM control, the electric current detection apparatus comprising:

• a switch configured to be switched from either one of an open state and a closed state to the other by the PWM control;
• an electric current value detection portion configured to detect a first electric current value, the first electric current value being an electric current value of the electric current at a first timing corresponding to a timing when the switch transitions from the closed state to the open state;
• the electric current value detection portion configured to detect a third electric current value, the third electric current value being an electric current value of the electric current at a third timing, the third timing being a timing when a first time period has passed from a second timing corresponding to a timing at which the switch transitions from the open state to the closed state and which is immediately prior to the first timing, the third timing occurring between the second timing and the first timing, the first time period being set in advance;
• and
• a second electric current value calculation portion configured to calculate a second electric current value on the basis of the first electric current value and the third electric current value, the second electric current value being an electric current value of the electric current at the second timing.