| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of signal lines that electrically connect inbetween current detection circuits and solenoids. SOLUTION: The current detection circuits 4-1, 4-2 are provided on the high sides for each of the solenoids 1-1, 1-2 between the solenoids 1-1, 1-2 and switches SW-1, SW-2. Ends on each GND side in the solenoids 1-1, 1-2 are common. The number of the signal lines that connect a controller and two of the solenoids 1-1, 1-2 is "2+1=3". Because of this, it is sufficient that the number (number of pins) at terminal sections of a connector 3 also be with"2+1=3" (P1 to P3). The current detection circuits 4-1, 4-2 detect the current that flows into the solenoid 1-1, 1-2 sides. Accordingly, if grounding is incomplete, an excess current flowing into the solenoids 1-1, 1-2 can be detected. COPYRIGHT: (C)2008,JPO&INPIT
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