| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicle power source system capable of securing easy driving operation even when drive of an engine is stopped.SOLUTION: A vehicle power source system has a power source control circuit (a travel system ignition relay IG1, non-travel system ignition relay IG2 and an ignition control ECU 21) which: blocks an electric power steering system ECU 12, a wiper ECU 14 and a heating wire defogger ECU 15 from a second power source line L2 when an ignition-off signal is input with a vehicle speed being slower than a predetermined speed; and blocks the wiper ECU 14 and the heating wire defogger ECU 15, which are not related to travel motion, from the second power source line L2 while maintaining an electric connection between the electric power steering system ECU 12 related to the travel motion and the second power source line L2 when the ignition-off signal is input with the vehicle speed being higher than the predetermined speed. |
