| 摘要 |
PROBLEM TO BE SOLVED: To provide an external diagnostic device which can, while reducing the size, weight or cost, reduce power consumption of the vehicle-mounted power supply, and a vehicle diagnostic method and a motorcycle diagnostic system.SOLUTION: In an external diagnosis device (14), a vehicle diagnosis method and a motorcycle diagnosis system (10), when an IGSW (22) is turned on, power is supplied from a vehicle-mounted power supply (26) to the external diagnosis device (14), and a capacitor (64) provided on the external diagnosis device (14) is charged, and when the IGSW (22) is turned off, the power supply from the vehicle-mounted power supply (26) to the external diagnosis device (14) is stopped, and power is supplied from the capacitor (64) to the external diagnosis device (14). |
