| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic control device provided with a casing having sealing performance and capable of determining the deficiency of the sealing performance of the casing. SOLUTION: The electronic control device in which an electronic control circuit substrate is sealed by a casing comprises a temperature sensor for detecting a temperature in the casing, an air pressure sensor for detecting air pressure in the casing, and an arithmetic circuit for outputting the information of the determining deficiency of the sealing performance of the casing by the relationship between the temperature detected by the temperature sensor and the air pressure detected by the air pressure sensor. COPYRIGHT: (C)2008,JPO&INPIT
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