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On a recent heavy rainy day, the car ran poorly after driving on a flooded road, and the check engine light remained on. We received a Yamaha Jog SA36J for repair. Initially, we assumed that the problem was caused by water getting into the electrical system, but the cause was different. Since the check engine light was on, we used Yamaha's Fi tester to diagnose the problem and introduce how to check each sensor with the Fi tester. Tosaka Motors New Car Market Hiroshima Hesaka Store 2-10-2 Tosaka Idejo, Higashi-ku, Hiroshima Tel&Fax: 082-229-0319 Mail: [email protected] Facebook: / hesakamotors #jog #Fi tester