DTC C1503: TCS/ESC (ESP) Switch Error: General Description
Driver can inhibit the ESC (ESP) control by ESC (ESP) switch. When switch signal sends into the HECU, the ESC (ESP) warning lamp goes "ON" and the ESC (ESP) control is stopped and if the next switch signal is sent again, the ESC (ESP) control is ready. This function is used for sporty driving or vehicle inspection.