SCION: SRS LIGHT ON DTC B1901/B1906: OPEN FRONT PRETENSIONER CIRCUIT. SUPPLEMENTAL RESTRAINT SYSTEMS. ON SOME MODELS, VEHICLES MAY EXHIBIT A DIAGNOSTIC TROUBLE CODE (DTC) B190 AND /OR B1906. AN UPDATED WIRE HARNESS IS AVAILABLE TO ADDRESS THIS CONDITION. REPLACE FLOOR WIRE HARNESS. *PE