Diag.Code 15 Open in Front Airbag Sensor Circuit CIRCUIT DESCRIPTION The front airbag sensor detects the deceleration force in a frontal collision and is located in the front fender on the left and right sides. For details of the function of each component, see FUNCTION OF COMPONENTS on page AB-7. Diagnostic code 15 is recorded when an open is detected in the front airbag sensor circuit. NOTICE: The front airbag sensor connector is equipped with an electrical connection check mechanism for the purpose of detecting an open in the front airbag sensor. (See page AB-9) This mechanism is constructed so that when the terminals of the front airbag sensor have been connected (when the connector housing lock is in the locked condition), the connection detection pin on the wire harness side connects with the terminals for diagnosis use on the sensor side. If the connector is not properly connected, the diagnosis system may detect only a malfunction code, even though the airbag system is functioning normally. When connecting the front airbag sensor connector, make sure it is connected properly. If diagnostic code 15 is displayed after the front airbag sensor connector has been connected, check again that it is properly connected. Code No. Diagnosis 15 · Open circuit in +S wire harness or -S wire harness of front airbag sensor. · Front airbag sensor malfunction. · Malfunction of electrical connection check mechanism of front airbag sensor. · Center airbag sensor assembly malfunction.