1996 Ford Windstar Owner's Manual - Page 72

s If the driver fastens the safety belt before the ignition is turned to ON, the chime will not sound and the light will not illuminate. s If the safety belt is buckled while the light is on and the chime is sounding, both the light and the chime turn off. The safety belt warning light Check Engine Warning Light The Powertrain On-Board Diagnostic II (OBD II) system consists of the hardware and software necessary to monitor the operation of the powertrain. The OBD II system is designed to check the function of the vehicle's powertrain control system during normal operation. If an emission problem is detected, the Check Engine Warning Light (in the cluster) is turned on. The check engine warning light Modification or additions to the vehicle may cause incorrect operation of the OBD II system. Additions such as burglar alarms, cellular phones, and CB radios must be carefully installed. Do not install these devices by tapping into or running wires close to powertrain control system wires or components. 70