1997 Oldsmobile Achieva Owner's Manual - Page 122

Low Coolant Warning Light - LOW COOLANT If this light comes on and stays on, the vehicle should promptly be pulled off the road and the coolant level checked. Malfunction Indicator Lamp (Check Engine Light) Your Oldsmobile is equipped with a computer which monitors operation of the fuel, ignition and emission control systems. CHECK ENGINE See "Engine Coolant'' in the Index. If there arevisible signs of steam, see"Engine Overheating" in the Index before opening the hood. Have your vehicle serviced as soon as you can. This system is called OBD I1 (On-Board Diagnostics-Second Generation) and is intended to assure that emissions are at acceptable levels for the life of the vehicle, helping to produce a cleaner environment. (In Canada, OBD I1 is replaced by Enhanced Diagnostics.) The CHECK ENGINE light comes on to indicate that there is a problem and service is required. Malfunctions often will be indicated by the system before any problem is apparent. This may prevent more serious damage to your vehicle. This system is also designed to assist your service technician in correctly diagnosing any malfunction. 2-64