1994 Pontiac Firebird Owner's Manual - Page 95

Features and Controls :If this happens, your "ABS INOP' light will come on. See "Anti-Lock Brake System WarningLight" in this part.) [f you must drive a short distance with the voltmeter reading in a warning zone, turn ~ f all your accessories, including your f :omfort control and audio systems. I Voltmeter You can read battery voltage on your voltmeter. If it reads less than 11 volts or more than 16 volts while your engineis running, and it stays there, you may have a problem with theelectrical charging system. Have it checked right away. Driving with the voltmeter reading in a warning zone could drain your battery. If you idle yourengine for a while, the voltmeter reading might move into the yellow zone. If the reading stays in the yellow zone while youare driving, you may have a problem with the electrical charging system. Have it checked. While the voltmeter reads in the yellow zone, your battery may not be able power to certain electrical accessories, like ABS. Malfunction Indicator Lamp (Service Engine Soon Light) A computer monitors operationof your fuel, ignition and emission control systems. This light should come on when the ignition is on, but the enginenot is running, as a check to show you it is working. If it doesnot come on atall, have it fixed right away. it stays on, or If it comes on while you are driving, the computer is indicating that have a you problem. You should take your vehicle in for service soon. ...94