1997 Ford F350 Owner Guide 1st Printing - Page 20

NOTE: If your light truck is equipped with dual fuel tanks, the "CHECK ENGINE" light may come on if fuel is restricted to the engine or if the fuel flow is momentarily disrupted because of an empty fuel tank before you switched to the auxiliary fuel tank. This condition is normal and the light should go off after full fuel flow is restored. Charging System Light This light indicates that your battery is not being charged and that you need to have the electrical system checked. Charging system light This light illuminates every time you turn the ignition to the ON or START position (engine off). The light should go off when the engine starts and the alternator begins to charge. If the light stays on or illuminates when the engine is running, have the electrical system checked as soon as possible. Battery Voltage Gauge (Voltmeter) This gauge shows you the battery voltage when the ignition key is in the ON position. If you are running electrical accessories (when the engine is off, or idling at a low speed), the pointer may move toward the lower end of the normal band. If it stays outside the normal band area, have your vehicle's electrical system checked as soon as it is safely possible. 18