TM 5-3805-258-24-19 5 0 B O P E R A T O R ’ S S T A T I O NPOSSIBLE PROBLEMSA. ALL indicators ON.E L E C T R I C A L T R O U B L E S H O O T I NGPAGE4-111B. An indicator that must be ON is NOT ON.4-112C. An indicator that must be OFF is ON.4-113D. The master fault light is NOT ON but was ON in TEST I.4-114E. Alternator indicator is OFF.4-114If the indicators are as in the table above, the harnesses and switches arechecked except for the indicators that can be ON or OFF.Activate the brakes several times until the air pressure goes down and thebrake pressure indicator turns ON. This checks the brake pressure switch andthe wiring.Activate the parking brake. If the parking brake indicator turns on, theparking brake switch and wiring are good.Drain the fuel tank to check the low fuel level switch and wiring. Remove thewire from the fuel level switch to check just the wiring. The indicator must turnON with the wire removed.4-110
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