What does it indicate when the charge warning lamp of the generator or alternator stays off while the truck is being driven?

Question

DentroTest · Accepted Answer

The charge control warning lamp of the electrical circuit (usually shown with a battery symbol) works as a fault warning. When the ignition key is turned with the engine off, the lamp comes on to verify that the bulb or diode works. As soon as the engine starts and the generator (alternator) begins to turn, driven by its belt, it starts to generate enough current to power the vehicle's electrical consumers and recharge the battery; at that moment, the warning lamp must go out. Therefore, if it stays off while driving, it confirms that the electrical generation system is working correctly. If it were to light up with the engine running, it would warn of a serious fault in the charging system (broken belt, alternator failure or voltage regulator failure).

What does it indicate when the charge warning lamp of the generator or alternator stays off while the truck is being driven?

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