- do not allow the generator to operate with the battery disconnected;
- do not check the operation of the generator for "spark", since in this case a significant current flows through the diodes, and they fail;
- do not check diodes with a voltage of more than 12 V or with a megger;
- when carrying out electric welding work, disconnect all wires from the generator and from the battery;
- check the components and circuits of electrical equipment and troubleshoot when the engine is not running and the battery is disconnected.
Cause | Elimination Method |
When the ignition is turned on, the battery charging indicator lamp does not light up | |
Break in the wire between the generator, the ignition switch and the control lamp | Check the voltage on the circuit, starting from the generator |
Low battery | Check the voltage and, if necessary, charge the battery |
Bulb burnt out | If this is confirmed, replace the bulb |
The alternator brushes do not fit snugly against the slip rings | Check the length of the brushes and their freedom of movement in the holder |
The excitation winding of the generator burned out | Check the rotor and diodes, which, if defects are found, must be replaced |
Battery Charging Warning Lamp Does Not Go Out When Engine RPM Increases | |
Broken voltage regulator | Replace with a new one |
The wire between the generator and the control lamp has a ground contact | Replace the wiring harness or additionally insulate the wire |
The battery charge warning lamp lights up when the ignition is off | |
Diode short circuit | Check diodes and replace faulty ones |
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