Battery charging circuit diagram (1988-92.)
1. Fusible link; 2. Control lamp relay; 3. Control lamp; 4. ENGINE fuse; 5. GAUGE fuse; 6. Charging circuit fuse; 7. Ignition control relay
Battery charging circuit diagram (since 1993)
1. Voltage regulator; 2. Stator; 3. Rotor; 4. Generator; 5. Fuse 7.5 A; 6. Control lamp; 7. Battery
The charging system consists of an alternator, a voltage regulator, a charge control lamp circuit, a battery, a fuse link and connecting wires. When these devices work together, they supply power to such consumers as the ignition system, lighting and signaling devices, a radio receiver, etc. The generator is driven by a belt.
Attention! Generators of 1980-87 are equipped with a built-in voltage regulator, which is mounted on the side of the generator body, access to it is possible without removing the generator.
Attention! The voltage regulator on generators of 1988-92 is mounted on the rectifier inside the generator housing.
Attention! On cars since 1993, the regulator is made integral with the brush holder unit, access to the regulator is provided after removing the generator and the rear cover.
1980-87 vehicles are equipped with an ignition relay that supplies power to the charging and ignition circuit fuses.
1988-92 vehicles are equipped with a relay that illuminates the low battery warning light. 1993 and later vehicles have additional fuses and links that monitor the integrity of various parts of the charging circuit.
The voltage regulator is designed to maintain the generator voltage at a given level. When the voltage at the generator output increases sharply, the regulator prevents current surges and overloads in the power supply circuit.
Periodic maintenance of the charging system is generally not required. However, the alternator drive belt, battery and connecting cables should be inspected periodically.
The charge indicator lamp on the instrument panel lights up when the ignition is turned on and goes out after the engine starts. If the lamp does not go out after the engine starts, then the charging circuit is faulty. Some cars are equipped with a voltmeter. If the voltmeter shows very high or very low voltage, then the charging circuit needs to be checked.
Precautionary measures
When connecting the vehicle's internal circuit wires and external devices, the following precautions should be observed.
When connecting the battery to the generator, always observe the correct polarity.
Before repairing any part of the vehicle with electric welding, disconnect the wires from the generator and from the battery terminal.
It is not allowed to start the engine with the charger connected.
Always disconnect the vehicle's circuit cables from both battery terminals before connecting the charger.
The generator is connected directly to the battery, so if the generator terminals are shorted or overloaded, an arc may form and cause a fire.
Before flushing the engine with a jet of steam, cover the generator with plastic film and secure the film with a rubber bandage.