Diagnostics and repair of vehicle electrical systems
Battery problems
*Weak or dead battery
* Damaged terminals or connections
* Generator failure
Lighting problems
* Burnt out light bulbs
*Faulty switches or relays
* Electrical wiring fault
Problems starting the engine
* Faulty starter
* Damaged battery
* Ignition system malfunction
Problems with the charging system
* Faulty generator
* Damaged wires or connections
*Dead battery
Problems with the engine management system
* Faulty sensors
* Damaged wiring harnesses
* Problems with the electronic control unit (ECU)
Problems with the fuel supply system
* Faulty fuel pump
* Clogged fuel filters
* Problems with the electronic engine control unit (ECU)
Problems with the fuel injection system
* Dirty injectors
* Faulty fuel pump
* Problems with the electronic engine control unit (ECU)
Problems with the ignition system
*Burnt spark plugs
* Faulty high voltage wires
* Faulty ignition distributor (in cars with a carburetor engine)
Other electrical problems
* Faulty sound alarm
* Inoperative windows
* Problems with the air conditioning system
Repair process
1. Diagnose the problem using a scanner or visual inspection
2. Eliminate the malfunction by replacing parts, repairing or cleaning
3. Check the system after repair to ensure proper operation
Maintenance Tips
* Check the battery regularly and carry out maintenance
* Replace broken light bulbs and fuses promptly
* Avoid getting moisture into electrical systems
* Clean battery terminals and connections regularly
* Use high-quality spare parts and consumables