Instructions for repairing electrical equipment of cars
1. Security measures
* Always disconnect the battery before starting work.
* Use properly insulated tools.
* Follow safety precautions when handling electricity.
2. Recognition and diagnosis of faults
* Describe the symptoms of the problem, such as failure to start, dimming of headlights, or inoperative windows.
* Check fuses and relays.
* Use a multimeter to check voltages, resistances and continuity.
3. Component repair
Fuses:
* Replace blown fuses with new ones of the same amperage rating.
Relay:
* Check relay coils for voltage and continuity.
* Replace faulty relays.
Wires and connectors:
* Inspect the wires for damage, breaks or poor connections.
* Replace damaged wires and clean dirty connectors.
Switches and switches:
* Check the switch contacts for wear or corrosion.
* Clean or replace faulty switches.
4. Check and adjustment
* After repair, turn on the battery.
* Check the operation of electrical equipment such as headlights, power windows and horn.
* Reset trouble codes if they have been recorded.
5. Documentation and reporting
* Keep a log of all work completed.
* Indicate the date, time, symptoms noticed, actions performed, and results of repairs.
6. Additional tips
* Use the vehicle wiring diagram to identify components.
*Seek professional help if the problem is complex or you can’t find it.
* Maintain your vehicle’s electrical equipment regularly to prevent malfunctions.