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.

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