Tools and materials:
* Multimeter
* Screwdrivers (phillips, flat)
* Wrenches (spanners, adjustable)
* Soldering iron
* Solder
* Electrical tape
* Heat shrink tube
* Terminal pullers
* Dielectric gloves
Precautions:
* Disconnect the battery before starting work.
* Wear safety glasses and gloves.
* The work space should be well lit and ventilated.
* Do not touch electrical components without gloves.
Troubleshooting:
* Check the battery for charge.
* Check the battery terminals for corrosion.
* Check fuses for blown fuses.
* Check the relay for serviceability.
* Check wiring for breaks or shorts.
* Check switching units and sensors.
Repair:
* Repairing broken wires: Cut off the damaged part of the wire and connect the ends using twisting, soldering or a special connector. Insulate the connection with heat shrink tubing or electrical tape.
* Troubleshooting Short Circuits: Find the location of the short circuit by checking the circuit with a multimeter. Correct the short circuit by repairing the damaged wire or replacing the faulty component.
* Replacement of fuses: Find the faulty fuse and replace it with a new one of the same type and rating.
* Relay replacement: Remove the faulty relay from the socket and install a new one. Make sure the pins match.
* Cleaning the battery terminals: Remove the terminals from the battery and clean them with a brush. Reinstall the terminals by tightening them with a wrench or wrench.
Prevention:
* Regularly clean the battery terminals from corrosion.
* Check the wiring for damage or kinks.
* Replace old or worn components.
* Use dielectric grease on electrical connections.
Attention:
*If you are unsure of your skills, consult a professional auto electrician.
* Never work on electrical components with the ignition on.
* Use only spare parts recommended for your vehicle.