Electrician car diagnostics
1. Inspection and visual inspection
* Inspect the vehicle for visible damage or signs of corrosion.
* Check the battery, terminals and connections.
* Check fuses and relays.
* Inspect wiring and harnesses for wear or damage.
2. Electrical system check
*Checking Battery Voltage: Make sure the battery voltage is 12.6-12.8V when not running and at least 14.0V when the engine is running.
* Battery Load Test: Use a battery load tester to check the condition of the battery under load.
* Starter Check: Check the starter for power and proper operation.
* Alternator Check: Check the alternator for power and that the battery is properly charged.
* Wiring Check: Use a multimeter to check the wiring for continuity and shorts.
* Grounding Check: Make sure all components are properly grounded.
3. Scanning trouble codes
*Connect the diagnostic scanner to the car.
* Read and interpret trouble codes.
* Reset fault codes after repair.
4. Specialized tests
* Ignition system check: Check the ignition coils, spark plugs and ignition wires.
* Lighting System Check: Check the headlights, taillights, turn signals and hazard lights.
* Checking the power windows: Check the power windows for proper operation and any malfunctions.
*Sound System Check: Check the radio, speakers and sound system wiring.
5. Additional tips
*Refer to your specific vehicle’s repair manual for exact information and instructions.
* Use high quality tools and equipment for diagnosis and repair.
*If you are unsure of your skills, consult a professional auto mechanic.
* Maintain your vehicle’s electrical system regularly to prevent problems.