Automotive electrical diagnostics
1. Inspection
* Visual inspection of all electrical components, wires and connectors.
* Check for damage, corrosion or loose connections.
* Checking the fluid level in the battery, inspecting the terminals and connections.
2. Voltage testing
* Using a voltmeter to measure the voltage at the terminals of the battery, alternator, starter and other electrical components.
* Checking voltage levels to specifications.
* Troubleshooting the charging or starting system.
3. Resistance testing
*Using an ohmmeter to test the resistance of wires, connectors and other electrical components.
* Detection of breaks, short circuits or increased resistance.
* Checking circuit integrity and identifying faults in insulation.
4. Current testing
* Using an ammeter to measure the current consumed or generated by electrical components.
* Detection of overloads, current leaks or faults in circuits.
* Check the functionality of the charging, starting and other electrical systems.
5. Scanning trouble codes
*Using a trouble code scanner to read and interpret fault codes stored in the electronic control unit (ECU).
* Determine the source of faults and obtain information about which systems or components may be affected.
6. Checking the operation of components
* Manually or automatically turn on and off various electrical components such as headlights, power windows, air conditioning, etc.
* Checking their correct operation and troubleshooting.
* Identify problems with relays, switches, fuses or wiring.
7. Measurement of signal parameters
* Using an oscilloscope to measure and analyze electrical signals in circuits.
* Detection of deviations from required parameters such as frequency, amplitude or waveform.
* diagnosis of problems with sensors, actuators or control systems.
8. Data analysis
* Collection and interpretation of data obtained during diagnostics.
* Determining the causes of malfunctions and developing a repair plan.
* Ensure diagnostic results are documented for future reference.