Electrician car troubleshooting
1. Visual inspection and contact inspection
* Check for damage, wear, or corrosion on battery cables, connectors, and terminals.
* Clean and tighten any loose connections.
2. Voltage check
* Use a voltmeter to measure voltage across the battery and individual components such as the alternator, starter and fuses.
* Make sure the voltage is within acceptable limits (usually 12-14 volts).
3. Current check
* Use an ammeter to measure the current drawn by various components.
* Make sure that the current is within acceptable limits and that there is no current leakage.
4. Grounding check
* Check all ground wires to ensure they are intact and securely connected.
* Measure the resistance between the component and ground; it should be below 1 ohm.
5. Checking fuses and relays
* Check all fuses and relays for burnout or malfunction.
* Replace any faulty fuses or relays.
6. Checking the sensors
* Use a scanner or multimeter to check the readings of sensors such as the crankshaft position sensor, vehicle speed sensor and oxygen sensor.
* Make sure the readings are within acceptable limits and correspond to the actual operating conditions.
7. Checking control modules
* Use a scanner to diagnose control modules such as the engine control module (ECU) and body control module (BCM).
*Check for trouble codes and correct any problems found.
8. Computer diagnostics
* Use a diagnostic scanner to read and interpret trouble codes stored in the on-board computer.
*These codes may indicate specific components or system problems.
9. Oscillography
* Use an oscilloscope to monitor electrical signals in various components.
* This may help in detecting hidden or intermittent faults.
10. Consultation with a qualified specialist
*If you are unable to correct the problem yourself, contact a qualified auto electrician.
* They have the necessary equipment and knowledge to carry out more in-depth diagnostics and repairs.