my Honda Accord 9th Generation (2013-2017) headlights flicker while driving

Solution

1. Preparation

• Gather tools and park the vehicle on a flat surface.
• Ensure the engine is off and the keys are removed from the ignition.
• Disconnect the negative battery terminal to prevent any electrical short circuits.

2. Battery Inspection

• Tools Required: Multimeter, wire brush, wrench
• Clean the battery terminals with a wire brush to remove any corrosion.
• Reconnect the terminals securely after cleaning.
• Measure the battery voltage; if below 12.4 volts, consider replacing the battery.

3. Alternator Check

• Tools Required: Multimeter, socket set
• With the engine running, measure the voltage at the battery terminals.
• If the voltage is not within 13.7-14.7 volts, the alternator may need replacement.
• Check the alternator drive belt for tension and wear; replace if necessary.

4. Wiring and Fuse Inspection

• Tools Required: Multimeter, socket set, screwdriver
• Inspect the headlight wiring harness for any frayed wires or loose connections.
• Test the headlight circuit fuses with a multimeter; replace any blown fuses with the correct amperage (typically 10A or 15A).
• If issues are found in the wiring, repair or replace as necessary.

5. Reconnection and Testing

• Reconnect the negative battery terminal securely.
• Start the vehicle and check the headlights for proper operation.
• Perform a visual inspection of the headlights while activating other electrical components to ensure the flickering issue is resolved.