how to fix Honda Civic 10th Generation (2016-2021) headlights not working

Honda Civic 11th Generation (2022-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

474 words

Problem Statement

Learn how to diagnose and fix headlights not working on Honda Civic 10th Generation (2016-2021). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool down before accessing headlight components.

Symptoms

•Headlights do not illuminate when switched on
•High beams may work while low beams do not
•Dashboard warning lights may be illuminated
•Flickering or intermittent operation of headlights
•No sound from headlight relay when activated

Diagnostic Steps

1
Inspect the headlight bulbs for any signs of burn-out or damage.
2
Check the headlight fuse in the fuse box for continuity.
3
Use a multimeter to test the voltage at the headlight connector.
4
Inspect the headlight switch for proper operation.
5
Check wiring harness for any visible damage or corrosion.
6
Test the headlight relay for functionality.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Socket set
•Pliers
•Multimeter
•Fuse puller
•Screwdriver set

Parts Required

•Headlight bulbs (if needed)
•Fuses (if needed)
•Headlight relay (if needed)

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Diagnostic Steps

1
Inspect the headlight bulbs for any signs of burn-out or damage.
2
Check the headlight fuse in the fuse box for continuity.
3
Use a multimeter to test the voltage at the headlight connector.
4
Inspect the headlight switch for proper operation.
5
Check wiring harness for any visible damage or corrosion.
6
Test the headlight relay for functionality.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Park the vehicle on a flat surface and turn off the ignition.
Disconnect the negative battery terminal to prevent electrical shock.

2. Inspect and Replace Headlight Bulbs

Sub-steps:
1. Open the hood and locate the headlight assembly.
2. Remove the plastic cover (if applicable) to access the bulb.
3. Disconnect the bulb connector by pulling it straight off.
4. Twist the bulb socket counterclockwise and remove the bulb.
5. Install the new bulb (ensure not to touch the glass with bare hands).
6. Reconnect the bulb socket and cover.

3. Check and Replace Headlight Fuse

Sub-steps:
1. Locate the fuse box (usually under the dashboard or in the engine compartment).
2. Identify the headlight fuse using the diagram on the fuse box cover.
3. Remove the fuse using a fuse puller or pliers.
4. Inspect the fuse for continuity; replace if blown (use the same amperage).
5. Reinsert the fuse into the fuse box.

4. Test Headlight Relay

Sub-steps:
1. Locate the headlight relay in the fuse box (check the diagram).
2. Remove the relay and inspect for any damage.
3. Test the relay using a multimeter for continuity.
4. Replace the relay if it is faulty.
5. Reinsert the relay back into its position.

5. Inspect Wiring Harness

Sub-steps:
1. Visually inspect the wiring harness connected to the headlight assembly.
2. Look for any signs of wear, corrosion, or damage.
3. Repair or replace any damaged wiring as needed.

6. Reconnect Battery and Test

Sub-steps:
1. Reconnect the negative battery terminal.
2. Turn on the headlights to verify functionality.

Tools Required:

Socket set
Pliers
Multimeter
Fuse puller
Screwdriver set

Parts Required:

Headlight bulbs (if needed)
Fuses (if needed)
Headlight relay (if needed)

Estimated Repair Time: 1-2 hours

Safety Warnings:

Disconnect the battery before working on electrical systems.
Allow the engine to cool down before accessing headlight components.