how to fix power locks not working on Honda Civic 10th Generation (2016-2021)

Honda Civic 10th Generation (2016-2021)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

607 words

Problem Statement

Learn how to diagnose and fix power locks not working on Honda Civic 10th Generation (2016-2021). Step-by-step guide with tools and solutions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect negative battery terminal before working on electrical systems.
•Allow the vehicle to cool down if working in the engine compartment.

Symptoms

•Power lock buttons do not respond when pressed
•Key fob fails to lock or unlock the doors
•Lock/unlock indicator lights do not illuminate
•Manual locking works fine
•Possible clicking sound from door actuator when trying to operate locks

Diagnostic Steps

1
Check the key fob battery and replace if necessary.
2
Use an OBD-II scanner to check for any related error codes.
3
Inspect the power lock fuse in the fuse box for any signs of being blown.
4
Verify the operation of the door lock switch by testing continuity with a multimeter.
5
Check wiring connections at the door actuators and inside the door for any damage or corrosion.
6
Test the power lock actuators by supplying direct voltage to them.

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

•OBD-II scanner
•Multimeter
•Screwdrivers
•Socket set
•Wire connectors

Parts Required

•Key fob battery (CR2032)
•Power door lock fuse (as needed)
•Door lock switch (if faulty)
•Power door lock actuator(s) (if faulty)

Related Faults

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Diagnostic Steps

1
Check the key fob battery and replace if necessary.
2
Use an OBD-II scanner to check for any related error codes.
3
Inspect the power lock fuse in the fuse box for any signs of being blown.
4
Verify the operation of the door lock switch by testing continuity with a multimeter.
5
Check wiring connections at the door actuators and inside the door for any damage or corrosion.
6
Test the power lock actuators by supplying direct voltage to them.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, screwdrivers, socket set, wire connectors.
Ensure the vehicle is parked safely with the ignition turned off.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Key Fob Battery

Open the key fob using a flat-head screwdriver.
Remove the old battery and replace it with a new CR2032 battery, ensuring correct polarity.
Reassemble the key fob and test its functionality.

3. Check and Replace Fuse

Locate the fuse box (usually under the dashboard or in the engine compartment).
Identify the power lock fuse using the diagram on the fuse box cover.
Remove the fuse and inspect it for continuity using a multimeter.
If blown, replace it with a fuse of the same amperage (typically 15A).

4. Test Door Lock Switch

Remove the door panel to access the lock switch.
Disconnect the electrical connector from the switch.
Use a multimeter to check for continuity across the switch terminals when pressed.
If no continuity is detected, replace the door lock switch.

5. Inspect Wiring and Connections

Examine wiring harnesses leading to each door actuator for fraying or damage.
Check for corrosion or loose connections at the door junction points.
Repair any damaged wires or replace connectors as necessary.

6. Replace Power Door Lock Actuator

If the actuator fails to operate when direct voltage is applied, it will need replacement.
Remove the door panel to access the actuator.
Disconnect the actuator wiring harness and remove mounting screws.
Install the new actuator by reversing the removal steps and reconnect the wiring.