why are the power locks not working on my Honda Accord 9th Generation (2013-2017)

Honda Accord Eleventh Generation (2023-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

529 words

Problem Statement

Learn how to diagnose and fix power locks not working in Honda Accord 9th Generation (2013-2017). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to avoid shocks or shorts.

Symptoms

•Power door locks do not respond when pressing the lock/unlock buttons.
•Key fob fails to lock or unlock the doors.
•Manual lock operation is functional, but electronic operation is not.
•Warning lights may illuminate on the dashboard related to the locking system.
•Interior lock switches are unresponsive.

Diagnostic Steps

1
Check the vehicle battery voltage to ensure it is sufficient.
2
Use an OBD-II scanner to check for any fault codes related to the door lock system.
3
Inspect the key fob battery and replace it if necessary.
4
Test the interior lock switches for functionality using a multimeter.
5
Inspect the wiring harness and connectors at the door for any signs of damage or corrosion.
6
Check the door lock actuator for proper operation by applying direct power to it.

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
•Screwdriver set
•Trim removal tools

Parts Required

•Key fob battery (CR2032)
•Door lock actuator (if needed)
•Interior lock switch (if needed)

Related Faults

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Symptoms

•Power door locks do not respond when pressing the lock/unlock buttons.

•Key fob fails to lock or unlock the doors.

•Manual lock operation is functional, but electronic operation is not.

•Warning lights may illuminate on the dashboard related to the locking system.

•Interior lock switches are unresponsive.

Diagnostic Steps

1
Check the vehicle battery voltage to ensure it is sufficient.
2
Use an OBD-II scanner to check for any fault codes related to the door lock system.
3
Inspect the key fob battery and replace it if necessary.
4
Test the interior lock switches for functionality using a multimeter.
5
Inspect the wiring harness and connectors at the door for any signs of damage or corrosion.
6
Check the door lock actuator for proper operation by applying direct power to it.

Solution

1. Preparation

Gather tools and safety equipment: gloves, safety glasses, multimeter, screwdriver set, and trim removal tools.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Key Fob Battery

Remove the key fob casing with a small flathead screwdriver.
Replace the old battery with a new one (typically a CR2032).
Reassemble the fob and test its functionality.

3. Test and Replace Interior Lock Switches

Remove the door panel using a trim removal tool.
Disconnect the electrical connector from the lock switch.
Use a multimeter to test for continuity; replace the switch if no continuity is detected.
Reconnect the switch and reassemble the door panel.

4. Inspect Door Lock Actuator

Remove the door panel to access the actuator.
Disconnect the actuator's wiring harness.
Apply direct battery power to the actuator terminals (positive and negative) to check if it operates.
If the actuator does not respond, replace it with a new one.

5. Check Wiring and Connectors

Inspect the wiring harness leading to the door for any visible damage or corrosion.
Clean any corroded connectors with electrical contact cleaner.
Repair any damaged wiring with solder and heat shrink tubing as necessary.